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Magnetic turntable bearing
Magnetic turntable bearing
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Old 10th May 2013, 12:04 AM   #251
yildiray35 is offline yildiray35  Turkey
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Is it possible magnetic bearing for idler drive turntables? I have got Perpeteum Ebner 2020 turntables. I cleared all auto functions and tonearm. I fitted SME 3009 sound is good for me spending cheap cost. I am listening bearing with my ear come near. It's small noise. May i use magnetic push, any suggestions? Thanks and best regards.
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Old 10th May 2013, 06:09 AM   #252
dady is offline dady  Balearic Islands
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Originally Posted by yildiray35 View Post
Is it possible magnetic bearing for idler drive turntables? I have got Perpeteum Ebner 2020 turntables. I cleared all auto functions and tonearm. I fitted SME 3009 sound is good for me spending cheap cost. I am listening bearing with my ear come near. It's small noise. May i use magnetic push, any suggestions? Thanks and best regards.
Yildiray
(Sory , answer maybe include 25 page. )
Hi Yildiray: Of course is possible to put magnetic cushion in every turntable. I didn't know how much weight the platter of the yours. The rule number one is put away the magnetic field from the cartridge. I recently made this in a Micro Seiki RX1500 VF, but I made a special non magnetic steel axle that transfer this fields from the button to up. In the base of the axle I installed a neodymium magnet and another one in a cup of non magnetic but firmly in the base of the turntable. I could rise the weight of the platter from the original 3Kg to 25kg but after rebalanced it the final weight was 19Kg. The neodymium cylinders have 5cm of diameter for two of tall and the gap between the magnets is nearly 0,2mm. If you have a patient lathe operator that is your friend every operation is possible. Best Regards.
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Old 10th May 2013, 09:40 AM   #253
dady is offline dady  Balearic Islands
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Default Perpetum Ebner

Quote:
Originally Posted by yildiray35 View Post
Is it possible magnetic bearing for idler drive turntables? I have got Perpeteum Ebner 2020 turntables. I cleared all auto functions and tonearm. I fitted SME 3009 sound is good for me spending cheap cost. I am listening bearing with my ear come near. It's small noise. May i use magnetic push, any suggestions? Thanks and best regards.
Yildiray
(Sory , answer maybe include 25 page. )
I previous post speak about Macon, is a ceramic plastic for make this kind of axle. I will investigate about Perpetum Ebner.
Best Regards
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Old 10th May 2013, 01:28 PM   #254
dady is offline dady  Balearic Islands
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Hi Yildiray: I were watching the Perpetumm Ebner 2020, this is a record changer but if you prolongate the axle with a non magnetic material making a new support for the magnets is possible. Maybe this choice is a waste of technology because the tolerances of this device not justify the investment. The most important results of magnetic suspension is the noise. I the case of a heavy platter imagine, going to suspend in one sphere point and the molecules of the contact points can produce more friction and this gonna traduce in rumble noise. Maybe in your turntable with idle wheel adding to the unsynchronized motor that produce much more noise and rumble that the noise you pretend in avoid with the magnetic suspension. There are many good turntables without magnetic cushion that have unmeasurable noise.
Please is my point of view and you can do that you like.
Best and King Regards
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Old 13th January 2014, 12:52 PM   #255
dahlberg is offline dahlberg  Sweden
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Magnetal Electrodynamic Bearings - YouTube

Magnetal - Electrodynamic Bearings for Friction Free Operation

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Old 13th January 2014, 02:27 PM   #256
sq225917 is offline sq225917  United Kingdom
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I'm always weary of companies claiming technological breakthrough but with no physical examples to show. I have a great 3D animation of a perpetual motion machine, but I couldn't make it.
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Old 16th January 2014, 03:24 PM   #257
dady is offline dady  Balearic Islands
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Please explain how the magnetic fields interact in this model.
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Old 16th January 2014, 04:38 PM   #258
dahlberg is offline dahlberg  Sweden
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It's over my head, but this might help.

http://www.magnetal.com/docs/MagnetalPhD.pdf
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Old 16th January 2014, 05:27 PM   #259
DaveM is offline DaveM  United States
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I'm not sure which is magnet and which is metal/ceramic etc in this pic, but this should help.
Attached Images
File Type: png matsch_caps_magnetics-350.png (43.5 KB, 523 views)
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Old 24th January 2014, 11:20 PM   #260
dahlberg is offline dahlberg  Sweden
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I recived a mail reply from a representative of Magnetal, and in short.
It will not work as wanted since performance is dependent on high speed
rotation.
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