Repair motor hall sensor

[cwah]

As kuorider says it doesn't sound like a bearing noise but more like something is rubbing. Are the bearings seated properly and no spacers missed, perhaps overtighten something. I guess if you dismantle it again you may see rub marks. And be careful turning like you are doing you are twisting your cable.

I don't think it's wire rubbing because I have the same issue with my other motor and I've been ridding it for a month.... and I do around 700 miles per month so if it's a cable it would have been worn out already.

 

[Kuorider]

The wire is only rubbing because of your test method. Did you strip both motors? If so did you mark the casings so that they went back together in exactly the same place ? Did you remove the bearings and replace them exactly as fitted? Any shims or spacers lost? Shims are those paper thin washer like items you find sticking to the bench after the jobs done.
If both motors are making the noise there must a common factor. Strip them down and check carefully for witness marks on rotating parts and any metallic contamination of the magnets. Is the axle bent? Do you understand how to check for end float or run out errors? These are precision made components and you cannot just bash them apart and back together and expect no problems. The fault is in there somewhere and it will be obvious if you know how and where to look.
You do need a bit of 'feel' for this type of work and how to go about it. The cable would never be required to rotate inside the axle so why test it that way. If you have done 700 miles with the noise at least you can be certain that it is not causing any major damage.

 

[cwah]

The wire is only rubbing because of your test method. Did you strip both motors? If so did you mark the casings so that they went back together in exactly the same place ? Did you remove the bearings and replace them exactly as fitted? Any shims or spacers lost? Shims are those paper thin washer like items you find sticking to the bench after the jobs done.
If both motors are making the noise there must a common factor. Strip them down and check carefully for witness marks on rotating parts and any metallic contamination of the magnets. Is the axle bent? Do you understand how to check for end float or run out errors? These are precision made components and you cannot just bash them apart and back together and expect no problems. The fault is in there somewhere and it will be obvious if you know how and where to look.
You do need a bit of 'feel' for this type of work and how to go about it. The cable would never be required to rotate inside the axle so why test it that way. If you have done 700 miles with the noise at least you can be certain that it is not causing any major damage.

I opened both motor and did a core swapping because one of the motor had a failed hall sensor and I needed it to run. I don't think I've missed anything otherwise it wouldn't work properly.

Axle isn't bent and I don't know how to check for end flat or check out for error.

Is there some step by step tutorial for identifying different motor faults? I found one for the hall sensor and fixed it but now I have another problem!

 

[anotherkiwi]

You mean you put the axle of one motor in the bearings of another when you swapped the core over? That is never going to be a good idea if they don't have the same wear.

 

[cwah]

Thinking again I may have done that. I should probably have moved the cover at the same time.... but i was concerned on not to have a proper fit if cover is different to the wheelbase