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Re: Rubber Motor Insulators on Early Edison Standards
Posted: Sat Jun 04, 2016 11:04 am
by alang
Does Ron Sitko sell complete replacements for these screws and nuts?
Thanks
Andreas
Re: Rubber Motor Insulators on Early Edison Standards
Posted: Sat Jun 04, 2016 6:09 pm
by edisonphonoworks
These are a threaded brass grommet most likely moulded into the rubber when it was new, the modern washers will go over them. The bottom is a round circle, then a stem that goes up, the stem is threaded. put some rubber to protect the brass, and hold it with vice grips and unscrew the flat headed machine screw above. I would like to add that My early home made in March of 1897 has the same arrangement and that is how I removed them, the screw is steel and the threaded washer is brass.
Re: Rubber Motor Insulators on Early Edison Standards
Posted: Tue Jun 07, 2016 10:56 am
by stevenhman
I finally got mine out.
I had to destroy and remove all of the dry-rotted material between the bedplate and the motor assembly mount. After I did that I could finally get enough of the brass nut to be proud of the recessed pit the old grommet registered with. Used the smallest pair of needle nose vice grips from Lowes to latch on and unscrew them.
Re: Rubber Motor Insulators on Early Edison Standards
Posted: Mon Jun 13, 2016 11:03 pm
by tomb
I have wedged a screwdriver in there twisting it against the small shoulder for pressure and it has worked a few times. One bolt I just had to use needle nose vice grips on it and ruined it. They are round and no wrench will work. Plan B would be freezing then heating the nut. Use the screwdriver to wedge it again. Allow 24 hours in a freezer. Tom B