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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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In Reply to: Re: Is the little captive ball at the end of a Thorens TD125 MkI spindle supposed to roll? As in... posted by jsm on April 24, 2007 at 12:15:57:
When it comes to the overall machining on the Rek O Kut, it is far more precise than any other mass produced turntable I have measured. The run out on the main bearing was less than 0.0007 inches. The run out on the platter which is 11 inches was under 0.0020 after 35 years of use. Try measuring any of the other common turntables on the market and see if they are even close.Add to that, the main bearing well is cast iron which is vastly superior to steel, brass, or bronze in terms of resonance control.
The ball bearing is captured by a tapered area machined in the center of the bearing well.
It is at least as accurate as a captured ball system and probably easier to maintain over the decades. Simply replace the ball every few years and replace the oil as necessary.
By simply polishing the thrust plate, and utilizing a silicone nitride ball I am several orders quieter than my old Linn or Thorens turn tables. I can clearly hear the musicians flip the pages, shuffle their feet, and place their bows on the stand. I have heard this same level of precision on a 40k dollar Basis set up. This is seriously fun low level detail.
Measure any turntable you care to evaluate and tell me what you read.
The ball centered in the bearing well is under very high load. It will not rumble. If you doubt this, simply measure the thing with a scope. Many of the Rondine Rek O Kuts listed rumble as -67db (idler models) to -78db (belt driven models). This equals or supasses more than a handful of well respected turntables on the marketplace today.
They achieved this rumble level without polishing the main bearing or thrust plate. Just with fine machining and nothing more. This is quite an accomplishment. The machining on the Rek O Kut is thoroughly first class. Polish the damn thing and you will think you are listening to a world class top level vinyl set up at a CES show.
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Follow Ups
- Rek O Kut machining tolerances - tubesforever 23:39:58 04/24/07 (1)
- Re: Rek O Kut machining tolerances - jsm 11:17:25 04/25/07 (0)
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