Turntable speed accuracy

Halcro have you tried the timeline with your TT81?

Unfortunately I didn't have the Timeline when I had the TT-81 set-up.
Now it is too much of a hassle to remove the TT-101..... Install the TT-81....and then re-install the TT-81? Sorry :^)

One red herring: the LP is sitting on a Boston Audio Mat1, which is kind of slippery; the LP itself could be sliding due to stylus drag. I hate when that happens. I hate record weights.

Lew.......please remove the mat. Slippage can be a real problem?

Thanks Halcro, was just wondering by chance. Dang Lew that was fast, look forward to future comments you may have.

Have our monthly club meeting this week, have to ask the guys if anyone has a timeline. If not might have to break down just for kicks since I am love tools of the trad :).

I would love to know the results of using a Timeline on a massive platter, belt driven turntable like the Walker. Maybe it's a touch fast or a touch slow (which will show up as "cumulative error"), but I find it hard to believe that a 70 pound platter will be affected by even the greatest amount of stylus drag. Of course you would have to set the timeline on top or the Walker record clamp to compare apples to apples.

This makes me think. When testing your tables with the Timeline with the stylus in the groove, and you see what appears to be a slightly slow speed, how in the world do you know that it's not just the LP slipping on the platter? It seems like you would need to make sure that the record is mechanically clamped to the platter for the results to mean anything. And I'm not just talking about a little record weight. I'm talking about a several pound weight or a clamp that threads or clamps onto the platter spindle.

To put it another way... You test your TT with the Timeline on the platter with no LP and it maintains perfect speed. You then test your TT with an LP and the stylus in the groove and the Timeline says that your TT is slow, which makes you think it's due to stylus drag. That seemingly "slow" result could simply be because of the LP slipping on the platter, not the platter slowing down due to the stylus drag.

Ketchup: " That seemingly "slow" result could simply be because of the LP slipping on the platter, not the platter slowing down due to the stylus drag."

That's easy to figure out. Simply stick a piece of tape with, say, a pencil mark on the edge of the record line up with another mark on the platter and then check their alignment after the speed test to see for any drift or slippage. This was proposed by a smart forum member (Dertonarm) before.

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