Try#2 Went over 100!!

[promodvette]

Went for second run last week and got 110.1! I put more downforce on it and loosened up the chassis a little bit and it helped it out some. The only problem i found this time was the o-rings as the front tires were swelling and coming off the rims. Other than that I beleive its ready for 6 more cells...24 just aint enough!!

[Toyotatogo]

Hello! promodvette could you provide your drivetrain ratio, tire diameter, and estimated engine rpms? I was also wondering if you had any photos of the car you could post?

btw.... I'm in no way doubting you hit those speeds ,but it is always nice to add those thingys with it.... lol :D

[surfer]

ya...PICS PICS

[Mike Keeney]

Congrat's. :) Way to go dude.

Mike Keeney

[ElectricThunder]

Dude...that's awesome. What's your setup? (I won't steal it, I'm not even entering...I'm not even on the right coast! lol!)

[DaFF]

I saw your car in my crystal ball :

... 1/10 dragster type ...

... hard rubber tire on alum wheel @ the back ...

... brushless motor ...

... schulze controler ...

... sub C cells, but thinking at using Lipo...

... light ... very light

... with a big wing for loads of downforce...

... fast ... very fast ...

LoL

I see through you Promod, you can't hyde anything to me !

BTW, do I have good psychic power ???

Anyway, good job Promod, keep-up the good job.

http://www.woodburndragstrip.com/x_images/04cartier_promod4.jpg

DFF

[Fastcar]

great job promodvette...110 is a super run... I usually ca the bands to the rims on my cars....might help for you to..... with you going so fast, I'm ready to test mine.

[MicroMan]

There is no way he is going to tell you his setup, no way.

[Fastcar]

for real microman... I don't know why those guys even asked....

[ElectricThunder]

I asked cause i'm curious. I'm all the way in florida, no way i'm competing in this thing, nor do i have the funds to do it.:p Anyways, neat funny car.

[Toyotatogo]

I just realized that guys thanks for pointing it out.... :cool:

Classifed Information right ...... lol ;)

[mrcrazy]

Daff, what type of car is that, is it a real rc car? what scale, brand?

[mgs9]

Dude im all jealous now, you guys are talking about how you got your car to go 100+ and i havent even started mine yet. Only think i have done is rigged up a bunch of batteries on my little academy junker. lol

[Gemini12602]

Daff, what type of car is that, is it a real rc car? what scale, brand?


I'd definately say that is a real car... and a beautiful one as well.

[DaFF]

Real car. Pro Modified Vette ( to illustrate my post about Promodvette LoL )

More pictures here:

http://www.woodburndragstrip.com/pages/photos_04cartier.html

DFF

[Fastcar]

HEy promodvette, how much space did you use to get to 110 MPH? wondering becasue at the track the other day, (rc drag track) I ran 75MPH on the 132 foot strip...

[studysession]

Way to go!

[promodvette]

hey sorry for bein so late on responces...i dont have any pics yet..im tryin to find a digi camera for cheap..spendin all the $$ on these r/c things lol...setup is really pretty basic...microswitch as throttle...its fun blipping faster then slower and slower untill wide open...the servo for the microswitch when put all the way in reverse controls a disk brake to slow it...pretty trick but wont stop on a dime like typical disk...micro servo not too strong...i used 24 integy 3300's i found on ebay for pretty cheap...i thought of using some aa size for weight issues..that will probably be next.. the rear tires are 4 inches diameter chassis is .055 carbon fiber with some stainless wire from one end to the other to tighten or loosen the flex of the chassis...the body was copied from a slotcar body called stilletto...its wild...thats pretty much all i can say about it...i run it on a small airport runway that is about 15-20 min from my house..i would say i used about 1000ft total...took about a 1/8th mile (660ft) to get up to speed and the rest to stop (mostly coasting just to get idea of it) oh and the picture of that promod corvette..thats bad ass..you can own it for 145,000 turn key or 90,000 no motor or tranny....not bad..had 90,000 in mine turn key...it was fun just cost wayyy too much to keep up...

[studysession]

Microswitch as throttle????

[NotWalkinBlind]

What's the straightaway length at Irwindale Speedway, and do you think you can deal with it's being that short as compared to the space you needed on the runway?

Is that runway asphalt or concrete?

[NotWalkinBlind]

http://www.irwindalespeedway.com/site/track.html

The track is a half miler... dunno how to figure the straightaway length.

There's a dragstrip there also... sure would be nice to hold the event there. I know there are issues with radio reception, but still... seems like the driver could stand about 1/10th to 1/8th mile down from the start line and that would give enough reception before and after the car passes him/her to get a decent run in.

[studysession]

Have you seen most drag strips? They are not the smoothest of surfaces. They have melted rubber on parts of the track from the cars. I went looking at local drag strips when I was looking to break the world land speed record before this event was anounced.

[Mike Keeney]

Have you seen most drag strips? They are not the smoothest of surfaces. They have melted rubber on parts of the track from the cars. I went looking at local drag strips when I was looking to break the world land speed record before this event was anounced.
What makes you think the oval won't present the same surface hazards? Ask any NASCAR driver about running in the "marbles". They'll all tell you it's a bad thing. However, both types of tracks are swept before each event.

Personally, I'd rather play at the dragstrip, solely because there's plenty of room to stop without wrecking your car. The wall scares the hell out of me. But it's not my say so either. If they want to have the event at the oval I feel it's not my place to bitch about it. I'm of the opinion that if you (meaning anyone) don't like the track, don't run. It's as simple as that.

Cheers,
Mike Keeney

[promodvette]

study...aparently you have not seen a good dragstrip then...the only place there would be enough "melted rubber" to cause any harm is the starting line...on down the track they are smoother than any round track or street you drive on. And YES a microswitch...aparently you havent seen r/c dragracing? There arent many esc's that can handle 24-30 cells that i am using...the ones that are are big $$$ microswitch...not even $10.

[Gemini12602]

Theres a nice, newly surfaced IHRA sanctioned drag strip about 30 minutes from me. Maryland Internation Raceway. They should have it there :D
I would love to take my car down it once... just to see what it would do lol.

Speaking of Pro-Mod vettes... I'm trying to modify one for this free racing sim called racer. Dunno if any of you have heard about it... www.racer.nl check it out.

[NotWalkinBlind]

Personally, I'd rather play at the dragstrip, solely because there's plenty of room to stop without wrecking your car. The wall scares the hell out of me. But it's not my say so either. If they want to have the event at the oval I feel it's not my place to bitch about it. I'm of the opinion that if you (meaning anyone) don't like the track, don't run. It's as simple as that.I agree, Mike... but for unsponsored guys like you who are putting loads of their time and money up, I think it would be a crying shame if you had to make a choice out there on the track. What choice? The choice between staying in the throttle because you're really hooked up and you know you've got a chance at the record, and backing off earlier than you want to because you're not sure you can make the turn.

Those manufacturer-sponsored guys can (and will, I bet ya) get access to that track several times between now and the competition and when the big day comes, they'll know exactly how long they can gas it and when they need to back off to keep from smackin' that wall. Or, if an independent has already made an incredible run, and the only way the sponsored guys can beat them is to stay in it and splatter, they can do that, too. No hesitation... money and time? No big deal if a big manufacturer is backing you and says "go for it... we'll help you sweep the track afterwards."

I think it's time to start a letter writing campaign to have this thing moved to the dragstrip... that way the independents have a better shot. And I think the organizers would respond well... and I don't think the manufacturers (or anyone, for that matter) would cry foul... the manufacturers are all classy and everyone would love the inevitably increased level of competition... and the higher speeds. What do you think?

[Mike Keeney]

Hi NWB,

You make excellent points. The wall cannot be easily dismissed. I would like to be able to focus exclusively on the car going fast, but the existence of the turn factors heavily on the design considerations. It's a catch 22 situation. The steering speed needs has to be slowed down in order to maintain control of the car at top speed. But a slow steering speed probably won't be ideal for making the turn. What to do, what to do? I think there is a difference between a contest looking for all out speed and one looking for speed and the ability to make a turn. However, we still haven't had a chance to really assess the track, so no one truly knows if there is really a problem or not. If the turn becomes a factor that must be accommodated I think the best speed posted wouldn't truly be the best speed the car is capable of. I have no doubt the record will fall, but I hope it falls to a car that wasn't limited to the best speed while turning. At this point I think everything is pure speculation. The only way to really know the answer to this question is through feedback from racers who are testing their cars at top speed. I hope that when the cars are being tested that one of the tests is knowing how many feet it takes to get up to speed and then stop.

The folks at the magazine seem to be very reasonable and I'm sure they are just as concerned about these issues as we are. But I don't have any problems waiting for real test data. At this point I can say that I would prefer to race on a straight track. There are many benefits IMHO, but it's not my call. The downside for me is that I have to factor the ability to turn into the design of the car. The design would be different if we were going to race on a dragstrip.

I certainly don't want to lead a charge to change to the dragstrip. I have faith that they (the promoters) have the same goals and concerns as everyone else. If the turn is going to be a car killer, I think they'll change the venue without anyone having to complain. Like I said before, it's not up to me though. If it doesn't look like my car can make the turn I simply won't run it any faster than what it takes to survive intact.

Cheers,
Mike

[studysession]

study...aparently you have not seen a good dragstrip then...the only place there would be enough "melted rubber" to cause any harm is the starting line...on down the track they are smoother than any round track or street you drive on. And YES a microswitch...aparently you havent seen r/c dragracing? There arent many esc's that can handle 24-30 cells that i am using...the ones that are are big $$$ microswitch...not even $10.


Can you post a pic of the setup with a microswitch? I assume you have a brushed and not a brushless motor?

[NotWalkinBlind]

Well, another variable in the whole picture is that since this is a rolling start, there will no doubt be several competitors who will stuff their cars before they even get to run through the trap because they're attempting to carry as much speed as possible onto the straightaway.

I'm not entering... don't have the time or the money... but I hate to see 1) a "less than" event, and 2) people like you who are fielding awesome hardware have to lay back.

I know you're reluctant to spearhead a campaign for a venue change because you're planning to compete. I would suggest this... if merely having posted the idea to move it to the dragstrip isn't enough, I think if enough people read this and send an anonymous letter stating that they're a competitor and don't want to be branded as a whiner, but believe strongly that there are many legitimate reasons for a change, I think good things could happen.

People like you who are going to have a car capable of screaming to much higher speeds than what the constraints of Irwindale will allow are just gonna come away extremely frustrated. You're gonna be able to keep it nailed... what... like 4 seconds at the most? Just think how that's gonna feel... that, plus knowing you could've probably beat the sponsored guys if you'd had more room.

I say go for it, guys. Get out pen and paper.

[Mike Keeney]

From what I can tell, the attraction of the oval track is because of where the driver will stand while their car is running. It's the flagman's stand I think. The rational, as I understood it, has to do with the radio staying in contact with the vehicle. That's reasonable enough IMO. But I think that concern could be better addressed on a straightline track. There's no reason the driver couldn't be at the finish line. This would make the signal strongest at the vehicles top speed. With a rolling start contestants can start as far back as they want in order to insure max velocity at the finish line. Drivers could stand behind a couple of those concrete dividers to make sure they don't get hurt by their own car. Even if they do, how can you blame the promoters, after all, you're the one who was driving. You can't sue someone because you ran over yourself. :p :D :rolleyes: LOL

Mike

[NotWalkinBlind]

At the dragstrip, the driver could stand atop a Ryder truck positioned anywhere along the track he/she wanted it.

Or in one of these:
http://www.oakshire.com.au/images/equip/equip_cherrypicker_sml.jpg

[Mike Keeney]

I don't think they build one of those big enough to lift me. :eek:

[NotWalkinBlind]

Worry not, dude... they have a "Big Mike" version.

[NotWalkinBlind]

An extension ladder and a Ryder truck is probably all that's needed.

And if someone can donate an old swivel recliner with a patio umbrella duct-taped to it, I think that would make for some cool-looking pix in RCCA.

Plus, you could push 'em off on the ground when the competition's over and it could double as a victory stand.

And ya know Ryder would donate the truck for the free publicity.

[Mike Keeney]

Worry not, dude... they have a "Big Mike" version.
Do you know if they have a "Really Big Mike" model. ;)

[NotWalkinBlind]

Why, do you have a problem with the Ryder truck scenario? Heh heh.

[Mike Keeney]

Well let me put it to you this way. When I go to the beach, some group of do-gooders always try to push me into the water saying "Swim, Swim". :D

Nah, just kidding. I may be old, but I'm not really that fat. ;)
Mike

[DaFF]

Hi Mike, hi NTB,

Here is my take on this dragstrip / oval track issue:


For me, this challenge is about speed but model car speed.


If it is only going to be the fastest on a straight line, it will become like one of those rocket shaped on wheel / dragster that are not even design to take a turn and are, to my opinion, not anymore cars.

To my opinion, a car is a vehicule that has a steering system and is able to carve through turn at high speed.

By having this oval, it gives a fair chance to vehicules that are truly cars and thus can take advantage of getting more room to gain more speed through the whole or part of this oval race track.

However, I do understand your frustration being the fact you will only be able to do WOT for half of the oval straight, thus restricting your speed to half of what your vehicule can do.

This challenge is way more complex than be the fastest in a straight line and that's what makes it interesting because it is a mix of driving skills, handling of the cars and all out power.

Please note I am in no way taking down your projects or trying to start a flame war.

As said before, I can't wait to see you guys entering the ring with your awesome project cars :)

What thrive me is the fact that this challenge is so complex, nobody can claim he will take the win for sure.

L8ter

DFF

[Gemini12602]

I think putting it on a drag strip could also benefit in can be made that all of the cars have the same amount of space to get up to speed. And believe me, driving skills will still be important. My car may only reach about 50, but I can only Imagine how hard it would be to keep it straight at 110+. There will be more space to protect the cars incase they go wild. Also the driver could stand at the halfway point, and after the finish there could be a catch net for out of control cars. Much better than a concrete wall. I think the most important reason for wanting to move this event to a dragstrip would be protection of the cars.

[Mike Keeney]

Given that the contest is only about top speed of an RC car, the ability to corner at top speed is a serious limiting factor. To the best of my knowledge, the fastest 'real' cars either go in a straight line or slow down to corner. What would be the point of having a car that can hit 200 mph but has to limit its speed to 150 in order to make a turn?

If the event is moved to a dragstrip, would it have an effect on the design of the cars? You bet! I don't see anything wrong with that. The contest is about top speed, nothing else. There won't be a spot in the record books for the fastest RC car that can still make it around the first turn of an oval track.

Will someone bring a bullet car? Sure. But that doesn't mean it will have an automatic advantage over any other car. Everyone that brings a car will bring one that is specifically designed go faster than all others. We're going to see a ton of creativity here and I think that will serve to make the contest all the more interesting for everyone, including the spectators and readers of the magazine.

If the contest were switched to a dragstrip I think the starting point should be up to each contestant. My car simply wouldn't survive a ¼ mile trip, so I would want to start somewhat closer to the finish line. Others with high rpm electrics might want to use the whole track to coax every bit of speed they can.

A dragstrip would be the best for vehicle safety. There's a ton of room to slow down safely, and all dragstrips are designed with some method to catch or stop an out of control car that makes it to the end of the pavement. I would prefer that to a car killing wall. If too many cars hit the wall, it will probably be the death of future contests held at the same track.

Cheers,
Mike

[mgs9]

What ever your opinion is on this matter , i dont think "Car Action" is going to chang there track for the contest. I think the current track is good, I think it will be plenty of room for most people and certanly to beat the current record. Like daff said it will pretty much keep the design's to a sane level, and to scale if you think about it this would probly be one of the bigger area's to break the record, Lets say the strait away is 1/8 of a mile of a mile, to a 1/8 scale that a whole mile to get to the top speed. I think thats enough room.

"do what you can with what you got"

[Mike Keeney]

mgs9, you need to go back and read my earlier posts. I'm completely of the opinion that it's up to the folks putting on the event to decide where they want to have it. Nor was I complaining or whining about the oval. My position is that I prefer the dragstrip to the oval, and I think I put out enough reasons for a reasonable discussion. I also clearly stated that we need real world feedback from people when they test their cars. If the numbers say turning will be a problem I think the folks at the mag will take the info very seriously and come up with something to overcome the problem.

No matter what though, it's not my event and I'll deal with whatever the track throws at me.

Cheers,
Mike

[Potato]

Originally, the contest was limited to 24" long cars driving the oval. The size limit has nearly been doubled to accomodate complaints from people with big cars. Now there's discussion of a change to a drag strip... I'm confused, is this a contest of r/c cars, or cars with r/c control? (I can sit in a machine 40 inches long and pilot it myself.) 40 inch long "r/c cars" going straight down a dragstrip does not resemble any popular form of r/c to me. In fact, a 1/4 mile track is no guarantee of higher top speeds, and may be merely a contest of acceleration. I understand and begrudgingly accept the rule changes thus far, (and appreciate RCCA for holding the contest), but there needs to be a sense of finality with the rules and venue so people can just get on with it.

[studysession]

Personally I wish it staid with the 24 inch rule. Keep things more equal all the way accross the board. JMPO

[Gemini12602]

Originally, the contest was limited to 24" long cars driving the oval. The size limit has nearly been doubled to accomodate complaints from people with big cars. Now there's discussion of a change to a drag strip... I'm confused, is this a contest of r/c cars, or cars with r/c control? (I can sit in a machine 40 inches long and pilot it myself.) 40 inch long "r/c cars" going straight down a dragstrip does not resemble any popular form of r/c to me. In fact, a 1/4 mile track is no guarantee of higher top speeds, and may be merely a contest of acceleration. I understand and begrudgingly accept the rule changes thus far, (and appreciate RCCA for holding the contest), but there needs to be a sense of finality with the rules and venue so people can just get on with it.

People don't want to change it to a drag strip so much to have more space for speed, but more space to stop. If someone has a car that has its throttle hang wide open it would smack into the wall at the oval, but could hit a catch net at the end of the drag strip run.

[Mike Keeney]

Personally I wish it staid with the 24 inch rule. Keep things more equal all the way accross the board. JMPO
It doesn't make anything equal at all. This is a hunt for the fastest RC car, not the fastest RC car at an RCCA sponsored event. The length rule is something RCCA came up with, not Guiness. Opening up the length to 40" simply adds more variety to the contest. One thing for sure though, it doesn't exclude or prevent any of the smaller cars from taking the prize.

As a person who is building one of those 40" cars that you don't think should be allowed to compete, I can assure you that I don't think for one second my car couldn't be beat. This isn't a contest of horsepower vs voltage, or 1/10th vs 1/5th, it's about speed. Ingenuity will be just as important as raw speed. That's why I'll be rooting for everybody, big or small, young or old.

Cheers,
Mike

[mgs9]

Kinda off subject but tomarrow im doing a 1/16 mlie, 330 feet run, I would do 1/8 mile run but i dont feel like measuring it out right know. Im going to be running a pretty much stalk traxxas 4tech.Im going to run 15.8 volts through my msc and I changed the gear ratio. Ill be lucky to break 45mph but it'll be fun. If you want ill try to get pics of my rig. :D

[raderrustler]

Promodvette,
well done, efficient and cost effective. Way back in the Day I ran Pro Street in my camaro and got a few passes in a friends pro-mod after getting qualified. They are soooo much fun. Good luck at the challenge and I like your outside the box thinking. I will see you there with my project..

Randy

[mgs9]

My run was average, i could only run 8.4 volts though i have to get a conecter on my one set of batteries and i had lowerd my suspention too much and the thing was dragging in some spots. So I got get to the store for a new conector, Then ill give it anothr run. I have pics but i they wont format right. I formated them to Gif and jpeg but when i try to load them up on the atachment thing it keeps saying unknown file.

[mgs9]

I did my run today i got it going 35 mhp after the second run, the first run my trim was off it ran inot the dirt on the road side and my msc got stuck and a had a bad wreck both back tires got peeld off as it spun a little hole in the dirt, Thats the down side to msc's.
I had to do it mathamaticaly, i ran it through a sction of road and time it between the two points, so i got the average of the speed not the peek speed. I dont think thats too bad for a crapy old 4tech. I dont know if i cant get my pics up but ill try.

I cant post them i have it formated to jpeg but it keeps saying invalid file type

[Oldway]

A history lesson: The developement of modern day R/C competion grew out of Southern California. Associated Electronics was born there, Team Losi, Proline and the list goes on. One day some one had the idea to run oval pan cars on a bycicle velodrome in Encino Ca. These where special events which Dan the "Bananna Man" promoted called "Thunderdrome". To make these races even more interesting they decided to hold an "Insane Speed Run" for 1/10 th scale R/C cars. The rules where much the same as RCCA's except you had 2 minutes to make your fastest complete lap.
The aging of the Encino Track made it difficult to keep the cars on the ground. Then with the opening of the 7/11 Velodrome for the Olympics in Domingus Ca. the cars started flirting with 100mph on a slippery 32 deg. banked concrete oval.
Then there was the demise of the Domingus track to make room for a Soccer Stadium which left nowhere to hold the Insane Run. It seems Cliff and Associated really wanted to top the 100 mph mark and arranged to run at the newly constructed Irwindale 1/2 mile.
So the idea of R/C speed runs on oval is deeply ingrained in the minds of the folks who started it all.