Tonearm mount to the plinth vs arm board vs rotating arm board vs isolated tower

The OP in this thread, is asking about an idler.

@kanchi647
The idlers are one of the crudest, oldest form of turntable, and with them comes.....(based on my personal direct experiences)

The most vibrations, least isolation, the most noise.

That's what you are dealing with.

For these reasons I would recommend you try a design that works to eliminate those three (at least) design symptoms.

When done well they (idlers) can be quite good. I own a Jean Nantais Lenco that contains reference level (Parts) see my virtual system. His design was called the best turntable by blogger A. Salvatore at one time.

His armboard design specific to your thread question, has gone to great extent to reduce the symptoms mentioned above.

To give you and others reading an idea of how far he goes; here is a picture of mine showing the extent he goes to....to reduce vibrations, noise and provide for isolation. 

https://photos.app.goo.gl/MdYZd7sBGJ1cCHyC8

Similar cavities exist under the motor. Even with these huge cavities, it still weighs 100 lbs.

^^^^
It's very easy to mess with a used turntable that cost a couple hundred dollars to acquire.

Nandric
Those who intend to build an new plinth for their TT's are in different
position from those who want to keep their TT as is.

@nandric 

Nikola
With these old idlers, (Garrard/Lenco's, etc...) like the OP of this thread is considering rebuilding ... everyone I know .......from the past, current, and I presume anyone on this AudioGon site, is not using this turntable type (idler)........ as is.

Buyers initially seek out the motor/platter system.

And....even then...... many folks, as in the case of the Jean Nantais Lenco version I ended up with; have replaced or significantly modified the platter, top plate, put in a new idler wheel, Spindle, thrust pad, bearing, etc.....

The finished tables people discuss on these audio sites bear very little resemblance to the originals.

@nandric 
Nikola.
I never used the words "cheap TT's". You did, and it changes the meaning.

To the idler fan (the subject of this thread is about an idler); there is "hidden" "intrinsic" value in what is acquired for this small sum of money .....if.

that person has the means to transport the "mechanical's", into another "body" (plinth).

Idlers bring unique challenges to Audiophile projects.

^^^^
The oil is real
The spikes are real.
The pneumatic feet are real.
The sand filled base plate is real.

The end objective result for all of this paraphernalia.....is fake,
an illusion, not real, and it is limited only by ones imagination.

For this reason, anyone that holds "rigid" to certain principles in this Illusion of a hobby, lives, IMO, inside a box, with defined borders.  

Nikola - re your magnets question.
to best understand the French Connection and answer your question well. There is a brand new for 2020 AudioGon La Platine thread at this link.  

https://forum.audiogon.com/discussions/2020-update-jc-verdier-la-platine

I believe you will find your answers. But if you still have questions, prefer you ask them there to keep the pertinent information centralized.

This thread is about armboards and armpods. La Platine has a solid Aluminum Block Pillar that pivots. It is bolted to the top of the Plinth using serious bolts.

@atmasphere 

Atmasphere

I will let @halcro  (Henry) address any comments questions relating to his system.

Cheers

^^^^^^^^^^^^^

@nandric

You used qualification ’’illusion’’ but without any argumentation.

Nikola - It is not possible to "argue".... "illusions" they are personal and definitely not rigid 8^0

But if the court allows, I can provide ..ah...representation, an example.

"Oh my Lord ...Good God Nikola....Miles Davis is right there playing in front of me....... in my panic room" .aka - Dads Hole.

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@atmasphere a specific comment in your post above is in reference to Halcro’s system.

You might be able to get good results with a separate arm pod, but you will get better results if the arm mounting isn’t separate from the plinth.

We know the "Plinth" by definition, is represented by the lowest member of the base. A block serving as a base.

In Halcro’s system the base (Plinth) for his turntable kit that uses armpods.... is the shelf itself. Which in itself ....the shelf .....is attached to the load bearing wall.

So all his tonearms/armpod’s and turntable are attached to this plinth (aka) "a shelf" 8^0

This was covered in detail on the Copernican thread.

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and GK
Not sure what question or answer you are referring to, or if it was even directed to me. I was replying solely to Nikola’s post.
I will say however.

Blessed is the Audiophile that finds Audio Nirvana on a budget.

Kind of like you and your Walkman that you discuss here frequently. A shining excellent example for everyone to follow.