The shaft on my td-160 motor is bent. Can anyone recommend a replacement, preferably a DC motor that will do both 33 and 78 RPM?
Thanks,
Tekkir
Thanks,
Tekkir
Heya,
Take a look at the Origin Live TT motor. I think it is able to run at 78 RPM. Doesn't come cheap though, I think it starts at €300 all the way up to €900. Considering the same upgrade for my thorens table when my motor fails, already spinning in the wrong direction ocassionally.
Take a look at the Origin Live TT motor. I think it is able to run at 78 RPM. Doesn't come cheap though, I think it starts at €300 all the way up to €900. Considering the same upgrade for my thorens table when my motor fails, already spinning in the wrong direction ocassionally.
Not as of yet. I've contacted theanalogdept.com and I'm looking on Ebay for original replacement. The price of the DC controller/motor units are totally prohibitive.
Long ago (nearly 20yrs) I had an Pink Triangle LPT turntable with a dc drive set up, and it had really poor speed stability - to me basically intolerable, the speed changed significantly (and audibly) during the course of playing a single side. I ended up selling it to a fellow in the UK who was going to get it updated..
There have been allegations that most of these aftermarket dc based motor drives have very poor speed stability. See the Linn forums for an extensive if possibly biased discussion of this issue. (I don't doubt it is true based on my limited experience.) Make sure anything you purchase has a tachometer and servo control - and I would suspect there is not one that does.. Ones that rely on sensing back emf do not seem to work very well.
A backwards rotating ac motor may be an indication that the phase shift capacitor is bad. I'd replace it. Further I would take real good care of the motor you have - replacing it will not be too easy depending on the number of poles it has. Premotec makes excellent 24 pole motors, but IIRC a lot of Thorens AC motors are 16 poles - not so easy to find replacements for.
I would be wary of the speed stability of any reasonably priced dc motor based drive. (There are usually one or more lurking on eBay.)
There have been allegations that most of these aftermarket dc based motor drives have very poor speed stability. See the Linn forums for an extensive if possibly biased discussion of this issue. (I don't doubt it is true based on my limited experience.) Make sure anything you purchase has a tachometer and servo control - and I would suspect there is not one that does.. Ones that rely on sensing back emf do not seem to work very well.
A backwards rotating ac motor may be an indication that the phase shift capacitor is bad. I'd replace it. Further I would take real good care of the motor you have - replacing it will not be too easy depending on the number of poles it has. Premotec makes excellent 24 pole motors, but IIRC a lot of Thorens AC motors are 16 poles - not so easy to find replacements for.
I would be wary of the speed stability of any reasonably priced dc motor based drive. (There are usually one or more lurking on eBay.)
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Thorens motor
Thanks Kev,
Probably good advice on the controllers. I've already come to the same conclusion on care of my present motor, though the spindle is bent. It wobbles and knocks.
Thanks again for the advice,
Bill
Thanks Kev,
Probably good advice on the controllers. I've already come to the same conclusion on care of my present motor, though the spindle is bent. It wobbles and knocks.
Thanks again for the advice,
Bill
I've once replaced a bent motor spindle (it was an ac motor from a Walker turntable) using a long drill bit cut to size
I have a thorens 160, I havn't used for years. Contact me if you're interested ,let me know what part of the country you live in. tinear
That sounds great, how can I locate this cap? I have no idea how it looks and with what to replace it.
Would be really awesome if this can be fixed, doesn't sound expensive and I can solder a little so can't be hard considering the joints are pretty large.
Spindle
Sounds like an interesting project, Mik. I'm guessing your machinest skills are far greater than mine, but if I manage to get a replacement motor, I may experiment.
Thanks, Tinear. I'll be in contact.
Bill
Sounds like an interesting project, Mik. I'm guessing your machinest skills are far greater than mine, but if I manage to get a replacement motor, I may experiment.
Thanks, Tinear. I'll be in contact.
Bill
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.
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.
Thanks for the formulas, Nanook. Interesting stuff, though I doubt I'd be able to fabricate a pulley.
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
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
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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
Derek Dick
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
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
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