Sunday, June 8, 2008

Motor Cooling and how it affects your performance.

I personally find, with motor cooling in stock, you will notice a little more "kick' off the starting grid. This is slightly increased in pro-stock, but it also increases your acceleration and how efficient your motor is through the laps that it takes for your motor to warm up to the temperature that it would be usually at the start of the race. I find that while the motor is colder at the start of the race, that it is still the same temperature at the end of the race as it would be if it had not been cooled down. You might wonder why you should bother cooling your motor then, well, whilst motor cooling is Not required to run in stock or pro-stock, it does extend the life of your motor, by keeping the magnets cooler for longer. The heat from the brushes/commutator is slowly heating up the brushes and magnets and this can cause a motor to loose any competitive edge that it originally had, and cause it to lack acceleration.

A commercially available cooling solution is the Much More Thermo-electric Motor Cooler. Now, I am not recommending that you go out and spend $75-$150 dollars on this gadget. I personally have found that a home made alternative made using a 33w Peltier, motor clamp and heatsink to cool the peltier is just as good, if not better.

The only thing that you have to watch out for is that you do not allow ice crystals to form on the motor cooler, as this is to cold, and will actually decrease your performance. Condensation is perfectly alright, but when it begins to freeze the condensation it is to cold. I have found through testing, that a good voltage is 5v for the peltier, which stops it from getting to cold.

Now, you could either attach a voltage regulator to the Pelt, to get the 5v or you could convert a computer power supply to provide you with a dedicated supply for battery chargers and also the Pelt motor cooler.

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