Thorens drive platter question

[hezagenius]

Is the drive platter for a Thorens 125 MKII the same as the drive platter for any other Thorens model? I'm shipping my TT off to get serviced and can't find the drive platter anywhere. I'm not sure there ever was one when I bought it on the Bay and it's been in storage for 2 years. Maybe I misplaced it when I took the outer platter off but I'm assuming I don't have one at this point...grrr. Can I scavenge the drive platter from another Thorens model? That might make finding the piece online easier.

Also, is the spindle in the drive platter or is there some other piece inside the drive platter that contains the spindle?

Thanks

 

[elcoholic]

Doubtful it'll interchange with anything other than a TD 125 mk l. The spindle is part of the subplatjer. The servicer should know.

 

[hezagenius]

I put a drive platter from my 160 in and it fits but I have no idea if the dimensions are the same as the original. The outer platter fits over it like it seems it should. I sent an email to the servicer to be sure.

 

[elcoholic]

My concern would be for the spindle and bearing fit.

 

[tnsilver]

Yes, just checked to verify. The sub-platters of the 125 and early 160's are identical right down to the recessed rim designed to fit the 125 strobe disk.
The 10mm bearings on both are press fit and the TD-125 bearing shaft (with the bearing ball) can be transferred to a 160 sub-platter.

 

[GuyK]

According to this: http://www.theanalogdept.com/td_platter_bearings.htm, late production TD 125 mkII used the same bearing housing as the early TD 160, and it allowed use of the same shaft for both. However, the strobe ring is part of the pitch control system on the 125. So while an assembly from a 160 may physically fit otherwise, the pitch control may not operate correctly.

 

[GuyK]

Good to know. I'm not overly familiar with the 125, and didn't know if the strobe was part of some self-correcting speed mechanism.