Was building a pro track and the land owner decided to give up on the idea because he thought he wouldn't make a lot of money on it and of course when I explained that an RC Track isn't designed to make a lot of money just enough to cover expenses. He just said go away. So I did and now I'm selling my "My Laps RC4 System" and it comes with 20 RC4 transponders.
Willing to Trade:
The MYLAPS RC4 Timing System measures lap times, connected voltage and ambient car temperature. It is used by indoor and outdoor RC races.