| Lets Identify Specific areas of friction on the axels of the pinewood derby car. As your car moves down the track, friction between the axels and the wheels slow down your car. Of course EVERYONE uses graphite to reduce friction, but if you want the fastest car possible, you need to take it a step further! And we show exactly HOW TO DO THIS! As you can see the largest friction area is the axel shaft it’self, the other area we can work on is the inner nail head. Since the axel shaft is the largest contributor to friction, a change here would do the most good. First, look at your axels and find the small raised grooves. Now because these are “NAILS” and not perfectly machined axels, they are not really round and also have all sorts of imperfections due to the process of making the nails. | ![]() |
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When your car is moving the wheels can also cause friction similar to a caliper brake on a bicycle. The inner side of your pinewood derby wheel causes braking action when it rubs against the body of the car. We have already reduced this ‘torque braking’ on the outer side of the wheel by modifying the inner nail head of the axel so now lets focus on how to reduce this braking action against the body. The solution is similar : reduce the area and we will reduce the friction. Since you can't eliminate the wheel from hitting the body a few times when your car moves down the track, lets’ minimize the friction impact on the area that will actually rub against the body by reducing it’s size. This is the science of speed. But everyone pretty much knows this stuff. In the VIDEO, We go Way beyond this - - We Show you WHAT OTHERS DO NOT KNOW. For example, by using our advanced wheel Techniques, we show you exactly how you can |