Here is a vid of the A-main of our Friday night races. VTA has quickly become the class to race at our track. We typically have enough cars every Friday to fill an A, B, C and D main events!
As you can see, it is rather small but we still have a lot of fun. Recently we changed to a RPM limit. Before we had used a FDR limit but due to motor differences there were still cars that could walk away from other cars.
We want this class to be as even as possible and slower than the other classes so we use a RPM measurement on the wheels to make sure each car does not exceed a set RPM limit. We have been doing it for a few weeks and it is working out nicely. The RPM fluctuates with motor temp a bit but not much. The Drivers really like it.