Are you sure you have the correct props on each motor? Usually a backflip on takeoff means you have the props on wrong.
If it is a brand new (to you) quad, you should also make sure the motors are spinning the right direction.
Also try and take off and land from some nice soft grass until you get this figured out. Not fun buying props!
Please let us know how you resolved this issue.
Just had a crash and damaged propellers
Replaced with Master air screw upgrade
Installed new props
Now as soon as I attempt to lift off the ground solo does a back flip
Ruined another set of props
What's causing this?
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