So I got it running really well and spent some of the day putting it all together. Here is a picture. ?A few more loose ends to tie up and I will be ready to make something. Thanks to everyone who helped with the motor issues
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On Apr 20, 2020, at 12:12 PM, David Rutter via groups.io <mr.rutter@...> wrote:
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There is some play laterally along the rotor. ?When I spin it by hand you can feel it dragging in the bushings. I should be able to spin it by hand and it keep going but it isn¡¯t that loose. ?I am going to look for the oil or possibly a new set of bushings for it and see if it will run perfectly. ?This motor has been in pieces for 50 years so I am not surprised it isn¡¯t smooth, but I was amazed i could get it running at all. ?Still a work in progress but it¡¯s coming back to life for sure!
Thanks
Dave
On Apr 20, 2020, at 12:07 PM, Neil Morrison <neilsmorr@...> wrote:
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As has been suggested, these are probably Porite bearings. Ideally you should use the special oil for these. If you have a business that is local and repairs sewing machines they may have this oil for sale.
They can advise you about the motor and bearings. The bearings are spherical and should automatically align themselves.
Possibly there isn't enough lateral movement in the rotor. I'd expect a little play there, something like 1/64" forward and backwards (along the direction of the shaft).
On Mon, Apr 20, 2020 at 6:25 AM David Rutter via <mr.rutter=
[email protected]> wrote:
So I got the little motor running. It is a little tight in the bushings though. I know that the rotor should be very loose and able to spin easily by hand. I can spin it but it is not as free as an induction motor should be.
I was going to pull the motor back apart now that I know I can get it running and add a fine lapping compound to the bushings/rotor ends and put it back together and let it run in to see if I am get it free spinning as it should.
Any other suggestions???
