Dear emgcr: I thought I had found all of the relevant posts, but clearly I had missed the motherload! Very very impressive, and thank you for sending this link. My Expert Junior is currently powered by the original Garrard 30 motor. My (pragmatic) plan has been to simply copy the existing spindle location and replicate it with the new motor board I shall fashion. This is easy to do compared to the considerable learning curve I would have to ascend to implement your formulae with the required tools (and I taught mathematics for a living!). Given that my existing setup sounds wonderful, I feel that a new setup with identical spindle placement should sound just as good. Today the yard is covered with a fresh cover of snow and there is no heat where my tools are, so this may wait until Spring (so to speak) to "power up" the project.emgcr wrote: Thu Jan 06, 2022 5:19 am Don, you may find this thread helpful when installing your new motor. In particular, use of the overlap tables is essential for optimised tracking :
viewtopic.php?f=11&t=15253&hilit=Questi ... nior+Motor
Thanks again for your valued input - very much appreciated.
Don