World's Fastest R/C Car, anyone?

[Matt Reiland]

Originally Posted by Billfred

Now, with all of us fielding robots with four-speed eight-motor shift-on-the-fly gearboxes, you just KNOW that a couple of FIRST teams could whip up a mind-blowing car. The electric world record is 111 mph on 24 cells and a two-turn brushless motor.

Anyone mildly interested?

Hmmmm, My last car, (Kyosho Inferno Kani II) was pretty darn quick (~50mph with the OZ 2.5hp engine) but it was actually an off road car with a high stance and only a single speed. IF you wanted a really fast car, here is what one would have to do.

1.First, ditch the IFI control system, it is too big, too short of a range, and not useful for an RC car. Get a PCM radio that can cut your throttle if it gets out of range so you don't kill the person 3 blocks down the street from you when it goes by in a blur.

2.Create a Custom aluminum chassis based on a comercially available RC road car probably 1/8 scale which already hit over 70mph
http://www2.towerhobbies.com/cgi-bin...?&I=LXGAJ2&P=0

3.Take two .21-.26 race engines (~2.5-3 hp ea) and link them together like the Ofna Titan Twin. http://www2.towerhobbies.com/cgi-bin...?&I=LXFJB9&P=0
I can't see how you could get that much horsepower out of electric for even a fraction of the weight with the motors and batteries. (Take a look)
http://www2.towerhobbies.com/cgi-bin...?&I=LXEPH9&P=0
OVER 3 HP at 39,000 RPM!

4.Take the Automatic 3 speed from the Kyosho Mad Force http://www2.towerhobbies.com/cgi-bin...?&I=LXCGR3&P=0
and send it into a small custom high speed gearbox driving the front or rear wheels, such that the gearing uses the motors on the top end.

5.Tune in the steering servo for extremely dull steering input so that a tiny movement at 100mph doesn't launch it 30ft off course.

6.Add in a well supported body with some downforce so it doesn't take off like a jet.

If you can do all that, my guess is it will be pretty fast!!!!!