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Turntable weight affects speed

I tried a Thorens tt weight on my Thorens TD-850 belt-drive tt. It noticeably slowed it down.  It seems like extra weight on the bearing would affect any tt, but what do I know?  Is a speed control (and strobe/test pattern) generally required to use a turntable weight while maintaining the proper speed?

128x128lloydc
stringreen's avatar
stringreen
6,380 posts
 

...another take.....if your t/t is belt driven and getting on, the belt may have stretched.  

clearthinker's avatar
clearthinker
1,582 posts
 

@carlsbad2       And you.

lloydc's avatar
lloydc OP
737 posts
 

Thanks for all the well-considered responses!  I’m planning to try the Origin Live Gravity One @mgolpoor recommended. 

lloydc's avatar
lloydc OP
737 posts
 

And, to cover as many bases as possible, I’ll order a new belt. 

A new bearing/turntable… not today. 

lloydc's avatar
lloydc OP
737 posts
 

trying to be more diligent about updating threads.


Further research located an old review of this tt by M Fremer which said there is an internal potentiometer for adjusting speed.  It was not referenced in the manual. So I bought the RPM Pro app, opened up the power supply box, made some adjustments: problem solved.
  But went ahead and ordered a belt and OL tt “weight”.  The app said the wow and flutter was .25, a little higher than desirable. 

Thanks to Michael Fremer and all the ideas on this thread.

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