Gimbal wobble horizontally after crash

hiruko · Oct 24, 2017

Hi!.. I crashed my phantom 4 a while ago. I had to replace the whole shell, the yaw arm and it now flies properly except for the fact that the gimbal has a horizontal wobble.

Does anyone know how to fix this?

ryantrax · Oct 24, 2017

Were the vibration absorbers still installed on the gimbal? looks like one or more of them are lose or missing. (see the black bands in the picture below)

phantom-4-vibration-absorbers-set-part-32-cp-pt-000367-dji-aa1.jpg

hiruko · Oct 24, 2017

ryantrax said:
Were the vibration absorbers still installed on the gimbal? looks like one or more of them are lose or missing. (see the black bands in the picture below)

Thanks for the response. Yes, the absorbers are in place, it looks more like a motor issue to me but I'm not sure..

ryantrax · Oct 24, 2017

hiruko said:
Thanks for the response. Yes, the absorbers are in place, it looks more like a motor issue to me but I'm not sure..

That very well could be, are the ribbon cables ok and firmly seated? The yaw motor may not be getting power.

hiruko · Oct 24, 2017

ryantrax said:
That very well could be, are the ribbon cables ok and firmly seated? The yaw motor may not be getting power.

After reassembly they seemed ok. When the aircraft is on that motor gets very hot.. Do you think I should replace it? Do you by any chance know where I could get a replacement?

ryantrax · Oct 24, 2017

I've found eBay is the best place, here is one, from China though: Roll Yaw Patch Arm Motor Replacement Repair Kit for DJI Phantom 3 4 PRO P4P | eBay

hiruko · Oct 24, 2017

ryantrax said:
I've found eBay is the best place, here is one, from China though: Roll Yaw Patch Arm Motor Replacement Repair Kit for DJI Phantom 3 4 PRO P4P | eBay

Thank you very much!

Droneted · Oct 25, 2017

If you are going to replace the yaw motor be sure to reuse the motor casing off the old motor. It has magnets matched to the yaw sensor. I put up a video that tells why and how.

Droneted · Oct 25, 2017

hiruko · Oct 25, 2017

Ted4797 said:
If you are going to replace the yaw motor be sure to reuse the motor casing off the old motor. It has magnets matched to the yaw sensor. I put up a video that tells why and how.

Thank you, I sure will.

PowellSkier · Oct 27, 2017

FYI update.
This camera is a used one I purchased to put on the drone you sold me off of eBay. The previous owner was having yaw problems as well and installed a new yaw motor. He also sent me the old motor with the housing already removed which makes me think he already swapped them as shown in your video. I just sent an eBay message to him asking about this.
Do you have any close-up pics of the damage done to the motor demonstrated in the video you posted? I'm not seeing any damage to the motor he sent me except for what appears to be tool marks from when he removed the housing. Other than that I see no damage to the camera, cables or housing. Nothing is bent and everything moves freely.

I honestly appreciate your help and advice. I have been a long-time tinkerer myself, but this is the first drone that I have owned.

Mike

Droneted · Oct 27, 2017

It could be that the motor he bought was used and also damaged. Even when they say "new" they may not be. They take them from crashed drones. Everyone has to be checked.