Buying used brushed motors

[einkleburt]

Hi,

I'm not sure how but I've managed to spend 3 years on here without posting a thing! (And have been reading stuff for around 5 years)
I'm finally getting ready to start on a small electric motorcycle conversion. I've found a couple of used AGNI 95Rs for sale

If people have asked this question before, apologies and please could someone point me to the relevant thread.


Things that I know to look out for on used motors are: commutator condition, brush condition and bearing noises.
Is there anything else that I should be looked out for?

I've seen both motors running in person, while running on 12v with the motor placed on a flat surface there is a slight wobble which is i guess due to the motor being slightly out of balance, is this normal?

 

[amberwolf]

wobble can also be bent shaft. Sometimes that doesn't matter, or is lathe-able, sometimes it makes a motor unusable without shaft replacement.