Turntable speed accuracy


There is another thread (about the NVS table) which has a subordinate discussion about turntable speed accuracy and different methods of checking. Some suggest using the Timeline laser, others use a strobe disk.

I assume everyone agrees that speed accuracy is of utmost importance. What is the best way to verify results? What is the most speed-accurate drive method? And is speed accuracy really the most important consideration for proper turntable design or are there some compromises with certain drive types that make others still viable?
peterayer
Dear Nicola,
You disappoint me. I thought you were such a thorough compatriot who lets nothing escape him and now I discover that you did not even 'click' on the video Link I previously attached for the Timeline?
In it, you would have seen.......about half way through the video......where he drops the cartridge on the record and immediately.....the speed decreases?
And this is only the beginning of the record. Not a heavily modulated passage?
Can you imagine what happens with a really heavily modulated passage? And that turntable in the video has a very heavy platter.

So here once again.....for your benefit Nicola....I attach the Timeline video for you to study. Please don't disappoint me :-)
TIMELINE
Halcro - you are being disingenuous. The Fat Bob has a stretchy elastic band for a belt and furthermore the drive from the belt is close to the bearing. By not driving the circumference of the platter a lot of purchase from the puny motor is being thrown away. I think you will find this is a classic German pisstake of the Harley Motorcycle, after which it was named, and which you are very lucky if you make it round a decent corner.
Sorry Dover,
I'm confused?
Are you saying that turntable link by Hiho is the Fat Bob?
Oh....OK.
You mean it was the Fat Bob in the video of the Timeline?
I agree.......not a very impressive performance for a turntable?
But it makes the point about 'stylus drag' very convincingly?
Syntax: In the other side why so that big deal with the thread when for so many years it was and is used. My Acoustic Signature TTs only accept thread drive and in my RX5000 I only use thread and hundreds of TTs out there are using thread for drive.

Maybe the thread drive is the new toy for you and as a rockie in that regards you are excited , come down you have to learn to much about.

Regards and enjoy the music,
R.