Garrard SP25 motor chatter

[Markoneswift]

Hey all, I'm working an old Fountain console fitted with the ubiquitous Garrard SP25 mk IV.

My question is, when the motor runs, it chatters quite a lot. This is obviously not right and having pulled the motor out I think I have found the problem. On top of the armature (the round bit that spins, correct terminology ?) there is a loose disc. I first thought it was a bush, or washer, but it looks like it should be attached to the top of the armature. As it is, it is free to rotate and rattle around.

Has anyone seen what I am describing on a Garrard motor ? I'm thinking of just glueing the disk to the armature, would this work OK ?

Cheers !

 

[jusmee]

Yes. The glue fails and the disc comes loose. On one I have, that disc has holes part-drilled into it - obviously how they balanced it. If you can use the old glue marks as a reference, you might stand a chance of glueing it back on it the right place to retain the correct balance.

 

[62vauxhall]

Yes, I experienced the same thing with a Garrard motor. Seems a "problem" with a heater/oven at the factory prevented the glue from curing properly. I tried re-gluing but failed although I've read forum posts from others who claim success. In my case, I did not take into account how close the tolerance was and did not center the ring properly - I should have been more patient and studied the situation more closely. Rather than try again because because by this time I'd ruined the original glue markings, I managed to find a used working motor for a reasonable price and installed that.

 

[Markoneswift]

 

[Markoneswift]

Oddly enough, I had a very similar issue with a direct drive Technics tape deck. I think it got dropped at some point and the counterweight (for want of a better description) fell off the capstan flywheel. This caused a noisy clattering which was resolved with some glue !