Axle Spacers Are Important
Beginners, and even some experienced racers, sometime forget that spacers are very important in setting up a good-running car. Lateral axle play is detrimental to a car's handling and is often the source of rattling noise coming out of the car when it runs. By eliminating lateral play, you'll also make sure that the tires won't touch the body wheel arches when the car is turning. Using low-cost axle spacers to remove that movement will surely help.
They're also very useful when you want to remove some friction between the bushing/bushing holder and the spur gear. By putting a very thin spacer between the two, the friction surface will be reduced and you'll get less resistance from the running gear. Don't forget that the same principles apply to the front axle, which is as important as the rear axle to get a good running car.
We have 5 different thicknesses for axle spacers, from 0.005" to 0.100". In steel, nylon or aluminum, they should be a part of every slotter's tool box. Get yours now.