Quadcopter Question

[Stephen1]

I build the FT Versacopter 2.0 awhile ago and I'm having some trouble. I'm running emax 2250 red bottom motors on 5x4 tri blade props with 30A luminer ESCs off of a 2250 4s battery and a graupner radio. Whenever I start the motors for take off, they stutter for a moment, then start spinning normally. This in itself isn't a problem, but I've recently tried some minor aerobatics and when I cut any motors mid air, they rarely start properly, resulting in a crash. Also, sometimes the motors just cut off without warning, so I'm afraid to fly the quad too hard. Any advice to fix this is appreciated.

 

[French]

What flight controller are you using? What firmware (cleanflight, betaflight, etc) do you have flashed to the flight controller?

You have a min throttle issue. It needs to be increased to a value where the motors spin. You also could likely benefit from turning on “air mode,” which give you control even at zero throttle.

 

[Stephen1]

Thanks for responding!
I'm using the graupner gr-18 receiver/control board, but I don't know much about firmware. I would assume its whatever the receiver came with. Sorry, I'm not much help in that area (I'm new to this ) And I'm interested in air mode if you might be able to give me any more information on that. Thanks!

 

[French]

Looks like you need to go into the settings (on the radio) and raise the “minpower %.” I’d start with 1 or 2% (go to 11 or 12%) and test it out. I wouldn’t want to go more than 15%.


From this manual - https://cdn.billiger.com/dynimg/0R3...ight-9CH-S1019-Bedienungsanleitung-042a22.pdf

Air mode may not be an issue with the Graupner.

 

[JimCR120]

Is it just one motor doing this? If so, is it always the same motor?