Thorens TD150 replacement motor

PTSOUNDLAB · 23rd April 2006, 10:32 PM

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

EC8010 · 23rd April 2006, 11:29 PM

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.

PTSOUNDLAB · 24th April 2006, 10:27 PM

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

EC8010 · 25th April 2006, 08:53 AM

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.

AndrewT · 26th April 2006, 10:15 AM

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.

Alain Dupont · 13th May 2006, 09:38 PM

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

audio3chung · 8th October 2006, 01:46 PM

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

Alain Dupont · 8th October 2006, 02:28 PM

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.

23rd April 2006, 10:32 PM	#1
PTSOUNDLAB diyAudio Member Join Date: Dec 2001 Location: FRANCE / TOULOUSE	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

23rd April 2006, 11:29 PM	#2
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	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. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

25th April 2006, 08:53 AM	#4
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	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. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

26th April 2006, 10:15 AM	#5
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	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. __________________ regards Andrew T.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

24th April 2006, 10:27 PM	#3
PTSOUNDLAB diyAudio Member Join Date: Dec 2001 Location: FRANCE / TOULOUSE	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

8th October 2006, 01:46 PM	#7
audio3chung diyAudio Member Join Date: Sep 2005	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

8th October 2006, 02:28 PM	#8
Alain Dupont diyAudio Member Join Date: Sep 2003 Location: Paris - France	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.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Thorens TD150 Mk1 Arm part needed	waam68	Analogue Source	9	29th January 2008 07:03 AM
thorens td150 turntable	peter hawthorne	Analogue Source	2	4th November 2007 10:56 PM
Thorens td150 & SME 3009	cougarnut	Analogue Source	4	18th October 2006 08:27 AM
thorens td 160 replacement motor	dionysio	Analogue Source	2	31st March 2004 04:45 AM
Thorens TD-160 Replacement Motor	dzeetz	Analogue Source	9	15th January 2004 08:58 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read