Turntable speed accuracy

Ketchup: "Hiho, I'm not sure how to take that."

Sorry, Ketchup. Your post was legit but cynicism got the better of me. My initial reaction was that we audiophiles really like to flatter ourselves and why would any Japanese engineers who worked for these corporate giants would waste time on a forum like this and most of them likely not fluent in English, which Lespier alluded to. Knowing how engineers sneer at and dismiss audiophiles, and I knew quite a few, I am skeptical they would ever respond to forums like this. Again, your post and question was totally legitimate and I sure hope we will get a response from these pioneering engineers one day.

______

Albert Porter/Halcro
Bit slow today, so I had a drink, Steinlager Pure Blond, much clearer now. Cheers...

I actually re-heated my morning coffee by placing it squarely in line with a laser beam from the Timeline whilst it was rotating on my Mk3 which was playing a Wagnerian opera using an old Decca spherical stylus cartridge that tracks at 4 gm..... Just kidding about the Wagner. I hold with Mark Twain who said, "Wagner is not as bad as it sounds". (Well, I mentioned cognac, did I not?)

But I now understand Henry more fully.

Sometimes there is simply no substitute for the ears?
I had recently switched from the original rubber belt of the Raven AC-2.....to a thread drive.
There was little difference in the speed consistency as shown by the Timeline......but initially....to my ears.....there seemed to be an improvement in the sound?
Yesterday.....I was sitting back comfortably listening to the ballet music fom Le Cid by Massenet conducted by Louis Fremaux on Klavier Records.
In the third movement 'Catalane-Madriene'......when the French horn and the flute begin their delicate interplay........I could clearly hear some 'wow'...particularly with the flute warbling rather frighteningly?
I quickly switched the disc to the Victor TT-101 where there was nothing but pure joyous breathy consistency.
So I placed the Timeline on the Raven and saw that it appeared as consistent as it previously had.
I replayed the Madriene and re-heard the 'warble'.
I switched the rubber belt back in and re-set the speed according to the Timeline.
No more 'warble'.......?
If anyone has some theory to explain this phenomenon........I would love to hear it?
For the moment......the belt is back on the Raven......but my trust is firmly with the TT-101 :^)

Dear Halcro, the mass is not enough for the thread to work properly. You must add a flywheel. The grip of the belt beats it's elasticity in this particular arrangement and it would be even better if you can manage to put a capstan at the pulling side of the motor in order to increase this characteristic once your set-up is better served by this grip than the thead's slippage. I've witnessed the same action by placing a thread on my 24 kgr platter. Here the reason was not only the improper mass but also the very weak motor. And the limited acceptance of a round belt only, left me without opportunities to fix anything. (Not that I care any more about that TT. I'm only sharing some tweeks of the past). Perhaps Daniel can share his experience ?