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  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  (System | Reviews | Threads | Answers | This Thread)

11-09-11
  Responses (251-300 of 573)
Click title to read one, or click date to read all below it.

01-14-12   Halcro great to see you trying the thread drive. the pulley ...   Dover

01-14-12   Okay, i'm sure that i'm missing something hear as it relates ...   Catastrofe

01-14-12   Regards, catastrofe. reverse your order of operation: 60/33. ...   Timeltel

01-15-12   It's actually 1.80018... i think it's a repeating number. l ...   Lewm

01-14-12   Catastrophe u missing .68 of a revolution - try 60 / 33.3333 ...   Dover

01-14-12   Hi dev, i am using only two motors instead of the three. i f ...   Halcro

01-14-12   Dover, is your platter the same pod material as the tw prod ...   Dev

01-15-12   the raven is a lp12 "in heavy". no matter what you ...   Syntax

01-15-12   Solong's observations regarding play in the raven motors fee ...   1kitch

01-15-12   It is actually 1.8 sec/rev. 33 and 1/3 rev/min divided by 6 ...   Tonywinsc

01-15-12   Dear halcro: as dover i'm using thread drive for all the yea ...   Rauliruegas

01-15-12   Dear raul, i did not mean to imply that i know that the time ...   Lewm

01-15-12   Hi ikitch, what the heck i was going to re-package that an ...   Dev

01-15-12   regardless of the accuracy of the timeline as long as it is ...   Hiho

01-15-12   Ahhh the vagaries of the audiophile mentality? rather than q ...   Halcro

01-16-12   I am going to borrow the timeline tomorrow. but not all my ...   Lewm

01-16-12   Dev - the final audio platter material is aluminium with ver ...   Dover

01-16-12   that reminds me of an old chinese saying, "ride a cow b ...   Hiho

01-16-12   Lewm ~ you don't happen to own a ttweights table? i've now c ...   Sksos1

01-16-12   I'll ask this question again since the other post was delete ...   Tonywinsc

01-16-12   I hear you tony but it seems nobody else is or wants to pay ...   Ecir38

01-16-12   Tony ~ i'd be happy with what you propose but what i see cur ...   Sksos1

01-16-12   it's not an impossible expectation? have you not seen my vid ...   Halcro

01-16-12   Sksos1. in a word, no. i do not own a tt weights turntable ...   Lewm

01-16-12   Should have read tony's post before writing the above post. ...   Lewm

01-17-12: Tonywinsc
Hi Halcro, I saw your video. It is impressive how well your tt holds speed, but that was a relatively short period of time. Can you let it run for 30 minutes to see the results over the long term? I am very curious to see those results. If the laser mark has no drift after 30 minutes that would mean your tt has speed accuracy on the order of 0.00002%. That would be far beyond expectations in my mind. Some suggest that the speed accuracy fluctuates, but I believe that speed error is cumulative when using a device such as the timeline. That means tha the longer you run your tt with the timeline the more error, or drift you should see. I don't think that cueing and dropping the tonearm will make the line move the other way due to the motor controller. It reacts to the torque changes.
Tonywinsc  (System | Threads | Answers | This Thread)


01-17-12   Let me clarify my one statement a little better. cueing up ...   Tonywinsc

01-17-12   Hi tony, i have left the timeline running for an entire albu ...   Halcro

01-17-12   Hi halcro, that is excellent news. so is speed accuracy so ...   Tonywinsc

01-17-12   Dear tony, you wrote, "the laser mark should drift slow ...   Lewm

01-17-12   Hi tony, yes....i think speed accuracy was indeed mastered o ...   Halcro

01-17-12   I don't like to post without actual direct experience but he ...   Ct0517

01-17-12   Hi chris, i don't believe this is a fair assessment of the d ...   Halcro

01-17-12   "one point not properly addressed so far.....is how idl ...   Ecir38

01-17-12   Henry - my post was not an assessment of the dd technology a ...   Ct0517

01-17-12   I've got the timeline in house. on the lenco, with ac suppli ...   Lewm

01-17-12   unfortunately i didn't have the timeline when i had the tt-8 ...   Halcro

01-17-12   lew.......please remove the mat. slippage can be a real prob ...   Halcro

01-18-12   Thanks halcro, was just wondering by chance. dang lew that w ...   Ecir38

01-18-12   I would love to know the results of using a timeline on a ma ...   Ketchup

01-18-12   that's easy to figure out. simply stick a piece of tape wit ...   Hiho

01-18-12   timeline here is the video with the timeline on the transr ...   Halcro

01-18-12   Regardless of what the speed inaccuracy is due to.......one ...   Halcro

01-18-12   Hi lew - regarding the lenco l75. can you please do the test ...   Ct0517

01-18-12   Hi henry i just re-read what you wrote. i am assuming when ...   Ct0517

01-18-12   Actually, since the timeline is sitting on the spindle, and ...   Lewm

01-18-12   Hi lew - do u have a center weight with a flat top ? bit of ...   Ct0517

01-18-12   Hi chris, my statement was directed at the 'speed' of any co ...   Halcro

01-18-12   Halcro, you have done a fantastic job bringing us up to spee ...   Dover

01-18-12   I said it once before long ago- any tt motor that brings the ...   Tonywinsc


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