Vintage DD turntables. Are we living dangerously?

Do you trust the Victor engineers....?
I do 🤗
I've never lubricated mine.

I recently overhauled the engine of the TT-71 opened to check the pivot and the oil, I was surprised that after 40 years the pivot was perfect and without any signs while the oil was still as new; I wanted to replace the oil only for scruple.

The Technics SP10 MK II, on the other hand, always have a bad oil color that must necessarily be replaced and the pivots always have some stripes, I can't understand why.

In my research, I never came across a communication from Victor wherein they suggest that the bearing "never" would need service. This is in contrast to the Denon DP80, where Denon do warn customers to leave the bearing alone. (But I daresay they probably were not envisioning a 40+ year lifespan when that advisory was issued.) Anyway, when I had my TT101 motor apart, it was very easy to access the bearing well, and I did clean out the well and replace the lubricant with a single grade synthetic motor oil, the same brand and weight that are recommended on the L07D website for the Kenwood L07D. I kept the original bearing ball and thrust pad, as they exhibited very little sign of wear.

Chakster, Does the occasional noise that you hear seem to emanate from inside the motor?  Is it periodic in nature, which is to ask does it come and go with each revolution of the platter and at a faster rate when you are in 45 rpm mode?  If so, you might be hearing the rotor rubbing on either the underside of the top cover of the motor or the stator below the rotor.  (I am relying on my memory of the anatomy of the motor, which may or may not be accurate, but it's the rotor doing the rubbing, I think.) There is a fine adjustment of that spacing that is achieved by use of very thin copper shims, at the factory.  Under the bearing well, which you can access without taking the motor apart, you will find a slotted head cap.  You might try very gently turning that threaded cap up or down, and see whether it affects the noise.  That cap can be used to fine tune the spacing between the rotor and the stationary parts that reside above and below it. Slow and gentle is the word of the day.

@lewm   


I also happened to hear the noise of the engine of the TT-101 grumbling when it is running.
But turning the plate by hand without power supply, everything was silent ... I think it is only a problem of calibration or a bad power supply of the engine due to some electronic component out of tolerance.

• VICTOR CL-P2D PLINTH for 2 tonearms was quiet expensive in 1981, nearly 40 000 Yen in Japan. Must be OK ?

Double arm cabinet developed for TT series turntables.

The structure which laminated the beech wood and the high-density particle board which the vibration damping rate is very large is adopted alternately. The thickness of each material is determined by rigorous theoretical analysis, and a total of seven-layer sandwich structure is used to achieve no resonance and no vibration.

The surface is decorated with natural wood paste of rosewood.

The pickup board adopts a special laminated structure of beech wood, and is removable because it is fixed to the cabinet with bolts.
In addition, pickup boards were sold separately, and each arm could be replaced.

but i remember this thread too 

Speaking of Victor TT-101 plinths, three armboards 
CLD construction, threaded inserts for table and armboards.

https://systems.audiogon.com/systems/6622#&gid=1&pid=2