Thorens TD150 replacement motor - diyAudio
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Old 23rd April 2006, 10:32 PM   #1
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Default Thorens TD150 replacement motor

Hello,

I restore an old Thorens TD150 and need a new motor (16 pole, 2-phase synchronous AC motor). I think to take off the pulley on the old and put it on a new one.

I think of these motors :


Premotec http://rswww.com/cgi-bin/bv/initSess...tockNo=4410423

Linn LP12


All are 250rpm 50Hz.

Somebody know if these motors are OK for TD150 ?


Thanks

Pascal
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Old 23rd April 2006, 11:29 PM   #2
EC8010 is offline EC8010  United Kingdom
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I think you'll find it's a 24 pole motor. Any 24 pole synchronous motor will rotate at 250rpm when driven by 50Hz. 24 pole motors were very popular for turntables. If you measure the pulley diameter and the subplatter diameter, divide the one into the other, then multiply the result by 33.33r you should be able to check whether your existing motor is 24 pole (I think you'll find it is). After that, your only problem is whether the shaft diameter is correct for your pulley.
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Old 24th April 2006, 10:27 PM   #3
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Hello EC8010,

thank you.

My pulley : 14mm (for 33tr)
My subplatter : 160mm

The shaft diameter 3mm

I think that this Airpax motor http://fr.farnell.com/jsp/endecaSear...U=147876&N=401 could be the good one for my TD150


Best Regards

Pascal
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Old 25th April 2006, 08:53 AM   #4
EC8010 is offline EC8010  United Kingdom
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Well, doing the sums from your measurements says that the motor rotates at 377rpm. That means that you were right and I was wrong because you do need a 16 pole motor that rotates at 375rpm, but the Airpax motor says 250rpm because it's a 24 pole motor. I assume you've tried asking Thorens about a replacement motor? The other possibility is to drive the Airpax motor from a 75Hz supply. A 75Hz oscillator and a little loudspeaker amplifier driving a step-up transformer would do the trick.
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Old 26th April 2006, 10:15 AM   #5
AndrewT is offline AndrewT  Scotland
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Hi,
your Thorens 150 motor only needs 90Vac to 110Vac to drive the platter.

Hopefully your replacement motor will not need any more voltage.

It would be even better if it needed less voltage, possibly no step up transformer.
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Old 13th May 2006, 09:38 PM   #6
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Pascal,

I have the original motor from my TD 145, it was setup in 220 Volts 50 Hz
but here in Canada it didn't work...
If you want it ; with the pulley.. ? give me a message!

I did replace it with a origin live DC motor 2 years ago.

Regards.

Alain
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Old 8th October 2006, 01:46 PM   #7
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Hi,
Alain, are you still keeping the 220v50Hz motor.
I would like to get it for the replacement of my 117v60Hz TD160 motor. If you can send it to me, please tell me the cost and how can I pay to you.
Regards,CHOW
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Old 8th October 2006, 02:28 PM   #8
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audio3chung,

Yes, I still have it, little use because during about 15 years the TT has been stored
you only need to apply some oil ; and it's the original motor of my TD145 with pulley

Could you give me your postal address, please
so I can check for shipping cost

I have a paypall account. I sell it for the shipping cost...

my email: aldupon AT sympatico . ca
remove the spaces and replace the AT by @

Regards.

Alain.
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