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Newly made magnetic levitation turntable DIY kit

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#3
Very nice work. Is this something you will offer to diyers?

I’ve been looking at the Transrotor Fat Bob Reference, which uses mag assist support, and magnet coupled drive to reduce flutter. I like your idea of total magnet support. If you have machining capabilities, consider the options.

There’s a precision machining company I contract work to and I was considering sending some CAD files to have them build my TT design, but I’d never engineered a turntable prior, and there is considerable experimentation and testing in something like this. It takes time, and that’s not available in great abundance these days.
 
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#5
kouiky said:
Very nice work. Is this something you will offer to diyers?

I’ve been looking at the Transrotor Fat Bob Reference, which uses mag assist support, and magnet coupled drive to reduce flutter. I like your idea of total magnet support. If you have machining capabilities, consider the options.

There’s a precision machining company I contract work to and I was considering sending some CAD files to have them build my TT design, but I’d never engineered a turntable prior, and there is considerable experimentation and testing in something like this. It takes time, and that’s not available in great abundance these days.
Click to expand...
Hello
Yes I can make this turntable. If interested you can contact me.
 
#10
Has the design got measurements recorded showing the 'Platter run off' that can be expected from this Bearing / Platter design.

Approx' $2000 for the parts does produce parts that are looking quite substantial and do have a aesthetic appeal.

There is nothing to show the end products operational tolerances Included in the video, only the freedom of rotation is made a point off.
At this asking price, there is additional evidence that can be offered and would be very useful.
There is no evidence showing the measurements that are produced as the end product for the machining tolerances used.
 
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#12
I made a reference to the measurements as I have seen your Post on the SP10 MkII Thread.
There are a measurements shown on the SP10 Thread of Platter run off and descriptions are offered about how the run off can impact on the sonic being produced.
 
#13
ebay link：https://www.ebay.com/itm/204302086018

Specially designed air pump that works quietly.
Suitable for classic turntables such as MICRO SEIKI 8000, as well as various air-floating turntables and air-floating tonearms.

It has two outputs and can drive two air flotation devices.
The air output of the air pump can be adjusted with the knob.
Supports working voltage of 100-240V.

The air pump is designed with multiple voltage stabilizing and filtering structures.

Generally, you only need to adjust the output power to 20-30% to fully suspend the turntable. At this relatively small working power, the noise it emits is similar to the volume of the disc rotating when a CD player is played.

I currently use it to propel my own air float vinyl turntable. It can also be used for air-floating vinyl tonearms, air-floating bases, etc.
The air pump interface adopts a convenient plug-in interface. We will attach two 2-meter-long air tubes to facilitate your connection to the turntable or tone arm.
 
#15
Platter Run Off is more accurately described as Run Out.
There are simplistic tools that can show the condition is present.
How present the off axis rotation is present is not always made known.
A styli in a groove substantially benefits from a very small increment of Run Out as the machined tolerance.
 
#18
As far as I am aware most magnetic bearings, such as the Clearaudio CMB, reduce the pressure on the platter spindle to a low amount, but do not eliminate it completely. My own diy magnetic assist bearing floats by around 0.5mm on its own, but is in contact when a record is added, a little more when I add the 500g record weight. This is still massively less than the 7.2 Kg platter mass ( platter taken from a Pro-ject rpm 9 ). This still allows for any vibration to be dissipated in the bearing.
 
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