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					Originally Posted by  RoadFlyer
					 
				 
				I just put one of these into my Knight Hauler.  Tried it first with a RC4WD 80 turn modified Crawler motor...a little too slow.  Next put the original 540 Tamiya motor that came with K.H...runs great.  I've got 2 speeds instead of the stock 3 speeds.  These planetary gears are much quieter than the stock 3 speed Tamiya transmission and a lot smother.  I would recommend this as a must do for all the Tamiya truck line. 
  
			
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 Your recommendation is enough for me. I just ordered a 1:14 version to put in the KH I have.