hitec 645mg for t3, speed or torque?

[racin4ever]

i heard that the 645mg fits in the t3...is that right?? what is the diff between speed and torque?? which one is better for racing? :confused:

[Spinner]

speed is how long it takes the servo to fully turn from one end to the other, faster is better.... TORQUE in a SIMPLE sense is how much power the servo has to TURN the tires... or whatever it is being used to turn..... you want AT LEAST 90 oz/inches of torque for racing..... with UNDER .18 sec transit time.... Physics book says torque is the measure of anything's ability to move a rotational body....... in this case a servo shaft, engines, the crankshaft, etc etc etc

[racin4ever]

thanx spinner :p