Teres turntable motor problems

I'd contact Thom at Galibier; he and Chris and Peter from Redpoint worked together prototyping those early tables, and knows a lot about their design .  More than likely there's an issue with the control electronics for the motor/sensor assembly.  Thom can work with you to upgrade your motor to one of his, which integrates the controller into the motor itself (no more external sensor).  You'd get a new belt in the process as well.

Good idea to work with Thom at Galibier. I also wonder whether you could adapt the SOTA Eclipse motor system to the Teres. But it’s always easy to suggest a costly remedy for what might be a problem with an inexpensive solution.

I sent an email to Thom, thanks for the suggestion.  Has anyone used the Sota total eclipse system on a non-sota table?  The Sota is $1500, the Galibier is $2745, I can't imagine a solution from VPI could be any cheaper.... 

I am using the antecedent Phoenix Engineering system, which is the Eclipse minus the motor, on my Lenco, very happily, as are many others. The only concern would be whether you can fit the Hall sensor that monitors platter speed, in between the bottom of your platter and the underlying plinth. SOTA can probably tell you how much space you need. 

Hi,  thanks for the response.  I built my table base, so i will be comfortable machining it a bit if need be.  I think from looking as the Sota info, that the magnet should fit though.  I have a 12.25" dia platter and the Sota's are different.  Do you know how the magnet (on the platter) placement is accounted for?  Do you just adjust on the "box".  I guess i am confused as how 33.33rpm, etc is nailed down, if the magnet is just placed.  i understand once it is nailed down that drift/variance will be shown.  Hope that is clear, thanks