loss of power and control when giving cyclic input

[Kcnt]

I'm stumped with this problem. When I give my X7 any moderate cyclic input like starting a flip or roll the main blades slow dramatically resulting a a very brief loss of control. You can hear the main blades take a drastic change in pitch and slow. I have run the Ikon gov and the castle gov. I have also tried 2 different ESCs (CC160 and CC120) and 2 differenct motors both Scorpion 4525. I have also completely reassembled the main rotor head looking for any mistakes. It is tight with no play at all.

After reading the forum I'm thinking the OWB may be slipping. I'm not convinced this is the case becuase it only happens with cyclic input. No problems at all with full positive or negitive collective pitch.

I will try to attach a video. (not great quality)

X7 (0 min 34 sec)

Any help or advice would be greatly appreciated.

[jmrcracer]

swash plate binding comes to mind. i could be wrong.

[Swooper6]

What's your throttle curve set like if I may ask?

[Kcnt]

70% all the way across

[Eric Valeriano]

Seems like the problem is not the motor or the ESC. Ever tried to change the flybarless system?

[Kcnt]

I have tried 2 different ikons with the same result. I believe I have found the culprit. It appears a servo is going bad. The replacement is on its way. I will post the results.

[gtruk]

If you've changed the motor and other electronics, it sounds like the OWB is slipping to me and isn't uncommon if you haven't done the mod.

[Kcnt]

It was a cyclic servo going bad. It worked fine on the bench but would give out under load. I didn't see any gears stripped so I decided to replace it. Now working great.

Thanks for all the help.

[btheli]

Thanks for updating us. I would not have guessed this given your comment that "the main blades slow dramatically." Any explanation for that?