Tilting at take off after motor replacement

[Mikejackal]

Problem? I replaced the rear right leg after a crash, now when I try to take off the unit powers up the motors and then immediately after it begins to ascend the left side motors lift quicker than the right side and the unit aborts take off as the propellers touch ground.

Was unit in a crash? Yes

What have you tried so far? Replaced entire rear right motor arm, compass calibration, IMU calibration.

What device are you using ( iphone , ipad, Samsung , etc)? Samsung S9+ with remote

What firmware are you running ( aircraft, remote controller)? Latest

What Go app version are you using? Latest

Any modification? Replaced props with aftermarket parts

Did you change anything or install any apps? Yes see above

Do you have a video or pictures of the problem? Not currently but could if required.
Thank you all in advance for any help. The drone belongs to my work and although they've been very good about me crashing it in to a tree...I dont want to have to tell them its properly broken lol.

 

[Mossiback]

Are you sure the proper props are on the proper arms? You are not supposed to be able to mount them incorrectly but I have read where some have; causing the same problem you have.

At idle are all props blowing air down?

 

[Fly Dawg]

At idle are all props blowing air down?

Now that is a responce I have never seen. I don't think the opposite is possible unless you put the props on upside down, which is not possible. Well, maybe with some effort it may be.

 

[Mikejackal]

Are you sure the proper props are on the proper arms? You are not supposed to be able to mount them incorrectly but I have read where some have; causing the same problem you have.

At idle are all props blowing air down?

Yes I have checked, double checked and double double checked they are on the correct arms but I will certainly check again.
I have tried manually starting the motors using the remote control and they all seem to be spinning evenly, but as soon as I gently increase the speed to take off it begins to lean.
I will try and get a video tomorrow.

 

[Fly Dawg]

I will try and get a video tomorrow.

A video does not really help. You need to supply flight logs. Specifically the aircraft file for anyone to properly access what is going on with the aircraft. You could have a damaged motor, an ESC issue or any number of possibilities.

 

[Mikejackal]

A video does not really help. You need to supply flight logs. Specifically the aircraft file for anyone to properly access what is going on with the aircraft.

No problem I'll get right on it

 

[Mossiback]

Now that is a responce I have never seen. I don't think the opposite is possible unless you put the props on upside down, which is not possible. Well, maybe with some effort it may be.

You can't put them on upside down, but some have forced them on the wrong arms, which would push the air up instead of down.

 

[Mikejackal]

A video does not really help. You need to supply flight logs. Specifically the aircraft file for anyone to properly access what is going on with the aircraft. You could have a damaged motor, an ESC issue or any number of possibilities.

Is this what is needed?

 

[Fly Dawg]

but some have forced them on the wrong arms.

Seen that many times with P3's...Reversed threads...

 

[Fly Dawg]

s this what is needed?

No. We will need the aircraft .dat file from the aircraft itself. See the link below for instructions. You will need to upload that file to a sharable site such as dropbox, google drive etc and share a link back here if you wish to have it reviewed.

Retrieve a V3 Dat

 

[Mossiback]

Here is a similar thread where an IMU calibration fixed it.

 

[Mikejackal]

No. We will need the aircraft .dat file from the aircraft itself. See the link below for instructions. You will need to upload that file to a sharable site such as dropbox, google drive etc and share a link back here if you wish to have it reviewed.

Retrieve a V3 Dat

Ok great I'll do that, thanks for all your help. It's really appreciated.

 

[Fly Dawg]

Here is a similar thread where an IMU calibration fixed it.

That is quite possible, but you might want to know if that is the issue first.

 

[Mikejackal]

Here is a similar thread where an IMU calibration fixed it.

I've done it twice.

 

[Mossiback]

And here is a thread where aftermarket props were installed incorrectly on an Air, causing the same issue as the OP.

 

[Fly Dawg]

I've done it twice.

As I mentioned, quite possibly so. But would you not be interested to know what the issue actually is, prior to attempting to introduce a new variable in to the equation? It could possibly make things worse, depending on the actual problem.

 

[MadMaqx]

Sounds dumb you dont have wires reversed causing motor to turn opposite

 

[Fly Dawg]

Sounds dumb you dont have wires reversed causing motor to turn opposite

Where did that come from? I did not see anything here about motor wiring....?

 

[Mikejackal]

Sounds dumb you dont have wires reversed causing motor to turn opposite

I wouldnt put it passed me to have done that. I will retrieve the DAT file as Fly Dawg has suggested before I go taking it to bits again.

 

[Mikejackal]

Where did that come from? I did not see anything here about motor wiring....?

I replaced the entire rear right motor arm after the crash as the leg was broken in two. That involved soldering the new motor wires in place.