Nude Turntable Project

09-19-13: Ct0517

Dover
An example of this is the Verdier, where the motor is not strong, and addressing this should be a prerequisite before converting to thread drive.

imo - if you truly understood how this table worked you would not have made this comment. I guess JC Verdier does not know what he is doing. If I recall you discussed a Verdier in the past on this forum and it required the use of a setup bearing to run properly as it oscillated. Could it have been one of the many counterfeit ones around ? Its a very imitated and duplicated table. You need to be very careful.

Your recollection is not correct. I have not used the words "set up bearing" and "oscillated" in the context of the Verdier. I have not heard a "fake" Verdier whatever that is.
I understand perfectly how the Verdier works, and there have been many iterations since the first Granito based one came out..
Suggest you read up on the Verdier. http://www.jcverdier.com/ADSL/platineV.html

Hifi News Review - "Incidentally, the bearing tan be fitted with a bail and thrust plate, by-passing the magnetic support. but apparently it doesn't then sound as good."

You might also like to check out Dertonams comments as suggested regarding the use of a ball :

04-01-09: Dertonarm
Lewm, two magnets rotating in a horizontal = planar sphere do indeed produce an eddy current field.
The Platine Verdier folks and dealers will hate me for this .......anyway:
The current La Platine does feature somewhat lower quality magnets (compared to the old Focal magnets used till 1990/91 - that particular magnet was no longer available when Focal changed to the "6-tablet-magnet" - design invented by J. Mahul for the 15" woofers in early 1991) - thats why they promoted the ball to be inserted in the top bearing shaft hollow. To stabilize the vertical movement of the platter (in mid-90ies production was a tendency to instable magnetic field and often in loss of magnetic force causing many Platines in europe (and I suppose elsewehere too) to "oscillate" (= being unstable in height of platter)). To solve this problem the "top ball bearing shaft" was introduced (well, the hollow was there before, so they just put in the ball - smart move). That particular problem never occured with pre-1991/92 Platines. However the eddy current brake effect is no longer as dominat as it was in the original version with much better and more homogenous magnets.
Dertonarm (Threads | Answers | This Thread)

With regard to my comments on weak motor, the Final Audio can pull the 22kg platter/mat/clamp to speed in less than 1 revolution. The Verdiers that I have seen and heard do not have this drive power. I know a couple of Verdier owners who have replaced the motor drive to good effect. The Final also has a correctly designed pulley for thread drive with self centering profile.
The original Verdier came with the option of a belt or linen thread ( or nylon according to one review on the Verdier website ). The optimum pulley profile for a thread drive is a concave face so that the thread self centres. Running a thread on a pulley with a flat face can result in instability of the thread tracking as it can ride up and down, or will find a natural position either at the top or bottom of the pulley, depending on how accurate the pulley is in terms of congruency to the platter edge.

09-19-13: Lewm
I've often wondered how the heck they can keep the thread from slipping down the smooth sides of the platter.

Tension and a correctly design pulley ensures that thread remains stable as above.

09-19-13: Ct0517
My Verdier and my other hobby tables are compared against my Studer in my own room real time - switching between the two.
So thats my Ground Zero Dover. Whats yours ?

The origins of the term ground zero began with the Manhattan Project and the bombing of Japan. The Strategic Bombing Survey of the atomic attacks, released in June 1946, used the term liberally, defining it as: "For convenience, the term 'ground zero' will be used to designate the point on the ground directly beneath the point of detonation, or 'air zero.' William Laurence, an embedded reporter with the Manhattan Project, reported that "Zero" was "the code name given to the spot chosen for the atomic bomb test" in 1945.
This forum is a sharing and examination of ideas, not a war zone.
The use of the term Ground Zero is perhaps unfortunate.

Ct0517

09-19-13: Ct0517
Dover .... imo - if you truly understood how this table worked you would not have made this comment. I guess JC Verdier does not know what he is doing. If I recall you discussed a Verdier in the past on this forum and it required the use of a setup bearing to run properly as it oscillated. Could it have been one of the many counterfeit ones around ?

Thought you might like to have a look at a Verdier on the official Verdier website with the thrust pad and ball option.
http://jcverdier.me.pagesperso-orange.fr/nouvellepage2.htm
It is not a fake. It doesn't oscillate. JC Verdier does know what he is doing.

Fyi Callas also do an upgrade kit for the Verdier to enable the adjustment of the ball precisely such that the platter is mechanically grounded, as per the Goldmund philosophy, but the weight borne is very very tiny, just enough to ground the platter. Many folk prefer the sound of the Verdier with the platter mechanically grounded to dissipate energy, and with a decent aftermarket motor and power supply to improve the speed accuracy and timing.
Naturally there will be other folk who prefer the more mellifluous and less precise sound of the Verdier with standard motor and non grounded bearing.

Hi Chris,
The Verdier has always interested me....and as you say......Nude....but also Copernican in concept?
One question I have.........what is the material of the tonearm mounting pods?
They look like wood? And how are they fixed to the base? And how do you organise a different one when you get a different tonearm?

Hi Chris,
The Verdier has always interested me....and as you say......Nude....but also Copernican in concept?
One question I have.........what is the material of the tonearm mounting pods?
They look like wood? And how are they fixed to the base? And how do you organise a different one when you get a different tonearm?

Hi Henry there is no wood here.

As you are genuinely interested please find attached some email answers in my direct correspondence with Mr. Verdier. Your question is answered below. I also have updated pics in my virtual page that show the setup clearly.

Imo - Mr Verdier is genuine; but understand he is also a manufacturer with a business to run. This is very evident in how he addresses my setup ball questions. My vintage granito model never came with one.

His email answers are un-modified.

I am now going fishing Henry. I will be using a Cordell CC Shad Green/Yellow to see if I can snag a lake trout.
Cheers
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Dear ,
Thank you for your message.
A gap of 1cm is absolutely normal.
Can you tell me more about your curious tone arm?
Please accept my best regards.
J.C.VERDIER

Dear
Many thanks for the compliments you send me.
Thanks for the photos where I can see in what high quality of environment my turntable is installed.
For sure your pleasure is my pleasure and we share it with numerous users of my material.
Please accept my very best regards.
J.C.VERDIER

Dear ,
Many thanks for your message.
Your base is made of GRANITO .
Granito is a material composed by little pieces of marble becoming from different origin agglomerated inside a mold with cement.
And of course machined and polished to obtain a good looking.

The resonance of the plinth with its suspension is about 5Hz and it is well absorbed by the air cavities.

Please accept my best regards.
J.C.VERDIER

Dear ,
The arm board is made of 2 different aluminum parts: a cubic part and a plate .
Hopping that you enjoy the listening of good records.
Please accept my best regards.
J.C.VERDIER

Dear ,
It is not easy for me to choose what is better for you.

So I will tell you another time what is told.
The possible installation of the ball was poposed to answer some customers who want to try to use the ball.
At the beginning it was only optional .
But later , to normalized the manufacturing , I included systematically the kit steel ball + ceramic past.
For my part I am not in favour of using the ball in accordance with the original design .
Probably you have this original design so you don't have the steel ball.

Don't worry about the stories of pirates , for sure some of them tried to attract customers by copies , because they are not able to conceive a product by themselves .
I don't have any of them in hands and I have no comment on their working.
For sure that should be easy if only a steel ball could let a turntable work properly!

Have a good day and enjoy your records .
Please accept my best regards.
J.C.VERDIER

Dear
Your 1Kg center weight clamp does not ask problems.
We could put till about 7Kg on the Platine Verdier before the magnets can't sustain the platter.
Please accept my best regards.
J.C.VERDIER