Cyclone S Tips: Stock Racing. The Right Gear ratio for the job.

The point of the stock class is to create a touring car class, with cheap batteries and motors so that newbies can get into the hobby cheaply. It is a class that has grown astronomically and has been the strongest class at the National On-Road Champs for several years now.

The gear ratio is very important. When running in stock, you want a good compromise with speed and battery drain. With out the right ratio, your car may be slow, or you may not be able to finish the race. A good ratio to start at would be 4.5 final drive. This in a Cyclone S would equal a 90 tooth spur and a 49 tooth pinion. If you want to get down to 4.3 which is approximately what is being run at WRCCC you will need a 51 tooth pinion to 90 tooth spur. Of course there are many other ways of getting to this ratio, but this is the most efficient one as it is using the biggest pinion.

A gear ratio can make or break your race, and if you do not have a heatsink or heatsink fan, you may end up with an inefficient motor, drawing more current as it gets hotter and hotter. Another way to get around this is to use a thermal electric motor cooler to cool the motor prior to the race.