I managed to do a few test flights on my Compass 3D+ today. Its a 50 sized nitro helicopterBlades Compass Carbon 620mm
Tail blades: KBDD
Engine: Os50 Hyper
Plug: OS8
Fuel: Model Techics Coptermix 20%
Exhaust: GP Exhaust.
Flybarless unit: HC3SX
This heli had an "arrival" with terra firma about....maybe 18 months ago. Broke blades, skids, servo tray, boom. I finally sat down and finished the repair.
It was a great day for a maiden. 26 degress. Light wind. I managed to tune the engine and set the throttle hold position.
I had 5 flights of 10 minutes each.
Awesome fun. I have been flying electric for so long...I missed the nitro. The exhaust smoke alone is worth the extra work