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Just received a ROK B12H and put it into a rudimentary plinth. Ran it for about 12 hours and it is running a little slow. I tried to loosen the locknut under the speed controller, but it does not affect the speed adjustment. Few questions:1. How do you adjust the speed on this unit?
2. Which is the best oil (brand/type) to put into the well for the spindle?
3. Which is the best oil (brand/type) to lubricate the motor through the little ports?
4. The motor runs a lot louder than my Garrad 401. Is this to be expected or am i looking at a rebuild?First impressions are that it has the potential to be nice deck, but it seems to not be in the same league as the 401.
Follow Ups:
The screw at the base allows you to generate the amount of pressure applied to the idler wheel.I am not sure how to set it, but I would back it out and then try 1/4 turns until you get steady speed with the least idler resonance.
The nut under the on off switch is critical to adjusting the fine speed. Again you have to play with this since I do not know where to start.
I will say that the degree of noise on my B12GH makes me think the LP=34 would be a quieter all around turntable. Plus the custom plinth would dramatically reduce the amount of resonance from the motor since you would not have that aluminum platten to deal with.
Mosin might have some pointers for how to get the Pabst as silent as possible. It is one fine motor.
Had the same problem w/L34 and was working on it this morning. I ended up taking the motor apart and cleaning it. The bushing on the lower motor cover was really caked with semi-solid oil/gunk. I also cleaned and lubed the idler wheel bushings. Now it seems dead on for speed. The oil I used for all of it was tri-flow, including spindle well.
I completely disassembled my LP-743 motor and polished the motors shaft. Then used some clean oil and put it all together.It was still speed challenged. I ended up having to buy a transformer based power regenerator. This was cheap...99 bucks for a PowerVar 5.0.
Thanks ScottRT for that suggestion by the way.
My apartments electric was dragging the thing around. Now it is as steady as a quartz clock.
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