1. huntnyou Said,

   electric motors don't use "watts" they use Volts & amps. look up the conversion formual on line if you want to convert volts into watts.
   References :

2. Robert Livingston Said,

   Volts multlplied time amps equals watts.

   If you give a motor 12 volts, and it draws 1 amp, it is absorbing 12 watts.

   The power output is about half of the power input. A motor that requires 12 watts of electrical energy to run at full power may develop (or put out) 6 watts of mechanical power.

   The power output of a slot car motor is described here:
   http://slotcarnews.blogspot.com/2007/02/slot-car-news-motor-list.html

   Have fun!

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