Turntable speed accuracy

Use of a capstan, etc, or any strategy that increases the area of contact between the belt and the platter is a good way to combat "belt creep", the bete noir of belt-drive tt's. This is why I am skeptical about 2- and 3-motor arrangements; of necessity, the platter to belt contact area is reduced in both cases, even compared to conventional single-motor arrangements. This is also why I really like the Artemis SA1 turntable, in principle. (Never heard it.) It uses a single motor and a capstan so that the belt (looks like tape) is nearly completely in contact with the circumference of the platter.

Dare I say that a device like the KAB might be superior to the Timeline for detection of very transient deviations in speed? OK. I said it.

Halcro, I can't think of a reason for a bearing to provide drag in a turntable- that seems like a Bad Idea to me. Are you sure the bearing is OK?

What style bearing is in the Raven? I remember reading about it some time ago... something about it being oil-less or not having an oil reservoir or something like that. Halcro?

There are a couple of different bearings used in this table, the latest version being different and older versions not upgradable. Well you could but you would also need a new platter.

The bearing in the BK has what looks like a ball bearing on the top.

Dear Halcro: You always can try a different thread's build material and see/hear what happen.

regards and enjoy the music,
R.

Halcro - great game eh. Looks like Dokovich has shown the others how to beat Nadal - ie hard and flat if they can maintain it.

Re the bearing, it's a bit of a red herring - I only meant to communicate that in the case of the Final there is high inertia such that if the motor is turned off and the belt/thread is still connected the platter will drive the motor/pulley for a few seconds.

Lewm's capstan is a good observation, the thing that interested me was that if you add a capstan and get more belt/thread on the pulley & platter it will spread the side loading on the bearings of the motor & platter. This would potentially reduce motor bearing wear.