The airplane was designed for a Rotax 277 that is about 20lbs heavier than the F33. The F33 is light, maybe too light, need to be careful that you don't end up tail heavy. Don't add anything behind the CG like a BRS or strobe. At idle, the F33 vibrates horribly, smooths out from about 3000 RPM and up. Watch the EIS to get a sense for the vibration: https://youtu.be/vdeP8E3ZZQ8Not flown it yet so can't really comment on performance. |