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Old 1st October 2006, 10:10 AM   #1
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Default what can I do to a bent tone arm

Hi everyone, I have got a thorens TD160 with a original tonearm
but sadly bent at the rear part, should anyone has the same experience and tell me what can I do, to find another thorens tonearm in HONG KONG is quite difficulty.
I perfer to disassembly it and re-straight it.
Thanks,
CHOW
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Old 1st October 2006, 11:32 AM   #2
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The first thing I would do is strip it down completely then you can see what the real damage is. What's the arm made of?
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Old 1st October 2006, 01:55 PM   #3
Zen Mod is offline Zen Mod  Serbia
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yes you must strip it down ,then look what you can to repair damage
post picture when you dismantle it .
be careful with bearings and wiring

to pink-Thorens,alu tube.
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Old 1st October 2006, 06:15 PM   #4
bulgin is offline bulgin  South Africa
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Default What can I do to a bent tonearm

Hi Chow

This looks like a nice enough arm to have a go at fixing. The armtube looks like a thinwall alu tube?

Depending on how the armwires enter the armbase (by plug and socket or directly), you'll have to remove the complete arm from the tt. Once this is done, remove the armweight. Is there a spiral grooved plastic stub for the weight at the back? If the stub is hollow, there'll be a selftapper inside to remove the stub. There should be 5 wires in the armbase: red, green, white and blue and a 5th, which should be black, connecting the armbase to the armtube itself.

Once you have removed the arm from the tt, removed the weight stub etc, try to post more pics like the esteemed pinkmouse suggested, so we can assist you further.

Whatever will have to happen, the armwires will have to be removed from where they could get damaged. Most likely, the armtube will also have to be removed from its pivot. With a little bit of luck, a tube bending spring could be inserted and the bend carefully pressed in a soft jaw vise or a lathe headstock chuck for better trueing.

Good luck

bulgin
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Old 2nd October 2006, 02:24 AM   #5
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Thanks for your suggestion, I think it is worth to have a try, will post pict once I have strip it down.
Regards,
CHOW
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Old 2nd October 2006, 10:13 AM   #6
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BTW If someone can poitnt out where can I get the assembly
diagram of this tonearm( I dont know the exact model, maybe a
TP16).This surely will make the job more easy.
Thanks,
CHOW
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Old 2nd October 2006, 02:05 PM   #7
mpm32 is offline mpm32  United States
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If possible, strip the arm down so that you just have the tube. Plug one end and fill the tube with moist fine sand. Pack it in there good. Plug the open end. Now you can bend the tube without fear of crimping it. I have used this method on tubing successfully several times.
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Old 2nd October 2006, 02:43 PM   #8
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Yes, it looks like a most safe way to bend or straighten a hollow tube, surely I will take a try provided I can de-assembly the tone arm.
Regards,
CHOW
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Old 2nd October 2006, 02:49 PM   #9
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It looks like it ought to be fixable (with care). I would check to see if there is any associated bearing damage to be repaired, too, since it probably took a pretty good whack to bend it that much.
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Old 8th October 2006, 04:44 AM   #10
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Hi,
I have strip the tonearm and find an arm tube like this,
I manage to make it quite straight and assembly the whole thing, it now play LPs well, but can any one tell me where can I get a 50Hz motor pulley for the TD160 because I get one TT with 117v 60Hz motor, how stupid I am.
Thanks
CHOW
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