i have a plane with the onboard telemetry including an optical RPm sensor. problem is that its junk and does not provide accurate readings. Now that I think about it, perhaps it is not accurate, but its just of X amount. thus I could compare the inaccurate number on the bench to the number in the air. my first guess is that its junk and no readings can be trusted. I have the RX/telemetry setup made by FRSKY, does anyone have this setup and get good readings?
Originally Posted by
Pete Bergstrom
Most propellers will unload 7-10% once in the air. I've seen a few instances of higher unloading but not many. And this is referring to straight and level flight. In a dive the props will unload even more.
I usually recommend that you prop your engine for max rpm in the high 8000's on the ground ... it seems to me that the torque of the Saitos does occur at lower rpms and operating at the height of the torque curve suits most everyone's flying needs (except the racers)
Pete