RS Motor Upgrade
 

I recently bought the motor upgrade from Radio Shack only to have it not work. Thinking it might just be a bad batch I took them back and tried another set. Still no luck. I'm very disappointed that I can't upgrade my car. It's fun to play with but I was hoping to be able to throw in the 34k motor. Anyone else run into this problem?

I had this problem when I put the upgrade in a 2nd gen ZZ. I ditched the 2nd gen car and got a 3rd gen and noticed a huge difference. The upgrade also kicks but in the 1st gen cars too.

How do you tell the difference between generations? The car I put it into was the Audi TT chassis.

Check out these threads:

http://tinyrc.com/forums/showthread....threadid=19779
http://www.gcrossett.com/zipzaps/catalog/cars/index.htm