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Best Tonearm for warped records?

The platter has a 17 thousands of an inch slope to it (Aka Goldmund) so most of the warp has already been eliminated.

Viscous fluid is 50 weight Mobil one. It's made to absorb vibrations not impede tracking.

This was a result of experimenting with dozens of viscosity's and plotting low frequency mechanical bias.

All done in great detail in the 1990's.
 
tabarddn51 said:
The best arms for tracking warped LP's are Uni-Pivots.
Click to expand...
We've already noticed your strange preference, - straight (with no horizontal tracking angle correction) tonearms without the antiscating. An ot top of that now you suggest the worst pivoted tonearm implementation - the one which cannot provide stable VTF, VTA, wobbles a lot...
 
mr_petit said:
I also hardly call that a warp.
I mean it's not good but compared to certain warps found it's not exactly the mount everest.
For a tonearm to play a warp, any form of movement damping (fluid. biotracer etc) also isn't ideal. It greatly raises the VTF in the upslope and lowers it in the downslope.
Ideally you'd want a long, light tonearm without damping.

But the best way to combat warps is of course with a vacuum platter. Problem solved! :biggrin:
Click to expand...
second best way is with an Oyaide BR-12 mat and a record clamp- I use them on my SL-1200GR2 and Marantz 6200 (tables with aluminum platters) and the combo gets rid of almost all the warps, A horrible warped record that won't play on my Rega P3 (glass platter) or my SRM-Tech Azure (acrylic platter) will be nearly perfectly flat using the BR-12 mat.
www.audiohobby.eu

Oyaide Butyl Rubber Turntable Mat BR-12

OYAIDE BR-12 TURNTABLE MAT
www.audiohobby.eu www.audiohobby.eu
 
I'm a fan of unipivots, so I can't disagree with many of the opinions offered. But I'd add that the SME Series III tracks very well, and that those cartridges with damping brushes, the Shures especially, but also the Pickerings and Stantons, do very well. And you can always try that odd DiscWasher damping doohickey that attaches to the headshell.
 
''the one which cannot provide stable VTF, VTA, wobbles''

Correctly implicated Uni-Pivots do not wobble, Mine certainly do not & neither did Hadcock. I'm playing a $3000+ Ortofon MC cart on my arm at present, I and nobody else would not do that if the arm wobbled!!

Cheers
 
That SOTA example on page one of this thread is just ridiculously amazing. But.. It is not playing a warped record?

Out of what I have I was amazed how much better the Garrard Zero 100 (w. Shure M75) tracks versus a Technics SL1210 (w. Ortofon concorde).
Only a handful of warped discs remaining in my collection fortunately, can't stand looking at the rollercoaster ride some warped vinyls create for my cartridges.

~

tabarddn51 said:
''the one which cannot provide stable VTF, VTA, wobbles''

Correctly implicated Uni-Pivots do not wobble, Mine certainly do not & neither did Hadcock. I'm playing a $3000+ Ortofon MC cart on my arm at present, I and nobody else would not do that if the arm wobbled!!
Click to expand...
catBot said:
Not a scientific argument. If you were less poor you would install an USD1000000 cartridge, right?
And that still would not prove anything.
Click to expand...
Apologies for repeating myself: Getting non-warped copies is often an option! :bigok:
Wouldn't want to play warpies with such an expensive cart, but to each their own..
 
I’m surprised no one has mentioned a peripheral ring. I use one on my Technics SP10R/SME 310 when records are badly warped. Flattens them right out.
 
lissenup said:
I’m surprised no one has mentioned a peripheral ring.
Click to expand...
This thing will increase the bearing load, which is not good.
A vacuum platter does that much better. The atmospheric pressure creates a ~200kg flattening force all over the LP.
For example, the mass of AT665 is ~600 grams only.
 
ejman said:
The best tonearm I have for tracking a really badly warped record is a Decca International Unipivot. That tonearm sticks to the groove like glue. The other tonearms that I've compared to the Decca for reference - Rega RB 300, Dual 1019 Tonearm, Pioneer PL 112D tonearm. The Decca best these by a long shot. What say you - whats your tonearm tracking champion?
Click to expand...
The Technics SL-1200 Mk II/Stanton 681A was for years, my warped record tracking champion.
 
catBot said:
This thing will increase the bearing load, which is not good.
A vacuum platter does that much better. The atmospheric pressure creates a ~200kg flattening force all over the LP.
For example, the mass of AT665 is ~600 grams only.
Click to expand...
Increased bearing load in insignificant. Ring weighs 640 grams. Even double that would have no effect on a quality deck.
 
mr_petit said:
Play the outer track where the real warp is:biggrin:
Click to expand...
I don't like that song. ;)

This first tune warp is not as deep, but is more abrupt than the Fixx video. The RCA Toronto pressing of this LP is most excellent! :thumbsup:

Crystal Blue Persuasion.
Off "Crimson & Clover." Roulette Records. SR 42023. RCA Toronto pressing. 1969.
Run-out: RSD-528-A SR-42023-A TG.
 
This video is of my SME 3009 S2 Improved — also, a sharp rise and drop.

Digging Your Scene.
Blow Monkeys - "Animal Magic." RCA RPL-8343 (PL-70910). RVC pressing (Japan). 1986.
Run-out: Z V 〄 Ⓑ RPL - 8343 A 1 1 1 ✲ S
 
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