For some time I'm working on a 2.4GHz RC controlled LEGO car. Trying to create maximum speed with a LEGO-based car using standard RC-components (sorry, not for purists).
To make this work, I introduced some rules. The car must be build using LEGO parts, except for the battery, motor, speed control, steering-servo, remote-control and receiver (and optionally a car-body).
Fully agree with comments regarding LEGO not being able to match RC-performance. But, nevertheless, I enjoy pushing the limits to see what speed can be achieved using (mainly) LEGO. It has been a great journey. Lots interesting problems to solve: reducing wear-out, maximizing traction, optimize direct steering, increasing control with suspension, etc.
Happy to share the results so far. Haven't done a proper speed check, but some rough calculations show a speed above 50+ km/h.
Please check the video: LEGO RC Car video.
LDD available on request.
Open for comments, suggestions, improvements.