World's Fastest RC Car Challenge

[ssmokey24]

that is so true, and when he says its in the triple digits, i think he's talkin bout price actually...lol


:rolleyes: :rolleyes:

this is what my cars are based on

http://www.rcnitro.com/articles/SuperNitro2.asp
the one hits 100 like nothing :cool: :cool:

[rx78gp03s]

:rolleyes: :rolleyes:

this is what my cars are based on

http://www.rcnitro.com/articles/SuperNitro2.asp
the one hits 100 like nothing :cool: :cool:

and how does that prove that YOUR car does 100?

[InitialVelocity]

:confused:

Even those its based off of the same car. That one had $4000 worth of hop-ups and custom pieces and I bet it was working harder than "like nothing" to get there.

[ssmokey24]

:confused:

Even those its based off of the same car. That one had $4000 worth of hop-ups and custom pieces and I bet it was working harder than "like nothing" to get there.
:rolleyes: :rolleyes: 4000 hop up parts? man i dont know where you get your parts but a couple of pullys, clutch bell, spur ,shocks, i can get that pretty cheap
and rx78gp03s i quess i cant prove it but if you want to come check it out first hand let me know

[guver]

speed is a function of power vs. aerodynamic drag. acceleration is a function of power vs weight. acceleration is important when determining the top speed of an rc car because of space limitations. the car has a small amout of time to accelerate to top speed before it has to turn or stop. with enough space weight has no impact on top speed.

I would agree somewhat, You must add "weight" to the equation of top speed.

[InitialVelocity]

Distance covered per second: approx. 150 feet (a football field every 2 seconds)

Tire revolutions per second: 205

Engine rpm at maximum speed: approx. 31,000 to 32,000

Engine cycles per second: 533

Energy equivalent of 5-lb. car traveling at 101.7mph—510 lb of energy (approx. the impact of a full-power swing of an ax)

Approx. cost: $4,500+

Dollar cost per mph: $75

Dollar cost for every mph over 60mph: $96

Time spent on project from start to finish: approx. 8 months

Hmm, Gee, I dunno. Cost of car $500. Cost of Parts $4000+. Its right there in a highlighted blue box on the first page of your link even.

[ssmokey24]

[QUOTE=InitialVelocity]Hmm, Gee, I dunno. Cost of car $500. Cost of Parts $4000+. Its right there in a highlighted blue box on the first page of your link even.[/QUOTE

you got almost everything right but my engines are hitting 42,000-50,000 rpms thanks to rick at rb mods :D :D

[TimJohnson]

[QUOTE=InitialVelocity]Hmm, Gee, I dunno. Cost of car $500. Cost of Parts $4000+. Its right there in a highlighted blue box on the first page of your link even.[/QUOTE

you got almost everything right but my engines are hitting 42,000-50,000 rpms thanks to rick at rb mods :D :D

that is only on an off load rev, not under load.

[NotWalkinBlind]

One way to prove you're hitting 100+ speeds is to have someone take a photo over the shoulder of the guy with the radar gun as he's clocking your car... have your car and the gun in the same shot.

[nitrohead5300]

Pictures can be rigged too especially with all the photographic editing programs for computers

[InitialVelocity]

What Clutch Bell/Spur are you running?

What are the pulley sizes?

What differentials?

[NotWalkinBlind]

Pictures can be rigged too especially with all the photographic editing programs for computersDidn't think of that... I can see it now... numbers in the radar gun's screen showing 147.83 MPH.
:eek:
"Hey man, whatchoo got in that thing?????!!!" :D

I was thinking he's probably not gonna fake a pic. Good grief, you could fake a vid if you knew what you were doing.

[Tim'sLosi]

Didn't think of that... I can see it now... numbers in the radar gun's screen showing 147.83 MPH.
:eek:
"Hey man, whatchoo got in that thing?????!!!" :D

I was thinking he's probably not gonna fake a pic. Good grief, you could fake a vid if you knew what you were doing.


I sure wish they would run this race and clear out all the BS in this thread...it sure is full of it. A mag with nearly unlimited resources gets a car to do a best of 101 mph and this guy thinks his does it because he had his engine modded! ;)

[ssmokey24]

I sure wish they would run this race and clear out all the BS in this thread...it sure is full of it. A mag with nearly unlimited resources gets a car to do a best of 101 mph and this guy thinks his does it because he had his engine modded! ;)
:rolleyes: :rolleyes:

i shure like how everyone here (hates) :o if u belive it belive it not i dont care but if you think you got some thing and can get to central florida let me know :D :D :D

[Tim'sLosi]

:rolleyes: :rolleyes:

i shure like how everyone here hates.

No, not hate...there are just quite a few experienced modelers here that truly know the physics and engineering it takes to hit three digits and we know cars like yours DO NOT HAVE IT. And they pop up over and over again without a shred of evidence to back them up. You have a couple of nice rides but they are at least $3500 shy of the mark.

[ssmokey24]

No, not hate...there are just quite a few experienced modelers here that truly know the physics and engineering it takes to hit three digits and we know cars like yours DO NOT HAVE IT. And they pop up over and over again without a shred of evidence to back them up. You have a couple of nice rides but they are at least $3500 shy of the mark.

i got more than that in mine right now :D :D so the supernitro on the magazine hits 100+ and my has better stuff than that one and have a stronger engine but just becouse its my it doent hit 100 :rolleyes:

[trailranger]

If you take your car....any of your RC cars and measure its top speed. Then add in 250grams of lead ballast to that car and run it again. There will a noticable decrease in speed. Why....cause the car can not accellerate beyond its resistance. What extra resistance is there? Well at speed there is air resistance, harmonic vibrations, extra wheel drag from extra weight. When it comes down to it. The ligher car has just a lil more available power to go a lil faster and overcome the next level of all resistance on the car.

If you car ends up going faster with extra weight or lead added to it.....power to you or your pine wood derby track....it must be all down hill.

[SquirrelNutz]

you need wight to keep the car stabilized but too much will slow it down.

[InitialVelocity]

Where in Central Florida are you?

[nitrohead5300]

Didn't think of that... I can see it now... numbers in the radar gun's screen showing 147.83 MPH.
:eek:
"Hey man, whatchoo got in that thing?????!!!" :D

I was thinking he's probably not gonna fake a pic. Good grief, you could fake a vid if you knew what you were doing................You can fake just about anything you want to but would it be worth the effort?? My point is unless you are really there holding the radar gun you just don't know if it has not been staged.

[trailranger]

[QUOTE=InitialVelocity]Hmm, Gee, I dunno. Cost of car $500. Cost of Parts $4000+. Its right there in a highlighted blue box on the first page of your link even.[/QUOTE

you got almost everything right but my engines are hitting 42,000-50,000 rpms thanks to rick at rb mods :D :D


Thats right, RB MODS is hosted a race at my track last week. Sucks I don't play with nitro....or 1/8th scale. But I might start soon, college and work keep me away from electric during the week nights. Might I add, my love, insist that my love of the hobby...doens't smell or icky up the house.

[Bart_Banaan]

Next saturday 12 november 2005 there will be a Speedrun in Alkmaar, The Netherland, on an indoor cycletrack (a 200mtr wooden oval ~230yards). I'll be running my LiPo/Brushless powered Tamiya F-1 (F102) there. I've already reached 80mph/h+ (139km/h) in test runs on outdoor tracks, but now the car has been optimized for running on the cycletrack...

The motor is a LMT5300 with Warrior 9918 controller. I'm using two different LiPo's : a Graupner and a Kokam 3200mAh (20C~25C) 3-cell LiPo (11,1Volts) and the gearing is 32pinion/60spur direct drive. I'm aiming at 100Mph+ (>160km/h). We'll take cameras with us for photo's and films, which will be shown on my (Dutch-)website RC-Junkies.com

The car:

http://www.rc-junkies.nl/images/library/F1-12.jpg

http://www.rc-junkies.nl/images/library/F1-15.jpg

http://www.rc-junkies.nl/images/library/F1-16.jpg

http://www.rc-junkies.nl/images/library/F1-17.jpg

http://www.rc-junkies.nl/images/library/F1-22.jpg


A link to the event on coming Saturday 12 november 2005:
http://www.amcc-nh.com/snelheidrace.htm

[rx78gp03s]

wow now this thing looks like a winner

[Neon_Dave]

one question: You think those rear tires are small enough? :p :D

Nice car though. Looks really fast! :eek:

-Dave

[elcid4300]

A man after my own heart! Looks great Bart!! I do have a question for you, isn't that a Kyosho Impress chassis? That is the only chassis I am missing from my RC F1 collection, wish I had bought one back in the day :(

[NotWalkinBlind]

Cool ride... hope it flies for ya. Might wanna tiewrap those wires on the right side of the rear wing to the wing... you wouldn't want them to be rubbin' on that tire at speed... and that could happen just from the air flow at high speeds.

[trailranger]

Well, if you had to one up us all and just have a velodome in your backyard with a F-1 car to run on it. Wish you the best of luck with getting in to the 100+ MPH range.

The closest velodome to my place is 200 miles...and it is ashpalt, not perfectly fitted hard would planks that have been hand sanded to perfecttion. But it would be worth the trip, I could see how well i do with my car and my cycle. On flats with my road bike, I can only touch the 27mph mark for about 3 min before the next hill or gust of wind slows me down. And my TC3 with an 8s Fegiao motor might reach into the 50's. Might I add that the car and me roughly put out the same peak power. 220watts.

My Chirstmas gift suggestion to my love is Bushnell Radar Gun. Who knows she might buy me a cool gift this year and I will gladly use it.

[DOahh]

Sorry if this has already been asked but Spekyrum? Allowed or not?

[revom26]

why is a 100mph monster so out of reach, my revo does 50mph with one motor, and stock gearing.

[Bart_Banaan]

Airdrag/handling/control are all working against you @ high speeds....

[InitialVelocity]

A Monster truck gets very hairy at even 60+. I think the record, get me wrong, but there was a 70 MPH E-maxx. That was near the limits of what things can do.

[FreeRideJunkie]

Sorry if this has already been asked but Spekyrum? Allowed or not?


why wouldn't spektrum be allowed?? Radio has nothing to do with speed. Just range. No one cares how far away you get...

[PeterV]

The rules were written before 2.4GHz tech became available, that's the only reason it's not mentioned. You WILL be allowed to use Spektrum and Nomadio systems, as long as you can demonstrate a functioning failsafe capability.

[myndseye]

oops, wrong place

[mgs9]

Um just curious but, does my mx-3s have a fail safe?

[dave mac]

is their a limit to the car size????????????

[Craps]

is their a limit to the car size????????????

Dave
Here is all the info and rules here: http://www.rccaraction.com/news/car_challenge.asp

[dave mac]

thanks craps. and goodluck, hope you dont miss to much off roading, with this stuff.

[Craps]

I just got my Prototype Schulze 80.200 ESC from Germany with the Prototype motor Plettenberg sent me and I am ready to hook them to my 4 Thunder Power TP8000-5S4Ps in series to give me 74 volts. Can't wait to test it!!! :D

[one]

If I drag it behind my Vette does it still count? :D I'm thinking somewhere in the 140's :D

[crazyspeeder13]

that would be worth my time to watch.....as the wheels disentigrate (sp?), bumps send it airborn, and then the remainder of the car is ground away:)

[ZoneOfTheEnders]

lmfao thats a lotta battery for a car!

[apollo]

"overkill" is not in my book.......that sounds sweet:)........but costly:(

[ofnaravager9]

i hava megatech dragster!!! up to 97!!!!!!!!!!!!!!!!!!!!!!!!!

[ofnaravager9]

do you guys think a monster truck could win? not that im going to enter but it would be cool to see a monster truck. :cool:

lol

if u dropped it off of a HUGE cliff lol

[trailranger]

Slot Car Drag strip take-off ?....I thinking 80feet of plyboard with a guiding slot cut into it with braided wires. Juice that track with a few car batteries and it should have enough amps and steady volts to get a car into the 75mph range after 80 feet. After the track tapers into the concrete and the wires run out your batteries take over. If the speed runs on the salt flats allow cars to be pushed by 400hp desiel trucks up to 80mph, why not use use a few car batteries to help push your car before it attempts 100mph range. Any Ideas for using a powered sled similar to aircraft carriers. Of course not steam powered...but with good ole 12 volt batteries.

[Chase023]

Don't tell me your going to use the new Plettenberg Predator?

http://www.plettenberg-motoren.com/Motoren/Predator.gif
http://www.icare-rc.com/photos/predator.jpg

This motor is Huge, but it is for Airplanes tho it puts out 11k+ watts :eek: :eek:

[ZoneOfTheEnders]

thats freaking big

[Craps]

Not big enough!!! :D

[Chase023]

Not big enough?? LOL You funny!! heh

http://www.plettenberg-motoren.com/Yak/Yak2.jpg

IT goes in one of these large scale planes
http://www.plettenberg-motoren.com/Yak/Yak1.jpg

[ofnaravager9]

holy crap thats huge!

[Craps]

My motor is biggggggerrrr!!!!

[ofnaravager9]

lol they should make them bigger!

[Chase023]

Go Take a Pic!!

Lemme see your bigger motor and 80.200 schulze :D

[Craps]

Go Take a Pic!!

Lemme see your bigger motor and 80.200 schulze :D

Camera is broken and will not be repaired till July 30th of this year! :D

[Chase023]

Bastard!!! heh :p

[ofnaravager9]

Bastard!!! heh :p

lol i should just sell him my camera!!! ;)
ive been tryin to sell it for weeks...

-luke

[Craps]

lol i should just sell him my camera!!! ;)
ive been tryin to sell it for weeks...

-luke

No money! Spent it all on an RC car for some contest! LOL :D

[ofnaravager9]

lol wat contest????

btw its a digi rebel!!! amazing pics with it!

-luke

ps u want it free?

[jak785]

Does this speed record only pertain to nitro r/c cars, or can a r/c car with a jet engine on it claim the title? Are there rules posted anywhere like max distance you can use to get to speed, cuz I got a jet engine, and I'm going to stick it on a r/c car, and I garente it will be over 111mph.
-jason

[apollo]

im pretty sure it pertains to nitro and electric, not jet powered

[Smib]

I just read through this entire thread. My brain melted pages ago so I don't even remember much of it, but this sounds awesome.

I know rocket engines aren't supposed to be allowed, but what about this?
A multi-stage rocket into a turbine that has an emergency disconnect and some kind of godly braking? Give it a rolling start, or maybe a CO2 canister for a startoff so as not to waste rocket power and you have a very fast vehicle.

I would like to see someone make an off road F-1 car out of an MT. It cernantly wouldn't win any speed records, but it would look neat.

[mook]

you cant used thrust powered. Wheels must be driven.

you could use a heli turbine, but would need to delimit it to get good speed

[jak785]

Its not that hard to get brakes on the car to lock up with a good braking system. The problem would be keeping the car from sliding on the ground due to the lack of weight overcoming the coefficent of friction between the tires and ground. A turboshaft like you said would qualify, and If anyone owns one, it wouldn't be that hard to beat the record. I know a guy in the UK who has the same engine as I do, but converted it from thrust into a turboshaft, and it puts out 9.7hp at full throttle in his airplane, yet the engine only weighs 3lbs.

[NitroDad]

I'm ready to see some HI-SPEED crashes!!! I hope you all take you camcorders. :D

[mook]

Its not that hard to get brakes on the car to lock up with a good braking system. The problem would be keeping the car from sliding on the ground due to the lack of weight overcoming the coefficent of friction between the tires and ground. A turboshaft like you said would qualify, and If anyone owns one, it wouldn't be that hard to beat the record. I know a guy in the UK who has the same engine as I do, but converted it from thrust into a turboshaft, and it puts out 9.7hp at full throttle in his airplane, yet the engine only weighs 3lbs.

they turn over with silly rpm's as well

reckon a turbine driven car would perform well

just the $$$$

[jak785]

Yeah, they do turn at high rpm.. My engine is set at max rpm of 122,000 rpm with a thrust of 23.4lbs. Thats a mind boggling 2,033 revs per second.
About the price. Well actualy, depending on which way you go, they are not that expensive. If I remeber correctly from when reading through all the past 23 pages of posts, some of you are putting 1,000-3,000 bucks worth of parts into your cars, and I'm sure a few have spent much more than that.
I personly built my engine from bar stock on a lathe and mill, and only had to buy the compressor, turbine, and bearings. It only cost me a total of $560 to make a running engine. Now if you don't have the machines available to make an engine yourself, than you can buy one which produces the same amount of thrust as mine for only $1,300 ready to run. Then all you need is a car frame which isn't that expensive. And weight isn't too much of a worry with the amount of power you got comeing out the back of that engine.
Now if you want to go with a turboshaft to drive those wheels, than your going to be forking out $2,500 dollars out of your pocket for a 3.3lb engine producing appox. 8.7hp. (very nice power/weight ratio compared to gas engines)
How much hp does yalls high speed 80-90mph nitro engines put out? Compare that to 8.7hp, and compare proably around a total of 3,000 dollars for a running turboshaft rc car to what you can get in nitro for the same amount. And I personaly think it would be much more fun to drive a r/c jet car than a nitro/eletric car.

P.S. I'm not putting down nitro or electric cars, as everyone has a diffrent taste for what they like. My bro has a nitro car, and it is a blast to play with. I'm just talking about the possabilty of putting a turbojet or turboshaft engine on a r/c car. So please don't give me hate saying I'm putting down nitro/electric cars, as I'm not.
-Jason

[trailranger]

So have you thought about driving that turbin with NOS and rubber or asphalt? It seems to be the choice fuel combo for hybird rockets, so why not use it to spin those wheels.

The idea is simple, flow Nitrous Oxide over the rubber or asphalt and ignite it. Those hot gases should get to reving.

[rx78gp03s]

just curious, why doesn't anyone build a steam powered r/c car? I mean like using the pressure from steam to power/drive teh axles? muich like a steam locomotive. The amount of power that can be generate/rpm if done right can be mind boggling. with that in mind, why don you use the turbine engines in the same manner, except use the exaust.

[jak785]

Thats what we were talking about before. A turboshaft engine is a jet engine using the exhaust to drive a free rotating turbine connected to the wheels through a gearbox. They can put out a lot of hp for a little weight.

[griz11]

Ive seen .21 powered dragsters hit 94.6 mph in 132 ft. An electric 20 cell with a 6 magnet neo motor went 98.8 mph in 132 ft last year at the World Finals. I saw a 90.9 mph run a couple of weeks ago. So 100 mph should be easy with a longer track to build up speed. I would think 150 or more would be something to shoot for.

Griz

[Combatcm]

I would think 150 or more would be something to shoot for.

Griz

Look for cars named "Bearing Seizer"

[trailranger]

Thats what we were talking about before. A turboshaft engine is a jet engine using the exhaust to drive a free rotating turbine connected to the wheels through a gearbox. They can put out a lot of hp for a little weight.
noticed i said, "that turbin" I was following the thread. But anyways, have you tried the Nitous? It also burns well with keosene, if you have a way to regulate flow. I've seen pulse detonation engines use a small pressureized bottle filled liquid fuel and tapped at the bottom. Add about 300 PSI of N2 or H, to the tank and regualte it into the combustion chamber. The almost inert gas forces the fuel out the bottom.

[mook]

what do you reckon the winning top speed will be in this competition.For sure no one has a crystal ball... but in what area do think the winning speed will be in?

[jonnycash]

just curious, why doesn't anyone build a steam powered r/c car? I mean like using the pressure from steam to power/drive teh axles? muich like a steam locomotive. The amount of power that can be generate/rpm if done right can be mind boggling. with that in mind, why don you use the turbine engines in the same manner, except use the exaust.

I'm not sure if this is true in small model engines, but you need a liscence to operate a steam engine. They can turn into a bomb if not properly used.

[Combatcm]

Fastest speed is going to be 143.5 mph

Make sure somebody upload vids an hour after they get home from it.

[GordonFreeman]

Can I use a fan to create ground "suction" under the vehicle?

This is a drag race now right?

[Craps]

Been testing on an 1/8th mile dragstrip with VHT sprayed on it. You can't even walk across the track without your shoes sticking to it. Just about walk out of your shoes if not careful. Traction and bite are not going to be a problem if the track is treated with VHT.

[mook]

would the VHT effect the top speed at all?

[apollo]

it would proabaly cause excessive drag if its as sticky as Craps says

[Craps]

It is stickest from the launch pad and gets less sticky down the run due the amount of rubber laid down. Might be like flies on fly paper! LOL

[NotWalkinBlind]

Fly paper... yeah! Can't you just see a car laboring to get outta there with the clutch taking all kinds of abuse? :D

Couldn't you position your car over to one side for the start? Isn't the treatment concentrated in the center where the full size cars' slicks are?

[party_wagon]

Has anyone even considered building a chasis that will support the running hardware for a good fast racing go cart? They can push 100+ mph w/ an extra 120 pounds in them. I'm sure you could shrink one down to 40 inches in length and re gear it to drive untill you blister tires designed to withstand much more stress then r/c car tires.

[IBJAMMIN]

Why not use a go kart frame? 125 cc shifter kart with a air shifter and 12v motors for steering and brakes there is no limit on weight? just has to be under 40in? cut the frame down to fit 40in gear it up to run 200+ maybe a 6 speed wr 450 motor wow the posabilities?

[Craps]

Interesting!

I think you would have alot of servo problems and maybe radio/reciever problems with an high output ignition system on those motors. Shifter motors would be hard and expensive to get right to! 40" gets real small trying to fit a pipe and motor w/carbs and filters...then you have to have something that resembles a cockpit???

Too big for such a small size restriction!

[fasterthanspeed]

It would be hard to control a car that is the same length as it is wide. You could just use 1/5 scaes servos to control the vehicle. The only other thing is the price would be so great, because just for a decent gokart would be about 10000 dollars. Thats not including everything you would have to get after the gokart. If I had the money I would run a hayabusa engine with turbo and nitrous on a custom chassis. But I dont so my cars is going to be simpler.Just rc car motors.

[IBJAMMIN]

After seeing some of these turbo prop motors and other ideas on here the cost would not be that high you can pick up a good used sprint kart for around 1000 dollars with a yamaha 100cc motor and starter n spares I use to run a lay down road race kart with a 100cc motor top speed was about a 100mph down the staight with my lard ass in it. 1/5 scale servo's wont work you would have to use micro switches and relays to run 12v gear reduced motors there cheap though you can find them in junk yards in power seats and power doors on cars. as far as handling it only has to go straight?

[fasterthanspeed]

When it is shorter it is harder to keep straight. That is why top fuelers are so long. What do turbo props have to do with this conversation?Why wont 1/5 servos work?And youll also have a hard time keeping the karton the ground at thos speeds.

[griz11]

I was told about a machine that is supposed to run this summer at one of the dry lakes. Its powered by a Apollo era F1 rocket engine and is designed to break the speed of sound in 1/4 mile. The thing produces over 17g's so a human can't pilot it. All done by R/C. If this puppy runs its numbers the contest will be a moot point :) But its not driving the axles so I guess it wouldn't count. But I'd sure pay to see it run.

Griz

[IBJAMMIN]

Well fasterthanspeed 1st off a sprint kart to start with is wider at its rear wheels then it's wheel base and they are probably the best handling vehicle you can get on a short track so I dought handling will be a problem 2nd a top fuel car is long to keep it from fliping over backwards not keep it going straight a rail does not have a body for downforce like a short wheelbase funny car? 3rd I was using the turbo prop motor as a price comparison? 4th 5th scale servo's would not be strong enough to turn a kart or push a brake pedal? 5th keeping a 120lb kart on the ground is much easier then a 7lb rc car at high speed?

looking at the spec's on a sprint kart the wheel base is 40in to start with so it would only have to be shortened about 10 or 12in the chassis is 25in wide in the back so you can move the rear wheels in a good 16 to 20in. the motor can be mounted where the seat normally would be to keep the weight bias in check? :)

Griz there was a guy about 25 years ago that put a small liquid fuel rocket in a kart and did exibition runs at the drag races he was in the 150mph range in the quarter mile. :)

[Craps]

You would have to custom build a chassis on a jig moving everything in like that and there is no way to keep a motor with carbs/filter and pipes with in 40" without something custom made like the pipe being custom made into 90 degree bend. What about clutches and gearing for that thing? The time you moved the wheelbase in you would not have much of body in front of and behind the wheels/tires that would close the wheelbase up real short that would make it not be practical because the more body to the front and rear of the wheels/tires the closer the wheelbase. You are going to have less that 12" between the front and rear tires by the time you put a body on it.

It is going to take a very powerful servo to turn that 100lb car and nobody has said anything about the ignition system affects on the radio/reciever. The Yamaha and most kart motors have alot higher output ignition than those weed eater motors they use on 1/4 scale cars with most 1/4 scale cars only needing at the most 400 feet. The 1/4 mile is 1,320 feet plus that distance again for shut down that totals over 2,600 feet of range if that length of track can be used. Even the Spektrum has a 3,000 feet range and who knows if the 2.4 ghz Spektrum system will work with those high output ignition systems on kart motors?

Interesting idea with alot of bugs to work out!

[Wjco5681]

Noone is going to build such a cart anyhow. But lets go ahead and "what if" it to death!!!!

[NotWalkinBlind]

Indeed :D :D :D

[Craps]

Noone is going to build such a cart anyhow. But lets go ahead and "what if" it to death!!!!

Noone...Who is Noone? Does he have pictures?

[IBJAMMIN]

I dont think radio interference will be a problem with the ignition system I just fired up my cr500 and held my rc18 up to the motor and the ignition system and not one glitch as far as distance I have run rc cars in the sand dunes and dry lake alot farther then a 1/4 mile. with clutches and gearing there are alot of options out there from motor clutches to axel clutches. the steering and brake servo's are no problem with a 12volt reversible motor out of a power window or power seat in a car?

IMO the fastest car is probably going to be a 1/8 scale on road car with a brushless lipo set up in it if they can keep the tires from exploding? all I'm trying to say is there are other options out there besides rc car based chassis and motors the kart running gear wheels tires and axel are going to hold up to high speed much better then rc based gear?

I work in the movie biz and have learned nothing is imposible I have seen full size cars rigged to run by remote control? so a kart would be very easy to rig my only problem is I'm going to be out of town for the next 6 weeks on a show and wont have the time to build it if they run it next year I will definetly be there with a kart based car ready to prove the what for and it cant work people wrong.?

[IBJAMMIN]

To bad they wont let thrust powered vehicles run I built this car around 15 years ago to run on the dry lake it's powered by a ducted fan out of a rc jet I had a afterburner set up on it and in testing tripled the thrust but had a melt down in static testing :( with just the fan and no afterburner this car has ran 84 mph on the dry lake with the afterburner or modern jet it should be able to run over 150mph :)

[party_wagon]

If you are having trouble with tires expanding too much then use a concept similar to that of monster truck racers. They take packing tape and turn the tire inside out and make a ring around it to prevent the tires from expanding into cooky cutters. If the right insert is made I believe that CA could keep the tires from exploding. Remeber they explode because they rip off of the side walls of the tire. Reduce the psi by about 1000% by gluing the middle of these tires down and this shouldn't be a problem as long as you keep the parts of the car out of the way of the big spinning tires. Perhaps if your adventurous enough you could run cart tires on an 1/8th mt w/ a brushless system. A good 15 volt lipo w/ the right bl will give you more power and speed then a nova 528 for about 10 minutes of run time. Now, lets go up that voltage to around 75 volts and watch how fast it goes. There are conversions to run bls in 1/8th scales on the market already. Now I'm sure a faster bl system that can operate on 75 volts and dump 8000 mah in around 15 seconds would be able to blister the track as well. Remeber an mt would give you enough room to drop a gigantic power plant and tons of cells. I'm sure you could fit 6+ 8k mah 15 volt lipos in there w/ no problems at all. You could also go for a more aggresive aproach in which you could possible be running 2k mah or so packs for the fast burst. If you could find a system that can handle 300 volts I'm sure its possible.

[IBJAMMIN]

Well I was doing some research to see what is out there kart wise and found this its a kids kart with a wheel base of 30in and 5in tires thats 35in OD from the back tire to the front tire with a live axel you can mount just about any motor to it very easy electric or gas it's 1800.00 RTR lol with a 50cc motor.

To get into the 150mph plus range I think this would be a great platform to start with? :D

[IBJAMMIN]

I know this has nothing to do with the rc speed chalenge but I found this pic while researching karts in the early 70's this guy built a rocket kart that ran the quarter mile in 6 seconds at 215mph WOW talk about balls must have been one hell of a ride he later up the speed to 253mph. :D

Take a look at the wings in front of the rear tires something to think about to help keep your car on the ground at high speed???

[Craps]

Well I was doing some research to see what is out there kart wise and found this its a kids kart with a wheel base of 30in and 5in tires thats 35in OD from the back tire to the front tire with a live axel you can mount just about any motor to it very easy electric or gas it's 1800.00 RTR lol with a 50cc motor.

To get into the 150mph plus range I think this would be a great platform to start with? :D

30 in wheelbase with 5 in wheels will give you 35 in from back of wheel rim on the rear to front of wheel rim on the front then add for the thickness of the rubber tire sidewall front and rear will give you over 40 inches. The front and rear frame rails go beyond this making it too big. Need to do alot of chopping and rewelding to make this work.

[apollo]

I know this has nothing to do with the rc speed chalenge but I found this pic while researching karts in the early 70's this guy built a rocket kart that ran the quarter mile in 6 seconds at 215mph WOW talk about balls must have been one hell of a ride he later up the speed to 253mph. :D

Take a look at the wings in front of the rear tires something to think about to help keep your car on the ground at high speed???

i beleive that guy was using a hydrogen peroxide chemical reaction engine if memory serves me correct, it worked on the principle that pure hydrogen peroxide reacts extremely violently with fine silver screen so he somehow contained this reacion and used it in his kart, i also think he died in one of those things, heard something about spinng the tires til 200 then crashing into a wall :eek:

[46u]

This is all very interesting but don’t they have a form some where for go karts as I thought this was and RC form?

[Grant Tokumi]

The event is coming up very soon. Good luck to all the contestants! I can't wait to see some pictures, video and results.

[TRXrevoRacerOS18]

i beleive that guy was using a hydrogen peroxide chemical reaction engine if memory serves me correct, it worked on the principle that pure hydrogen peroxide reacts extremely violently with fine silver screen so he somehow contained this reacion and used it in his kart, i also think he died in one of those things, heard something about spinng the tires til 200 then crashing into a wall :eek:
death in your own machine, thats bad advertisement lol, that must be sick, spinning your tires at 200 miles an hour!

[IBJAMMIN]

Well it's kinda hard to spin the wheels with a thrust powered vehicle? I think he died in a full size dragster in the 80's? not in the rocket kart. :)

[apollo]

i actually didnt specify how he put power to the ground, i think it might have been a jet turbine like a tank uses, directly drives the wheels, but im nto for sure, it was a long time ago when i actually knew about it

[DJ1978]

Here is one a guy posted on another site.

http://www.hobbytalk.com/bbs1/showthread.php?t=151756

[Craps]

Here is one a guy posted on another site.

http://www.hobbytalk.com/bbs1/showthread.php?t=151756

The same one that is posted on this site.

[mrpags]

I just heard of this contest a couple of days ago, I will be there, 6-1/2 lb car 10-12s LiPo, Custom Brushless 6 turn motor, 3.1HP @101,000 RPM. I have done 80MPH w/ this setup on only 4s LiPo and the car was setup for acceleration not top end. Sorry won't tell what type of chassis. If a radio control boat can do 140+ MPH we should be at the 200mph mark on land, speed on water is so much harder than on land and we're not even close to the big time boat guys. They have a straight away record trials every year, this is something that should be sanctioned and done by one of the Mags (uh hum...Car Action) every year in different locations around the country.

[Breaker 1-9]

I just heard of this contest a couple of days ago, I will be there, 6-1/2 lb car 10-12s LiPo, Custom Brushless 6 turn motor, 3.1HP @101,000 RPM. I have done 80MPH w/ this setup on only 4s LiPo and the car was setup for acceleration not top end. Sorry won't tell what type of chassis. If a radio control boat can do 140+ MPH we should be at the 200mph mark on land, speed on water is so much harder than on land and we're not even close to the big time boat guys. They have a straight away record trials every year, this is something that should be sanctioned and done by one of the Mags (uh hum...Car Action) every year in different locations around the country.




Well best of luck to you and i support anyone thats running electric as i'm no big fan of nitro and have been in the hobby since the 6th grade and till now have not owned a single nitro. But to be honest with you, i really don't think your car is gonna come close to what the member "Craps" is running, i believe his car or maybe should i say "R/C Go-Cart" topped the speeds at a 112 MPH with a top speed of 150 MPH if memory serves my correct from reading a few posts about it. I just wish i could be there for this competition, but sadly like all major events like this, i can't make it due to myself being on a rock in the middle of the sea LOL














Dustin

[Craps]

Dustin
Believe it or not, I am a hard core Electric off road racer that has promoted a class we call Pro Truck using brushless motors and 8000 mah li-po batteries with a 20 minute main.

I don't have as much fun racing the traditional "diesel Nitro" RC cars with the glow plug and ignitor. My GAS car has a spark plug and ignition, is simple to tune and will practically idle all day long.

If the contest had stayed 28" long max, I would have built an electric car with li-pos and brushless. With the 40" long max rule, I wanted the biggest tire I could find that could take the speeds and with that it got heavier and needed more motor than an electric could provide for my budget.

[mrpags]

My theoretical top speed, (using 10s LiPo) calculating rollout with the rpm at 101,000 is 198mph, now i know that i am not going to get near that speed with parasitic and aerodynamic drag, but if i take away 35% for the drag coeficeients (I am just guestimating on that, I was 14% off on my 4s setup) i can concievably reach 130mph and i still have more room to go with my 12s, (hoping the car stays in one piece) that would shatter the existing record of 111mph, by 20mph, and since this is a currently available radio control vehicle, slightly.....modified, that anyone can purchase and not a modified Kart, I would be pretty happy w/ myself. I am also a hardcore racer, Electric, Nitro, Offroad, onroad, you name it, i've raced it and i feel electric is the way to go for top speed. I now have been running electric boats for the past 2 years and have applied some of the brushless LiPo stuff I've learned to some of these cars and the things they are capable of are astounding. The current crop of electric cars are not capable of handeling the horsepower of the Lipo brushless combos, so Chris Fine at Finedesignrc.com has been converting gas cars, trucks buggies and truggies to brushless lipo setups and they are nothing short of amazing, i can get my Lipo brushless powered Mugen MBX-5 prospec up to 60mph in just a click over 3 seconds, and run full bore on a racetrack for 8-9 minutes on a 4s 3700mah pack. I can put a 7500mah pack in there w/ very little difference in performance and run for 15 plus minutes, the pack can be changed in about 10-15 seconds so i can run a full hour long main w/ only 4 pitstops, right along w/ he nitro guys. Sorry to make this post so long. I only wish I had heard about this contest a month or 2 ago so i could really be prepared, I'm only going to have one day of practice, as i'm on vacation right now and wont be home till next thursday. By the way anyone know what the closest airport to the track is??? thanks.

[Craps]

Wow! :eek: I hope he tests it over 100 mph before the calculator batteries wear out and he buys airplane tickets! :D :D :D

On paper and on the race track are 2 different things. ;)

[mrpags]

LOL..... yes i should get a test or 2 in before i fly out there.....but i'll have a blast either way........break a record or crash and burn.......or make a fool of myself.......who cares we'll be racing!!!!!!!!!!!!!!!

[Breaker 1-9]

If i had the money to dish out, I would most defiantly buy a car like Craps from Craps. It's one of the most abnormal R/C's i've seen or that one would probably ever see racing with normal like racecars at a race track. I mean the thing is a R/C go-kart pretty much, a REALLY fast one for the matter. Seeing that thing next to a regular R/C car there at the race would be pretty interesting.














Dustin

[mrpags]

just curious craps, that thing looks like it will handle pretty well too, have you run it on any type of go kart or race track???? looks prety sick, have you tested at 150mph? can't wait to see it in person, see you next week. if all goes well.

[fasterthanspeed]

I am just letting everyone know its really hot in Southern California. Right now its 105 degrees f. in the shade.

[fasterthanspeed]

Were having wierd weather in California. Yesterday it was blazing hot outside, now its raining.

[GordonFreeman]

If you don't like the weather in Wisconsin, just wait five minutes.

[SN VipeR]

i can get my Lipo brushless powered Mugen MBX-5 prospec up to 60mph in just a click over 3 seconds..

I demand pictures! :eek:

[griz11]

Keep your eyes peeled for the Rainman's entry. Its a unique body style for sure. Should be easy to pick out. Jim Schauer will be hard to beat.

Griz

[rainmantoo]

Guess I've been "outed" so to speak. Thanks for your support Griz! I think if Craps doesn't "roll" craps he'll be a tough one to beat. Sure will be a lot of fun to find who truely is the fastest. Here is a picture of my car sitting on an ice chest full of bottled water just in case we need it tomorrow. Can't get a good side view due to the 1000 pxl x 1000pxl size limit. See everyone manana, Jim Schauer

[griz11]

Yea that car looks like a winner to me. One thing for sure dragster drivers go fast every weekend. Some of the other guys might freak out when they get over 80 ;) Those are some tall tires. I'm sure you have enough motor to turn em so you should be hauling tomorrow. Good luck !!!

Griz

[Craps]

Was out at the track today while the "Battle of the Imports" was being run that made me feel like I was in the "Fast and the Furious" movie and noticed there is no electric out there that I seen. You guys may want to bring a generator or power inverter for electricity.

[mrpags]

Unfortunately due to a death in my family i will not be attending tomorrow, I am sorry i will miss all the fun, go out and break some records, maybe next year guys.

[Dan Chase]

Nice Car, Rainman! I can't wait to hear how the day went! See you at the drags!

[southwesttour]

It's my understanding the Nic Case turned in a time in his converted NTC3 4wd car at around 134 mph. (Converted from NITRO to Electric) Then the car was crashed on another run, so Nic went back to his 2wd Custom Works Intimidator and ripped off a speed of 160 mph. Clearly KILLING the field with a 1/10th scale car.

(Hopefully the info sent to me was close...)

GREAT JOB NIC~

[Craps]

It's my understanding the Nic Case turned in a time in his converted NTC3 4wd car at around 134 mph. (Converted from NITRO to Electric) Then the car was crashed on another run, so Nic went back to his 2wd Custom Works Intimidator and ripped off a speed of 160 mph. Clearly KILLING the field with a 1/10th scale car.

(Hopefully the info sent to me was close...)

GREAT JOB NIC~

Yes it is and somebody correct me if I am wrong, but Nic's 2 cars and Charlie Swanka with Novak were the only 3 cars that went over 100 mph mark.

[fasterthanspeed]

Yes it is and somebody correct me if I am wrong, but Nic's 2 cars and Charlie Swanka with Novak were the only 3 cars that went over 100 mph mark.

Yeah thats true. Rainmantoo reached about 97 mph.

[rainmantoo]

Yea.......98.6 mph. Missed it by THIS much. Kept spinning the tires at speed......not a good thing for 60 year old reflexes! No one else was able to slide their car between the "tank traps" at 90+ MPH though. What skill.

Jim or Rainman or Raindood

[rockpiledriver]

Yea.......98.6 mph. Missed it by THIS much. Kept spinning the tires at speed......not a good thing for 60 year old reflexes! No one else was able to slide their car between the "tank traps" at 90+ MPH though. What skill.

Jim or Rainman or Raindood

Your "old man reflexes" manage to beat me off the line on a regular basis.

Congrats Jim on winning the idividual trophy.

[NotWalkinBlind]

Your "old man reflexes" manage to beat me off the line on a regular basis.I thought they were going to be single vehicle top speed runs... y'all ran a few head-to-head acceleration runs just for fun?

BTW, explain what the "tank traps" were.

[rockpiledriver]

I thought they were going to be single vehicle top speed runs... y'all ran a few head-to-head acceleration runs just for fun?

BTW, explain what the "tank traps" were.

No Jim and I compete against each other at MHRA Drag Racing events, where he schools me on the tree all the time. ;)

[fasterthanspeed]

I thought they were going to be single vehicle top speed runs... y'all ran a few head-to-head acceleration runs just for fun?

BTW, explain what the "tank traps" were.
Tank trapsa are foam blocks that devide the drag strip. Rainman manuovered to the other side of the track and went between two tank traps that were 3-4 feet apart while going 85mph.


Did anyone get a picture of the little whitesh grey car when it jumped up int the air 10 to 15 fifteen feet up into the air, landed and kept going?

[TPhalen]

That would be my car. Ya, my uncle was there and got that on video. As soon as I can get it from him, I'll do some voodoo and get it up on the web. Problem is, getting it from him.

[jwm931]

Well I was doing some research to see what is out there kart wise and found this its a kids kart with a wheel base of 30in and 5in tires thats 35in OD from the back tire to the front tire with a live axel you can mount just about any motor to it very easy electric or gas it's 1800.00 RTR lol with a 50cc motor.

To get into the 150mph plus range I think this would be a great platform to start with? :D

LOL, when my son is old enough (turns 2 soon) I plan on making him a brushless kid kart. Been driving my wife nuts about it for 18 months.. ;)

There have been real electric cars running out at the salt flats for years, anyone know the speeds?

[IBJAMMIN]

LOL, when my son is old enough (turns 2 soon) I plan on making him a brushless kid kart. Been driving my wife nuts about it for 18 months.. ;)

There have been real electric cars running out at the salt flats for years, anyone know the speeds?


Ohio state university built a 30ft car called the buckeye bullet that ran 271mph for the metric mile record

another car called white lightning holds the mile record at 245mph with 6120 AA size batteries and 2 200 hp motors.

Another interesting fact is the first ever speed record for cars was set with an electric car around 1915? :)

[Akura2]

That would be my car. Ya, my uncle was there and got that on video. As soon as I can get it from him, I'll do some voodoo and get it up on the web. Problem is, getting it from him.


I got that on video too... the last time you did it... if I can get my computer at home up and running I'l take a look at the video and see if it's good enough to post and see anything...

Eventhough I took the RC Bike win, I never like to see anyone's rig go up in smoke.... thanks for the challenge, Tony and I hope to see you at the Superbike Challenge in September... or sometime soon at one of the club races @ SV

[NotWalkinBlind]

Tank trapsa are foam blocks that devide the drag strip. Rainman manuovered to the other side of the track and went between two tank traps that were 3-4 feet apart while going 85mph.On purpose?

[rainmantoo]

Actually, they're 50' apart but when you're standing on a K-Rail 500' away with your hands shaking & your knees knocking, they look real close together. Really no skill involved......it definitely was all luck! Isn't that a great picture of the crapster car? Check out the reverse lock on the steering & the "growing" rear tires.

[balang_479]

Isn't that a great picture of the crapster car? Check out the reverse lock on the steering & the "growing" rear tires.

yeah amazing picture, and what an amazing car. So what was the problem with the car again?

I heard that the tyres didnt handle too well on that tarmac?


And how will you solve it to make it more controllable?

[Craps]

yeah amazing picture, and what an amazing car. So what was the problem with the car again?

I heard that the tyres didnt handle too well on that tarmac?


And how will you solve it to make it more controllable?

Chemicals or different tires!

[joracer21]

www.racers-haven.com

click on the link to the right of the page

[Bart_Banaan]

Congratulaions to all involved! A great event, with great cars and a great speed!
Thanx for sharing this through the internet.

My website has made a 'report' based on all the info found here in these forums!
http://www.RC-Junkies.com/modules/news/article.php?storyid=1126

[NotWalkinBlind]

www.racers-haven.com

click on the link to the right of the pageThanks for the vid, joracer.

:eek: Holy crap, I can't believe you guys were just standing around down there at the traps.

I woulda been crouched down behind that wall like a turtle in a mortar attack... maybe holding a mirror or a video camera up with one hand in order to see.
:D
Yeow. If that thing had glitched and rolled and/or gone airborne, one or more of you guys coulda been looking at some major dental work and/or plastic surgery.

I realize the chances of that happening may have been relatively low, but I just gotta say, "YEOW" one more time. Heh heh.

All that said, I'd like to say that I think that CW body with the rear side dams is probably one of the slickest and most stable bodies for top speed competitions.

[46u]

Question did they have a speed trap or only use hand held radar gun? Are there any links on this event in English and articles?

[___rollin___]

I'm speechless, that's probably the single most amazing thing I've ever seen in my life. That 160mph run must have been a amazing site to see!

[balang_479]

Truly a site to behold...



Damn that was fast, Nic case how did you hold it in a straight line..

[Mister_Anderson]

Congrats to Nic on his 134.4 M.P.H. run and all the other entrants on their personal speed records.
Where were the speed runs held at? What about next year? I'll think about throwing together an R/C for the competition.
I know the contest is already over but for next year the Die-Hard Speed demons need to check this (http://www.popsci.com/popsci/futurecar/06f09aa138b84010vgnvcm1000004eecbccdrcrd.html) out. I have a copy of this issue in a box somewhere I may have to put it to work. Anyone who makes these techniques work in R/C I would love to see pics.
Thanks,
Chris

[46u]

Very well done! Did they use a speed trap or just the hand held radar guns?

[___rollin___]

Very well done! Did they use a speed trap or just the hand held radar guns?

Hand held radar guns, although next year their going to use a speed trap.

[46u]

If I am not mistake I thought for it to be an official record you had to use a certified speed trap? Do not take this wrong as I am very impressed with what all have done but radar guns are not all ways accurate. I am sure it is in the ballpark and close. But wasn’t the former 111 mph clocked my a speed trap?

[cherrytr8]

The rules say 40 inches and i saw steve post 24 max so what is the real max length?

[fasterthanspeed]

40 inches is the max. They changed it so 1/5 scale could also be in it.

[mgs9]

Hey guys, I have been away from this forum for a while, but if Im not mistaken, wasn't this event sapose to happen in july?

[46u]

Hey guys, I have been away from this forum for a while, but if Im not mistaken, wasn't this event sapose to happen in july?

Did you go back a page and read the post?

[mgs9]

Did you go back a page and read the post?
wow so it did happen, I just figured there would be way more talk about it. 160, thats insane, my car can't even do that speed. Thats faster than I expected. I though the cars were going to go closer to 115-125.

[mad-quick]

well 60 with a monster truck is just funny.truck come out the box hitting 50 so this is a joke.i will be there next year with a madforce/t-maxx hi-fly. speed hit at 72 and will still spin tires. but 60 is just funny

[2-fast4-u]

why is this guy banned for saying this???? i 2nd what he said

[Administrator]

This isn't my first rodeo... you're the same user. :roll2:

[thickstack]

Unfortunately, due to the size of the RC cars and vision restrictions, you want to get the cars accelerating as quickly as possible. In acceleration, weight is the enemy. Keep in mind that the "Heavy" cars they use for top speed runs at bonneville have a 13 mile course to accelerate and stop. We have less than a quarter mile before you wont even be able to see your car anymore. I would bet that Nic Case's car hit 134 mph in 1/8th mile or less. With RC Cars it's going to have to be Light and lots of downforce -and traction.

[maxd out]

I should have entered in the MT class ,my "E" on NiMh 2 yrs ago 106kph

[maxd out]

Theres the proof

[piggybackrevo]

i cant beleive people are in to r/c for fastest runs.... i mean yeah 160 wow that is amazing but whats the fun about it??? honestly people at the track all the time are talking about yeah how can i get WAY more speed out of my car when there sucking up the track running in to everyone already... r/c for racing man lol

[NotWalkinBlind]

Pigback, this was a "fastest" contest... this isn't what these guys do all the time... most race head to head on tracks like you do... this was just a side thing.

[IBJAMMIN]

i cant beleive people are in to r/c for fastest runs.... i mean yeah 160 wow that is amazing but whats the fun about it??? honestly people at the track all the time are talking about yeah how can i get WAY more speed out of my car when there sucking up the track running in to everyone already... r/c for racing man lol

Whats fun about it? The look on there face when they see a cute little 1/18th scale RC18 go by doing 80+mph :D

[ptpracing]

I'm not a top speed guy myself. I would rather race on the track. But EVERYONE who has ever seen my r/c car outside of the hobby the first question is always "How fast will it go?".

What was the fastest 1/8 buggy?

[porra]

ptpracing,

The fastest 1/8 buggy was 67mph powered by a Novak HV High-Voltage Brushless System (4.5). I'm pretty sure it was the 4.5.

[Mod Man]

I have a Tamiya Dark Impact 10th scale buggy that runs 64 mph. It should be easy to get an 1/8 scaler over 70. :)

Matt

[BloodDemon]

People actualy do RC drag racing and LOVE IT! And what about the teather car guys breaking 200 mph every weekend? Im shur they are happy with their hobby. Just dont crack on what people like doing. To me Rock crawling is as boring as watching Golf...and both are huge sports.

[Mod Man]

Well said!

After all, can you imagine that people actually pay big money to bird watch? Then others like to hang themselves with hooks through their flesh.

It takes all kinds to make up a world! ;)

I love anything technical, especially if it requires technical fabrication ability and involves speed! :D

Matt

[Mod Man]

Unfortunately, due to the size of the RC cars and vision restrictions, you want to get the cars accelerating as quickly as possible. In acceleration, weight is the enemy. Keep in mind that the "Heavy" cars they use for top speed runs at bonneville have a 13 mile course to accelerate and stop. We have less than a quarter mile before you wont even be able to see your car anymore. I would bet that Nic Case's car hit 134 mph in 1/8th mile or less. With RC Cars it's going to have to be Light and lots of downforce -and traction.

I know Nic personally. His cars weight alot more than you would think. He used up nearly 1/2 mile on his run. It took 1/4 mile to hit 134, then most of the next 1/4 mile to slow it down. Also, his 134 mph car has only a modest amount of downforce, but enough to hold the nose down. The big issue with short wheelbase cars is torque over at speed. The wind drag at 130 mph normally equals the traction of the tires, so downforce is needed. If there is too much downforce at the rear, the car will literally wheelie and torque over. So, front downforce is required to counter it.

Hitting 80 is not hard with a road car, 90 is pretty difficult, 100 is an order of magnitude harder, breaking 110 is extremely technical and requires a large infusion of knowledge and cash as well as tons of experimentation.

Matt

[BloodDemon]

I so want to be hung on hooks from the celling. My friends have done it and was so COOL!
Yea that was totaly off the subject but...im one of thoes guys lol.

[balang_479]

I know Nic personally. His cars weight alot more than you would think. He used up nearly 1/2 mile on his run. It took 1/4 mile to hit 134, then most of the next 1/4 mile to slow it down. Also, his 134 mph car has only a modest amount of downforce, but enough to hold the nose down. The big issue with short wheelbase cars is torque over at speed. The wind drag at 130 mph normally equals the traction of the tires, so downforce is needed. If there is too much downforce at the rear, the car will literally wheelie and torque over. So, front downforce is required to counter it.

Hitting 80 is not hard with a road car, 90 is pretty difficult, 100 is an order of magnitude harder, breaking 110 is extremely technical and requires a large infusion of knowledge and cash as well as tons of experimentation.

Matt


when you mean road car you mean a 1:10 sedan or any onroad racer??? otherwise what cars do you own.

[Mod Man]

10th scale touring car.

My Tamiya Dark Impact off road car is running 64mph and my TC4 is at 115mph in its previous guise, but it is almost finished with a rebuild to increase speed further. It ran 115 mph with a Vette body on 6S. Now it is running a hand laid carbon fiber wedge body on 12S. I will keep you all posted on the progress. I will begin a build thread when it is finished.

Matt

[balang_479]

wow, thats some speed.

Please do post a thread, with all the calculations you made (i think it was you) im really interested to see what it looks like.