This instructable shows you how I used Lego Bricks and components to design Lego Race Car.
My Lego Race Car using different wheels sizes for the front and rear. My Lego Race Car did not have front wing flap, similar to some Formula 1 race cars in 1960s.
This Lego Race Car did not used all Lego's parts. I built this one the same way I built my R/C Lego Car. A small servo was used as the turning mechanism. And I used motor and gearbox with axle that I took out from small R/C car.
When I first started building this car. I thought of using XBee module to wirelessly receive commands from PC or Laptop. (See test video in Step 13). After I finished the car I thought of using RN-XV WiFly module to receive commands from my iPod touch.
The reason to use iPod Touch (4G) as a remote control device instead of using the laptop or PC to control the car. Since the iPod Touch (or iPhone) is so small that I can hold in my hand(s), I could move around to follow the car instead of sitting at the same place with a laptop sit on my lap.
Here is how I created this Wireless Lego Race Car.