Turntable speed accuracy

Dover,

In all fairness the stainless steel arm board seems a logical upgrade. I think the hugely (is that a word?) larger format of the new NVS required a more rigid arm board material.

The original NVS could not accept 12" arms, at least not SME or other that require a large footprint.

Changing the "format' of the tonearm mount required the factory to rethink the mounting material to something more rigid than wood.

I'm not criticizing your post, the change was indeed made by the NVS people. I'm just saying that sometimes a redesign to accommodate a new arm length requires a rethink of material design to maintain stability.

Glad to see this thread revived.
I too was dissapointed when the NVS thread was pulled but here I'm more interested in how some touted belt drives(SME, Basis, Verdier, Micro Seiki etc)have fared when tested with the timeline.
Perhaps the silence is telling us something.

Albert - I love more new tt's coming to the market. It just seems the hyperbole doesn't match the performance. In this case the claims made for energy dissipation in the design seemed at odds with using wooden arms and armboards. I'm not sure stainless is that great either, but as you will have experienced most arms have resonances and different armboard materials will sound different and either add to or subtract complementary resonances.
Most often ignored in these forums is that the turntable/arm/cartridge form one system and ideally the 3 components must have a common purpose in structural design - either dissipate energy or sink it to ground. Turntable, Cartridge or tonearm comparisons should always be referenced or qualified by the other 2 components but seldom are.
Back to the NVS, the optimum arm board material will vary depending on the material used in the arm/arm mount and the material used in the NVS frame to ensure minimal energy is reflected back to the cartridge/record interface at each junction.

Perhaps the silence is telling us something

It may well be?
Whilst we have heard anecdotal evidence that some belt-drive turntables......for instance the big Micro Seikis....can maintain consistent accurate speed according to the Timeline.......I have never seen any visual evidence (via YouTube?) of this?
If anyone can post a clip of ANY belt-drive TT able to do this with cartridge playing and not playing......it would put to bed any doubts?

Lespier,
I run the Final Audio Parthenon ( heavy patter/thread drive/AC motor with reconstructed sine/cosine wave power supply ). Just waiting for the 1st shipment of Timelines to arrive in New Zealand. I'm not losing any sleep, my references for speed accuracy -KAB,Test Record, solo piano stability of notes, and using Digital Sources as a comparison are fairly comprehensive. Oh and forgot I have Technics SP10 Mk3 for comparison as well ( Still not losing sleep ).