this has been bugging me for a few weeks now and im not sure if its a calibration issue or physical damage. basically i have a Ronin gimbal (the older SC not the SC2) mounted under a heavy hex and ever since i had a rough landing where one of the legs gave out and the whole thing tipped, the horizon keeps slowly creeping to the right during long shots. it doesnt snap or jerk it just like... drifts. maybe 3 or 4 degrees over like 30 seconds of flight and then kind of stabilizes before drifting again.

ive recalibrated the IMU twice following the DJI instructions exactly and it seems fine on the ground when im doing the calibration but once its in the air under load the drift comes back. motors all seem to be spinning, no obvious physical damage i can see, no bent roll axis or anything. payload is a Sony a6300 which is within spec.

not sure if i should just send it in or if theres something obvious im missing. anyone dealt with this kind of thing before

the slow drift under load after a physical impact is usually either a bent roll arm that looks fine visually but isnt, or the motor on that axis is slightly damaged and losing torque when it warms up. the fact that it kind of stabilizes and then drifts again is interesting ? that thermal behavior points more toward the motor to me. i'd try running it on the bench with a heat gun nearby and see if you can reproduce it without flying. if the drift shows up faster with heat then yeah probably the motor winding took a hit in that landing.

calibrating the IMU wont fix a mechanical problem unfortunately, people try that a lot but it really just sets the reference point it doesnt compensate for a weakened axis motor.

had something similar on a Zhiyun Crane after a drop, turned out one of the balance screws had shifted just slightly and the gimbal motor was fighting the imbalance constantly. worth double checking your a6300 balance fore-aft and side to side before assuming its internal damage. took me like two weeks to figure that out and i felt pretty dumb when i did