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In Reply to: RE: Help for replacement AC Motor for LP12 posted by Tube747 on September 17, 2016 at 10:49:45
I do know which Promotec motor is often recommended as a drop in for the Linn LP12 which is the ***813 but it is not a 220v model. Why this voltage?
Nevertheless it is not necessarily regarded as an improvement upon the similar one used by Linn. It is usually selected simply where the old motor has failed. It is easily available to the general public whereas the 819 apparently isn't. So you won't necessarily gain anything in performance from such a swap. The only posting I ccan find from someone who has done the swap reported no discernable difference in performance.
What nominal speed do you need for a 50Hz input should there be a suitable 220v model?
Have you considered how you will remove the existing pulley and mount it on the replacement ( I assume you will be doing this. Of course you may be machining your own pulley)? I gather from others that have done it that it is difficult. However it depends what tooling is available to you.
Follow Ups:
I know a fellow who is building a LP12 with 3 motors, and all three motors are premotec 220v 50Hz.
He has sent me the picture of this particular top plate for this project that is made by carbon fiber with 2mm thickness. Quite interesting!!
But the funny part is how he adjust Hemisphere for the speed of each motor??
His project has the plinth made by Ebony and all internal supporting are Mahogany. Baseboard is made of Bamboo wood.
Me only concern a replacement that can bettered the stock one, three motors is too complicated IMO. Nice to have a discussion on this three motors topic but not actually go for it!!
In that case if the guy has the right Promotec 220v motor then you know where to go for your answer.
I cannot find such a motor in the Promotec catalogue. The suitable turntable motors are 110v. However they can be run from 220v by inserting a 6.8KOhm resistor in series. Are you sure that this is not what he has done?
I'm sure he has 220v 50Hz as these are stock item from Linn factory made for 220v region. AFAIK, you can't find this item from Premotec catalog because this is custom item for Linn.
For sure the way he is doing will be a nightmare by adjusting the hemisphere 3 times for the setup!
I made a mistake. He has ebony plinth and mahogany for each corner brace of the ebony plinth, and bamboo wood for the cross brace, Alder wood for the baseboard.
That's why I am so curious to start a thread a while ago about this issue.
Way too complicated!!
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