problem with Grace g-940

Antripodean · 4th November 2009, 07:45 AM

Hi everyone

I am trying to set up my Grace G-940 arm; the unipivot. I bought it second hand some time ago and for so many reasons I haven't put it on my other TT (probably because I have been happy with my PS-X60 with PUA-7 tonearm).

Anyway, the pivot seems to lean to the right all the time. Does this mean it has jumped off the pivot? Run out of silicone oil? Or something far more mysterious?

Any assistance is greatly appreciated

planet10 · 4th November 2009, 08:16 AM

have you adjusted the lateral weight?

dave

Antripodean · 4th November 2009, 08:36 AM

Quote:

Originally Posted by planet10

have you adjusted the lateral weight?

dave

yes, as far as I know. It appears the lateral balance weight is not heavy enough to straighten the tilt

planet10 · 4th November 2009, 08:58 AM

Then something is hanging up. What does the pivot point and the cup look like?

dave

Antripodean · 5th November 2009, 12:02 AM

Thanks Dave. I will have a look inside. I was trying to see if there was a simpler solution but it seems not. C'est la vie

brianco · 6th November 2009, 04:49 PM

Have you checked that the wire between the pillar and the arm tube has enough freedom?

kevinkr · 6th November 2009, 05:15 PM

I would also look around on Vinyl Engine | The Home of the Turntable, there is likely to be someone who may have a specific recommendation as to what the problem may be.

Is the Cartridge you are using in the recommended weight range? (not tracking force)

Antripodean · 8th November 2009, 09:12 AM

thanks; looking at all the options. no cartridge at this stage, need to get it working properly first

kevinkr · 9th November 2009, 01:27 AM

Quote:

Originally Posted by Antripodean

thanks; looking at all the options. no cartridge at this stage, need to get it working properly first

The fact that you have no cartridge installed may be the root of your problem. The uni-pivots I have owned all required a cartridge to be installed before adjustment of the lateral compensation weight resulted in proper playback geometry. Find an old cartridge or possibly purchase the one you intend to use and then try to set the arm up - I think you will find it works a lot better.

planet10 · 9th November 2009, 04:28 AM

I concur with Kevin. Without the mass of the catridge, it won't balance ...

dave

4th November 2009, 07:45 AM	#1
Antripodean diyAudio Member Join Date: Dec 2008	problem with Grace g-940 Hi everyone I am trying to set up my Grace G-940 arm; the unipivot. I bought it second hand some time ago and for so many reasons I haven't put it on my other TT (probably because I have been happy with my PS-X60 with PUA-7 tonearm). Anyway, the pivot seems to lean to the right all the time. Does this mean it has jumped off the pivot? Run out of silicone oil? Or something far more mysterious? Any assistance is greatly appreciated

4th November 2009, 08:58 AM	#4
planet10 diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Then something is hanging up. What does the pivot point and the cup look like? dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

6th November 2009, 05:15 PM	#7
kevinkr diyAudio Moderator Join Date: Sep 2004 Location: Boston, Massachusetts Blog Entries: 6	I would also look around on Vinyl Engine \| The Home of the Turntable, there is likely to be someone who may have a specific recommendation as to what the problem may be. Is the Cartridge you are using in the recommended weight range? (not tracking force) __________________ www.kta-hifi.net

9th November 2009, 04:28 AM	#10
planet10 diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	I concur with Kevin. Without the mass of the catridge, it won't balance ... dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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5th November 2009, 12:02 AM	#5
Antripodean diyAudio Member Join Date: Dec 2008	Thanks Dave. I will have a look inside. I was trying to see if there was a simpler solution but it seems not. C'est la vie

6th November 2009, 04:49 PM	#6
brianco diyAudio Member Join Date: Aug 2005 Location: Scottish Borders - Kelso; on the famous Tweed River!	Have you checked that the wire between the pillar and the arm tube has enough freedom?

8th November 2009, 09:12 AM	#8
Antripodean diyAudio Member Join Date: Dec 2008	thanks; looking at all the options. no cartridge at this stage, need to get it working properly first

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