Nitro RC Cars

[Magnus213]

In case you've ever been curious, the acceleration of an HPI RS4 3 Evo with an O.S. .18CV-RX with the 11G slide carb and 19/23 pinion against 41/45 spur gears (I think).



Measured using a Vernier 3G 3-axis accelerometer. Test performed on carpet-style turf, and performance hindered by the mass (0.372 kg) and aerodynamic effect of a LabPro unit inelegantly strapped to the stock M3 body. I gradually leaned into the throttle, as flooring it resulted in poor traction and a bad start.

For those who've taken calculus, the integral of acceleration with respect to time is velocity. Here, it's evaluated to be about 27.5 m/s, which is a speed of 61.5 mph / 99 kph. This speed is reached in delta t, which is 3.75 seconds. Not too shabby. Five brownie points to whomever can tell me when it shifted into second gear.