I have a question for Jean.
Now that we've come to the situation where various sytems of drive have been used and accomplished significant performance levels, what do you think is the best one?
We now have a market which will bear any amount of engineering and production cost, because of the market for very expensive turntables. There is no need to worry about how much it costs now, for the high end units.
An idler wheel system of excellent construction and engineering could easily now be made without regard to expense. Direct drives and belt drives of very high retail price are being sold to audiophiles. In fact, as regards idler wheel tables, I think Shindo Labs and Lorricraft are even re-making the old Garrard designs.
In the "ultimate" expression of these drive systems, with all "the bugs" ironed out of most of them, what do you think will be the best performing turntable? At the highest levels, will the idler wheel compete with the best direct drive(Rockport) and the best belt drives(Walker, et al)? With all things considered.
What are your technical reasons for your answer?
This is an important question, and I'd be very interested in the answer from someone with much idler wheel experience.
Please bear in mind that these top level turntables have gone to an extreme extent themselves to ensure total speed stability, with no expense spared, and the designers are well aware of stylus drag effects. They are not affected by the usual things that may apply to cheap belt-drive or cheap direct-drive applications.