TD-160 motor replacement - Page 2

Nanook · 20th June 2010, 02:37 AM

First, you need to verify the AC voltage that goes to the motor. It usually is 110V(120V) @ 60Hz here in North America. But the Thorens may step it down with a transformer.
Once you verify the voltage, you can calculate the speed in RPM.
V=(120Xf)/n
V is RPM
f is frequency of the voltage feeding the motor
n is the number of poles in the motor

so if f is 60Hz, and n=16, then the motor speed is 450 RPM
Several Ac motors are available to run 300 RPM@60Hz. You may just need a suitable motor pulley that is 50% larger. Eg: if the original pulley is 20mm in diameter, then a new pulley would need to be 30mm in diameter.

(original RPM/original pulley diameter)=(new RPM/new pulley diameter)
and solve for the new pulley diameter.

Tekkir · 23rd June 2010, 12:13 PM

Thanks for the formulas, Nanook. Interesting stuff, though I doubt I'd be able to fabricate a pulley.

kevinkr · 05:10 PM

Keep an eye on eBay TD-160 motors show up pretty frequently..

Synchronous Motor Speed equation:

V= (2F x 60)/N

Where:
60 is the number of seconds in a minute (duh!)
V= output rpm
F = line frequency 50/60 Hz or any other value such as that provided by an AC electronic speed control (TD-125, etc)
N= number of poles

Voltage is not required.

Gives the same result as Nanook's equation

Derek Dick · 27th July 2011, 06:29 PM

Hello! I am a new member. I see you said you have a td 160 out of use. I need a motor pulley for this turntable. Are you interested in selling the motor pulley of your turntable? If not, could you please inform the dimensions of the pulley, so that I can manufature one to replace in my turntable? Thanks a lot!

Derek Dick

cgrey · 24th February 2012, 12:14 PM

Hi, I'm new to the forum and looking for advice.
I'm looking at replacing a shaft on a TD 160 motor. I'm on a tight budget, so I'd rather not buy a new one as they appear to be quite sought after. The shaft has snapped and I have access to a machine shop where a new one could be made and pressed. Has anyone ever tried this? Is the shaft knurled or splined, or just a straight press? Could it be precision drilled out if pressing isnt an option?
Also, would anyone have drawings or dimensions for the pulley assembly? Is it with clutch or fixed to the shaft?

Any advice would be greatly appreciated.
Thanks

JBdV · 24th February 2012, 03:38 PM

I have a good original motor with shaft available....

cgrey · 25th February 2012, 11:46 AM

is this a 50hz motor/pulley? how much would you like for it?

20th June 2010, 02:37 AM	#11
Nanook diyAudio Member Join Date: Feb 2004 Location: Chinook Country.Alberta	possible TD-160 replacement motors... First, you need to verify the AC voltage that goes to the motor. It usually is 110V(120V) @ 60Hz here in North America. But the Thorens may step it down with a transformer. Once you verify the voltage, you can calculate the speed in RPM. V=(120Xf)/n V is RPM f is frequency of the voltage feeding the motor n is the number of poles in the motor so if f is 60Hz, and n=16, then the motor speed is 450 RPM Several Ac motors are available to run 300 RPM@60Hz. You may just need a suitable motor pulley that is 50% larger. Eg: if the original pulley is 20mm in diameter, then a new pulley would need to be 30mm in diameter. (original RPM/original pulley diameter)=(new RPM/new pulley diameter) and solve for the new pulley diameter. __________________ stew ☮ -"A sane man in an insane world appears insane."

30th June 2010, 04:55 PM	#13
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	Keep an eye on eBay TD-160 motors show up pretty frequently.. Synchronous Motor Speed equation: V= (2F x 60)/N Where: 60 is the number of seconds in a minute (duh!) V= output rpm F = line frequency 50/60 Hz or any other value such as that provided by an AC electronic speed control (TD-125, etc) N= number of poles Voltage is not required. Gives the same result as Nanook's equation __________________ "Extraordinary claims require extraordinary evidence." - Carl Sagan Last edited by kevinkr; 30th June 2010 at 05:10 PM.

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23rd June 2010, 12:13 PM	#12
Tekkir diyAudio Member Join Date: Dec 2009	Thanks for the formulas, Nanook. Interesting stuff, though I doubt I'd be able to fabricate a pulley.

27th July 2011, 06:29 PM	#14
Derek Dick diyAudio Member Join Date: Jul 2011	Hello! I am a new member. I see you said you have a td 160 out of use. I need a motor pulley for this turntable. Are you interested in selling the motor pulley of your turntable? If not, could you please inform the dimensions of the pulley, so that I can manufature one to replace in my turntable? Thanks a lot! Derek Dick

24th February 2012, 12:14 PM	#15
cgrey diyAudio Member Join Date: Feb 2012	Hi, I'm new to the forum and looking for advice. I'm looking at replacing a shaft on a TD 160 motor. I'm on a tight budget, so I'd rather not buy a new one as they appear to be quite sought after. The shaft has snapped and I have access to a machine shop where a new one could be made and pressed. Has anyone ever tried this? Is the shaft knurled or splined, or just a straight press? Could it be precision drilled out if pressing isnt an option? Also, would anyone have drawings or dimensions for the pulley assembly? Is it with clutch or fixed to the shaft? Any advice would be greatly appreciated. Thanks

24th February 2012, 03:38 PM	#16
JBdV diyAudio Member Join Date: Mar 2009	I have a good original motor with shaft available....

25th February 2012, 11:46 AM	#17
cgrey diyAudio Member Join Date: Feb 2012	is this a 50hz motor/pulley? how much would you like for it?