Originally Posted by Razors edge 29
Anyone try UMP51 motor or know the piņon count? I think it's the same motor as sukhoi but I am not sure if piņon count is same as UMP51. But if it were would give the champ a little more juice coupled with GWS 543 prop and Hyperion batt.
I have a P-51 motor in my Champ. The stock motor failed relatively quickly on me. It was a drop-in replacement, fits perfectly. The power lead is a bit longer on the P-51 motor.
I don't have any way to accurately measure the exact thrust, but I'd say that it's in the 1:1 area.
I am using the stock prop and 160 mah Turnigy and Poweredge batteries.