sickest r/c car

[quickestreflex]

i have a crazy idea i would love to strap a amt pegasus r/c jet turbine to a 1/10 rc car , this turbine puts out 19lbs of thrust. it would push a 30+lbs r/c jet to over 100mph so you can only imagine what it would do to a 4lb r/c car , god im crazy

[rc10gtisthebest]

sorry to burst your bubble but the vehicle must be wheel powered. Or you could go like me and design a car where the turbine turns the wheels. That's what I did on my design. I estimated it to go about 169mph. But I don't have the finances to do it.

Oh Well..
-Todd

[EddieWeeks]

An AMT Pegasus puts out over 30 lbs of thrust and burns ~16 oz min and has flown
my friends jets to 237 mph.

Eddie Weeks
http://bellsouthpwp.net/w/e/weeks1/car.html

[ElectricThunder]

Originally Posted by EddieWeeks

An AMT Pegasus puts out over 30 lbs of thrust and burns ~16 oz min and has flown
my friends jets to 237 mph.

Eddie Weeks
http://bellsouthpwp.net/w/e/weeks1/car.html

WOO! That's a mean lookin project ya got there. I like the body, is that some type of lotus??

[EddieWeeks]

I don't really know what kind of car that is... The invoice says its
a Porsche GT1, but looked all over the Internet for GT1 and could not
find that car... Does any body else know ?

Eddie Weeks
http://bellsouthpwp.net/w/e/weeks1/car.html

[Rotary Rocket]

That is a 1/5 scale FG car (made in Germany). The shell is a Poarshe GT1.

It is missing the large rear wing, they raced the real car in LeMans, and the GT series in USA, Japan, and Europe.

[Chris LaPanse]

911 GT1:

Yours:


They do look pretty similar, except for the wing.

[EddieWeeks]

Yea.. the wing is still in the box.. Thanks for the info... I never
would have guessed 911.

Eddie Weeks
http://bellsouthpwp.net/w/e/weeks1/car.html

[Zr2]

That set up.... Is your friend using the Jet engine of means of forced air for the turbo effect? I'm not really understanding how everything is going to work? If indeed the Turbine is being used for forced induction for the turbo is the air not hot? Because if it is the turbo effect is vertually lost.

-Matt

[Mike Keeney]

Wow, that is sure a cool looking car. I couldn't figure out what it was at first. Sorta looks like a fishing lure if you look at it backwards.

Mike

[ElectricThunder]

Originally Posted by Chris LaPanse

911 GT1:

Yours:


They do look pretty similar, except for the wing.

mmmmm....sexeh...

[NotWalkinBlind]

I hate it when an R/C body isn't properly proportioned to scale.

Look at the size of the cockpit area on the scale GT-1 (compared to the size of the rest of the car) and compare it to the cockpit area on the R/C... the R/C GT-1 body looks like it was meant to have a back seat. Whoever drew that up and made the forms ought to be fired.

However, that's not pertinent to all the good design and excellent machining you've done, Eddie... incredibly beautiful work.

[NotWalkinBlind]

Do you plan to drive that screamer with a stick radio?

Just asking because of that last pic in that link.

[EddieWeeks]

No.. I don't know how that got there. I just got a 3PK and I am
was superised how many mixes, ABS and buttons that thing has..

I have programed 9ZAP, JR 10s, Profi 4000s 12 chanels ect.. but had no idea
the top of the line car Radio was so advanced...

Thanks.. NotWalkinBlind.. Tell you the truth.. A lot of that work was done on
my band saw.. And you did not see all the scrap parts I made..hahah
but I am getting better with my new Lathe....

Eddie Weeks
http://www.corpcomp.com/weeks1/

[Toyotatogo]

dang eddie thats sick ...... now I know i'm going to be there to check that thing out man please get it working asap ... lol I really would like to see that thing goooo !!!!

[astainback]

That is a sweet car there Eddie. Man, you are making me want a car bad now!!!!

I am going to have to go out and get one.

[NotWalkinBlind]

Do you think all (or most) people who run an IC engine under a body will forego the cooling hole in the windshield in order to have better aerodynamics... being relatively concerned about cooling with such a brief runtime?

This is probably a stupid question that's been answered before somewhere in this forum... just curious.

[EddieWeeks]

NotWalkingBlind: When I ran that car with a G23 it ran fine for a long
time with all the holes block.. not cutout.. When I put the turbine in it
I will open up a few of those holes, but there will be a fairly large hole
in the top of the car for the exhaust to blow up..

Thanks astainback.. If you really want a car I can build it.. only takes money...

Toyotatogo: I will update you as soon as I finish something on it..
I am making the housing for the turbo out of carbon steel pipe right now..


Thanks for all the support.

[bufferoo]

Eddie,

Quick question for you. Just how much "thrust" would you expect from the intake of the turbine? I know that the vehicle can't be powered directly from the exhaust blast but surely the intake has got to help pull the car even a little bit.

I'm sure I read (a long time ago- popular mechanics maybe) that this was one of the things that helped the sr71 blackbird move so fast. Some of the thrust was due to the engines suction.

Just wondering.

Bufferoo

[EddieWeeks]

The air going into the intake is only going around 200 mph and I don't
plan on putting a large air scoop in the body of the car... This type of engine
will get all the air it needs no matter how much I screw it up.. (no ducts ect)
This was learned with many different turbine instillations in model airplanes..

The supersonic flow around the moveable intake on the SR-71 is much more
complex then a simple centrifugal compressor.

I was running a AMT 450 (45 lbs thrust turbine) on a test stand and
squirted the intake with the water hose.. Not on low but full blast and the turbine
keep running no problem... And this is at ~100,000 RPMs

Maybe it will suck its self down to the road for better traction.. hahah

Eddie Weeks
http://bellsouthpwp.net/w/e/weeks1/car.html

[ElectricThunder]

That's a totally killer project eddie. I wouldn't be surprised if you hit 150 or higher, especially if that thing can turn the turbine at over 60,000 RPMs.

[thefasttrack]

Originally Posted by EddieWeeks

The air going into the intake is only going around 200
http://bellsouthpwp.net/w/e/weeks1/car.html

yah only 200 mph

[EddieWeeks]

yep .. 200 mph.. I can show you..

From the Jetcat web site the engine has a mass flow of 0.21 kg/sec
and with the density of dry air at 1.2 kg/m^3 you can figure the volume at
0.17 m^2 / sec... The intake is only like 1.8 inches across so it would have
to go 105 m/sec or ~200 mph... Its very simple

The real question is what is the velocity of that air comming out the back
with the same size hole at 700 C ? and how fast will it turn my turbocharger.. ?

[EddieWeeks]

update... Turbine is in the mail and will be here next week..

http://jetcatusa.sitewavesonline.net/p80.html

Its a P80 with 19 lbs of thrust... It weights ~3 lbs and starts its self
at the flip of a switch on the transmitter..

I have been told that Tail pipe vel is around 700 mph this gives a max
rpm of 200,000 at the turbocharger.. Now that ain't going to happen
because at 50,000 rpms the car will be doing 160 mph with the 5.5:1
gear ratio its at now.. I am sure thats not the best ratio but it will
be interesting to see if it needs to be higher or lower.. I have enough gears
for both directions... Can't wait.

Eddie Weeks
http://bellsouthpwp.net/w/e/weeks1/car.html

[_HUMAN_CLAY_]

I always had the idea of putting a .18 engine on each wheel............no gears, just mounting the wheel right on the shaft. MWHA HA HA HA HA HA