do we need a spike relay for our motors? we do not need speed control, but do we need them?
The answer is: You need either a speed controller or a relay (or a VEX motor controller) to control a motor ([R51]). See [R52] for what you may use with each motor.
You need to use either a spike, jaguar,victor,or talon to contol a motor. You cant just wire it into the power distrabution board.