Originally posted by t3guy
If triple and quad aren't as "torquey" as single and double, why do people use em in cars?
First you have to understand that total horsepower that motor produces is torque multiplied by RPM. When you tune motors you usually lower torque to raise RPM, if you raise RPM more than you lower the torque you'll get more powerful motor. Then you gear the motor to have peak power at middle of the straight at normal track. What few people realize is that the same motor needs different gearing when you change the tuning.
Singles, doubles, triples or quads? It doesn't really matter. It's the total diameter (gauge) of all wires on the armature that decides how much torque you get for any given turn. The higher number of wires you use for any given total diameter the more compact the winding (less airgap between wires) becomes and easier to wind up to a point.
The more wire (mass) you put in a motor, you increase torque but add weight. You've got to think about physical limitations too, not just electrical. By adding weight you reduce efficiency and increase spool up time.
Hope this helps