Re: Thorens TD-124 speed issue...too fast

71.145.191.154

Posted by Pete Fowler on September 10, 2006 at 16:24:58

In Reply to: Thorens TD-124 speed issue...too fast posted by ddarch on September 10, 2006 at 16:01:08:

Hey Dave,

You have a lot of options, and all of them are easy to try.

1. Look at the pulley on the motor - it has a larger diameter and smaller diameter section. The smaller one is for 60Hz. Also be aware you need to tighten the two grub screws in the proper order to assure the pulley stays balanced when you install it (I can never remember which but I can look it up if needed).

2. Remove the platter and find the commutator plate - there is a small knurled screw that fits in one of three holes. Each represents a different AC voltage range and should be set according to the local AC values. I believe the ranges are 100-120V, 125-150V, and 220-240V.

Anyway - if the commutator is currently set on the 100-120 range you can try moving it to the next highest range. This will slow the motor down a bit (possibly too much). The plus with this approach is the motor runs much cooler. The minus is it will take a bit longer for the speed to stabilize. If you end up just a touch too slow then see option 3, but move the magnet away from the pulley slightly.

3. There is an eddy brake magnet you can adjust. Pull the platter and locate the crescent moon shaped magnet next to the stepped pulley. This magnet creates an eddy current in the stepped pulley which acts as a brake. To slow things down a bit, loosen the screw holding the magnet in place and slide it about 1/8th inch closer to the pulley. (It helps if you turn the speed adjustment so the deck is running as fast as possible first). Then fire it up and see if the added braking is enough to slow the platter. If not, repeat as needed.

Those are your options - good luck!

Pete

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Follow Ups Full Thread

Topic - Thorens TD-124 speed issue...too fast - ddarch 16:01:08 09/10/06 (19)

Re: This might be a stupid suggestion but... - MattC 16:41:26 09/11/06 (0)

Re: Thorens TD-124 speed issue...too fast - aktan 02:12:25 09/11/06 (1)

Not the ball bearing - you have dirty sleeve bearings - Pete Fowler 07:35:22 09/11/06 (0)

STILL not there. - ddarch 17:19:13 09/10/06 (12)

Other possibilities (longish)... - Pete Fowler 20:27:36 09/10/06 (0)

Too thin oil? - Tobby-tt 18:05:07 09/10/06 (4)

Unless - ddarch 18:33:48 09/10/06 (0)

Re: Too thin oil? - ddarch 18:28:43 09/10/06 (2)

Re: Too thin oil? - Tobby-tt 19:00:17 09/10/06 (1)

Misunderstanding - Tobby-tt 19:09:05 09/10/06 (0)

Re: STILL not there. - jmc 17:53:15 09/10/06 (5)

Re: STILL not there. - ddarch 18:00:50 09/10/06 (4)

Re: STILL not there. - noroom4squares 18:12:17 09/10/06 (3)

Re: STILL not there. - ddarch 18:23:20 09/10/06 (2)

Re: STILL not there. - noroom4squares 18:42:34 09/10/06 (1)

Re: STILL not there. - ddarch44 18:46:57 09/10/06 (0)

Re: Thorens TD-124 speed issue...too fast - albertoderoma 16:26:25 09/10/06 (0)

Re: Thorens TD-124 speed issue...too fast - Pete Fowler 16:24:58 09/10/06 (0)

Re: Thorens TD-124 speed issue...too fast - noroom4squares 16:10:29 09/10/06 (0)

Follow Ups

Re: Thorens TD-124 speed issue...too fast - Pete Fowler 16:24:58 09/10/06 (0)

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