@lewm
I tend to agree with your line of thinking. The idler wheel in my mind, should act as an efficient energy transmitter, not an energy sink. Added mass might stabilize rotation to a degree, but it could also alter the system’s delicate balance of torque, compliance, and transient behavior. The Garrard’s magic, after all, lies in its immediacy and drive, now I wouldn’t want to blunt these ‘signature’ qualities with unnecessary inertia.
I’ve been reading up reports about external motor controllers improving pitch stability and resolving low-level detail, not necessarily through lowering noise but by tightening the grip on speed constancy, as you said. Once my Bastion plate is in and I have a baseline, I might experiment with the LDA or similar controller in near future just to see if that added precision enhances the musical flow or if it subtly tames some of that idler vitality we love so much. Sometimes, refinement can come at the cost of excitement, it all comes down to end user personal preferences.
The stock idler wheel is only about a year old, and these are built to last virtually forever. Once the AF idler wheel becomes available, I plan to do a side-by-side comparison. It’s one of those “try it and hear for yourself” pursuits that keeps this hobby endlessly fascinating. For now, I’m happy to just sit back and enjoy the music…with the holidays around the corner, there’ll be plenty of records spinning and good times all around 🎶