Whats the difference between stock and modified classes?
The stock class is meant to give all cars limited and approximately equal power at low cost and low technical sophistication. When these goals are met, the result is an interesting class of racing that’s more accessible to beginners. The cars are easier to drive because of the limited power, and with equal power the focus becomes setting up the car and driving clean lines. In the early days of racing, the Mabuchi 540 was the stock motor. If you ran a six-cell battery pack and a Mabuchi 540, you were legal for stock class. The Mabuchi 540 had limited power and was very easy to use — it did not allow much if any “tuning”. You would just bolt it in and run. Today’s stock class is not so simple. There are many stock motors to choose from, and these motors allow tuning through the replacement of brushes and springs. The motors are much more powerful than a Mabuchi 540 but have a correspondingly shorter life. And because of advancing technology driven by the economic competition between mot
