BG223217423 Yes, you should verify that all screws and bolts are properly secured on all new helicopters! They don't have to be excessively tight, remember how small they are. Also, a visual inspection should be conducted prior to every flight. On this helicopter, I found the head to be loose on the main shaft. The Jesus bolt is undersized, allowing the head to rotate back and forth on the shaft. The Jesus bolt does not clamp the head to the shaft, the Rocker bolts clamp the head to the shaft, and they were loose on my new F280. Tightening the Rocker bolts slightly properly secured the head to the shaft.

BG223217423 Channel 5 should be used to select between 6G and 3D, Channel 7 should be used for throttle hold.

BG223217423 Many parts are available including main shaft and spindles, search E150 and everything will populate.

BG223217423 If you mean feathering shaft, here it is.. https://www.banggood.com/Eachine-E150-Horizontal-Axis-Set-RC-Helicopter-Spare-Parts-p-1978363.html?cur_warehouse=CN&ID=6321741&rmmds=search. Just search E150 on the banggood site and all parts will be shown.

BG223217423 Yes, this has Optical Flow (position hold). It also has Altitude Hold (barometer). Optical Flow on this copter is not real precise and will deactivate with any stick input. Altitude Hold however, works extremely well and is considered more valuable than Optical Flow.

BG223217423 Yes, this has Optical Flow (position hold). It also has Altitude Hold (barometer). Optical Flow on this copter is not real precise and will deactivate with any stick input. Altitude Hold however, works extremely well and is considered more valuable than Optical Flow.