1950 Recordon renovation part 2 - Turntable drive idler wheel restoration
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- Опубликовано: 27 авг 2024
- The turntable idler wheel or roller rubber surface was very hard, with a glazed and cracked appearance.
This video shows a test of the material with "RRR" rubber roller restorer, which had no noticeable effect on the glaze at that stage.
I sanded off the glaze using a technique I found in some online articles, making a spindle to drive the idler wheel then spinning it against extremely fine abrasive on a hard backing surface.
That seemed to have the desired effect and the new surface felt like rubber, though still very hard.
After recording the video, I sprayed the roller with RRR again, using the plastic box lid to contain as I did early in the video. I kept it covered to minimise evaporation and re-sprayed it a few times over a couple of hours, turning it over so it got similar exposure at both sides.
I then dried it off and left it for a day so the restorer could penetrate evenly through the bulk of the rubber.
It worked - the idler wheel has a much better surface, and as you can see in the "Reassembly" video, it now works perfectly with a very positive drive to the turntable.
RRR Spray is available from Electrolube, CPC, Amazon etc.
Brilliant!
Thank you
I sent an idler wheel for an (then) unknown brand turntable to Russell Industries in NY for rebuilding.They are nice people.A RUclips man kindly put me onto them.
Doesn’t this change the speed of the platter if you shave down the idler wheel?
No, as long as it's still perfectly round, the speed is not affected. Think of it as transferring the surface speed of the motor drive "pulley" wheel to the inside of the turntable; as long as the idler does not slip or stick, it makes no difference if it is small or large.
@@RJTC Huh? I didn’t know that. Sometime I will sand off a little rubber of an older idler. Just getting the “shine” off. I’ve always been concerned about taking too much off. Thx for the clarification. Ric