Originally Posted by beckerson1
I thought the P51 is the same size as the stock champ motor... just more powerful
I'm running the upgraded motor and bigger battery and get probably 20-30 min with moderate motor run... I've even had it glide (gaining altitude, trimmed a couple notches down) no power for 15 min right before a storm. Had to fully trim elevator down to get out of the inflow/updraft of the storm... All I got to do now is get a camera so I can get some amazing shots...
Hmm, getting quoted on this a bit and I fully admitt, I know little of the motor swap myself. Heard the P-51 motor is more powerful and slips right in more or less? Could be I read it wrong, might be a different UM motor. The more I think about it, the more I think my Champ will stay stock.