ORIGINAL: airraptor
summer i think the 9x8 would be to much for that airplane with that engine. i run the 60LX on a fast 155+ airframe with the 9x8 and it takes almost a full lap for it to unload some. yes its still strong running but once it unloads it really shines. i would suggest a 9.5x7 APC or Bolly for that airframe and engine. specially at 8lbs.
actually the 56 is a torque busting machine.
have it on a Sundowner, and started with the 9x7 for a bit to give the engine some time....then put the 9x8 on it, and the the friggin thing now has a whistle
.........the engine is begging for a 9x9.
i thought that the 9x8 would not unload quickly either, but like Bob told me, the 56 long rod has more torque than the 60......he was right.
or are you saying the 56 is too much power for this plane?