Or you could go to a two-belt, 2-motor situation - like in the pic below.
You have to ditch the plinth, though!
My 'SkeletaLinn' has a Karousel bearing plus Tranquility, sits on 3x springs and, obviously, is belt-driven. Originally, I had a Linn Premotec motor driving it but, after finding the 'Number9' speed controller (alas, no longer available), moved to 2x 24v Rega Premotec motors.
You have to ditch the plinth, though!
My 'SkeletaLinn' has a Karousel bearing plus Tranquility, sits on 3x springs and, obviously, is belt-driven. Originally, I had a Linn Premotec motor driving it but, after finding the 'Number9' speed controller (alas, no longer available), moved to 2x 24v Rega Premotec motors.
thank you for the pic.
"skeletaLinn" - never see before, but looks very interesting. In any case - excellent work.
more URLs:
https://www.stereonet.com/forums/topic/72075-skeletalinn-v2/
https://www.vinylengine.com/turntable_forum/viewtopic.php?t=108583&start=135
https://www.diyaudio.com/community/threads/a-few-mods-to-my-lp12.363847/
pros and cons of two pulley drive against three pulley drive ? for me hard to say.
observe this thread:
https://www.diyaudio.com/community/...3-pulley-drive-system-overview-wanted.390414/
maybe additional replies provide additional information to this question.
"skeletaLinn" - never see before, but looks very interesting. In any case - excellent work.
more URLs:
https://www.stereonet.com/forums/topic/72075-skeletalinn-v2/
https://www.vinylengine.com/turntable_forum/viewtopic.php?t=108583&start=135
https://www.diyaudio.com/community/threads/a-few-mods-to-my-lp12.363847/
pros and cons of two pulley drive against three pulley drive ? for me hard to say.
observe this thread:
https://www.diyaudio.com/community/...3-pulley-drive-system-overview-wanted.390414/
maybe additional replies provide additional information to this question.
you are right, when provided for each pulley an extra motor.3 pulleys all with different diameters? Wild!
If you mean this motor, you will find the datasheet here.
https://docs.rs-online.com/8a9c/0900766b815922b7.pdf
according this I guess, RS components have a successor, if this motor is no longer available there.
Check out also this URLs for asking to a 24V version:
http://www.akamaiaudio.it/spare-par...hronous-12v.html?search_query=motor&results=4
https://www.impexron-ltd.com/en/pro...lypremotec-990411131823-cena_bulgaria-4352218
https://sparedparts.com/en-de/products/16718612
http://www.hurst-motors.com/aabdirectdrive.html
https://www.newark.com/allied-motio...Kn1eJnA-vmtrtmMQmtGF83ke07pHuBDcSmBoCeCbw_wcB
https://www.ebay.com/itm/165638412146
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From the links above, Impexron is perhaps the only source standing a chance to actually supply a 31823 motor. Based on a previous inquiry concerning a different motor i suspect it will be cheaper to buy a new Rega and salvage the motor And it's perhaps the only way be certain you are not getting a reject.
Does anyone have experience with the Czech made motors used by Project and Clearaudio?
The Goldnote motor certainly looks interesting. Any ideas about its provenance? Datasheet?
And it's perhaps the only way be certain you are not getting a reject.Does anyone have experience with the Czech made motors used by Project and Clearaudio?
The Goldnote motor certainly looks interesting. Any ideas about its provenance? Datasheet?
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I had a bunch of linn type pulleys machined up a few years for a group buy of meldano's tt psu. They fit project and rega motors. The project motors you can buy direct for the rega motors you have to ask Paul Darwin at rega very nicely for a pulley-less 24v motor, which they will only supply via a rega dealer, or at least they did in the uk for the few guys who needed them.
The rega motors were better, quieter and lower cogging.
The rega motors were better, quieter and lower cogging.
Thank you!
The Rega upgrade kit is decently priced and appears to be easily available. Someone perhaps can answer a couple of questions
1. Is the pulley easy to remove?
2. How well does the Rega motor run at 3x the frequency so it can drive a platter directly with the factory pulley?
I have experimented with Thorens sync motors from TD125 mk1 and mk2 and both appear happy in this role but they only required a doubling of the frequency and a slight increase in voltage. The torque at a much higher or lower than the nominal frequency suffers but adding more motors can overcome this.
Changing the pulley, if possible, would be best.
If you ask Paul Darwin nicely he might provide the motor without pulley, he did for a few uk buyers.
The pulley comes off easily with a puller puller/press though.
https://www.amazon.co.uk/gp/aw/d/B0...2lkZ2V0TmFtZT1zcF9waG9uZV9kZXRhaWwyp13NParams
The pulley comes off easily with a puller puller/press though.
https://www.amazon.co.uk/gp/aw/d/B0...2lkZ2V0TmFtZT1zcF9waG9uZV9kZXRhaWwyp13NParams
I use 24v Rega motors on my 'SkeletaLinn', driven by Steve Tuckett's "Number9" motor speed controller. He's no longer with us but I'm sure I remember him telling me that these motors operated fine within a certain speed range (say, +/- 10 or 20%) but did not like being run outside this range.
So I think 3x the specified frequency would not be a good thing.
Agreed!
Andy
a friend of me want to realize a modification of his turntables - one device is an very old Linn LP12 (from approximately 1978) - second device the model "SOLIST" from Audio Konstruktion.
The internal synchronous motor (which remains on its place) should be replace by an outdoor motor unit.
Before buying anything like new motor and pulley and control unit, in the first step should use the same motor model and pulley in an outdoor motor unit, which I have present from an old AXIS motor control unit - go to
https://www.diyaudio.com/community/threads/repairing-linn-axis-motor-drive-amplifier.103911/page-4
Has done something like this before ?
Conditions that must be observed in any case are the following:
1) Flat belt like
https://www.thakker.eu/riemen/auf-mass/thakker-flachriemen-300-0-x-3-0-x-1-2-umfang-942-mm/a-10555/
is essential (round belts are not helpful in this case due the motor pulley surface).
2) Motor speed must be increase significantly due the changed platter circumference - but this is an easy task by making a new oscillator frequency on the AXIS motor control unit.
Since only a suitable flat belt is necessary in the first step, this is tempting to do.
Who know a delivery source resp. supplier for more oversized flat belts with high compliance ?
Thanks for advices.
The internal synchronous motor (which remains on its place) should be replace by an outdoor motor unit.
Before buying anything like new motor and pulley and control unit, in the first step should use the same motor model and pulley in an outdoor motor unit, which I have present from an old AXIS motor control unit - go to
https://www.diyaudio.com/community/threads/repairing-linn-axis-motor-drive-amplifier.103911/page-4
Has done something like this before ?
Conditions that must be observed in any case are the following:
1) Flat belt like
https://www.thakker.eu/riemen/auf-mass/thakker-flachriemen-300-0-x-3-0-x-1-2-umfang-942-mm/a-10555/
is essential (round belts are not helpful in this case due the motor pulley surface).
2) Motor speed must be increase significantly due the changed platter circumference - but this is an easy task by making a new oscillator frequency on the AXIS motor control unit.
Since only a suitable flat belt is necessary in the first step, this is tempting to do.
Who know a delivery source resp. supplier for more oversized flat belts with high compliance ?
Thanks for advices.
approximately 1200mm. But OL is a good advice. Belt of Micro Seiki's RX1500 have 1260mm according
https://www.ebay.com/itm/202958475205
URL itself:
https://www.originlive.com/hi-fi/turntable-record-player/