Jerry T's Stablizer - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 16th March 2004, 08:13 PM   #1
mpm32 is offline mpm32  United States
diyAudio Member
 
Join Date: Dec 2003
Location: New England
Default Jerry T's Stablizer

Nice piece of work Jerry and thanks for the cad drawing. Can you explain how it works?

It has eight smaller grooved rods sitting around a cental core that are held in place by rubber o-rings?

This sits on the TT pin.

Does the compression of the o-rings on the central core do anything other than hold the small rods in place?

Does it compress the "pin" hole in the central core for a tighter fit?


I think I can replicate in brass if I get those questions answered.



Thanks,

Mark
  Reply With Quote
Old 16th March 2004, 08:59 PM   #2
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Certainly looks very nice.

But having over the years tried nearly every variation
of the theme I generally don't use anything, though
I do still have a rubber friction fit clamp.

Of the devices I tried certainly the "best" is the screw
type clamp that uses a washer under the centre hole
and a screwdown clamp that flattens the record ( via
cantilever action ) against the the mat surface.

A system also used used on the Oracle I believe.

Very fiddly though, but the best.

Second best is probably combined edge and centre weights.

I just feel I should caution heavy centre weights on
their own don't work that well as they tend to lift up
the edges of a record (one of its ways up at least).

sreten.
  Reply With Quote
Old 16th March 2004, 09:04 PM   #3
diyAudio Member
 
Jerry T.'s Avatar
 
Join Date: Oct 2003
Location: 6 floors up! In Holland!
Thanks for the compliments.

The measurments on the drawing are in millimeters.
As the picture shows, the 8 outer rods are held in place by 2 O-rings 55mmX3.5mm (55mm is inner diameter). And that is all there is to it!
Make sure that the diameter 30.3mm of the core, and diameter 19mm are spot on for a perfect fit.
Most pins are about 7.1mm diameter so a hole of 7.3mm diameter is good enough.
Attached Images
File Type: jpg stabilizer.jpg (55.1 KB, 329 views)
__________________
Now, ain't that grand !
  Reply With Quote
Old 16th March 2004, 09:05 PM   #4
diyAudio Member
 
Jerry T.'s Avatar
 
Join Date: Oct 2003
Location: 6 floors up! In Holland!
Here's a bigger picture of the stabilizer.
It weighs about 500 grams.
Attached Images
File Type: jpg stab.jpg (6.6 KB, 312 views)
__________________
Now, ain't that grand !
  Reply With Quote
Old 17th March 2004, 08:13 AM   #5
diyAudio Member
 
Jerry T.'s Avatar
 
Join Date: Oct 2003
Location: 6 floors up! In Holland!
Quote:
Originally posted by sreten
I just feel I should caution heavy centre weights on
their own don't work that well as they tend to lift up
the edges of a record (one of its ways up at least).

sreten.
Lift up the edges of a record?
__________________
Now, ain't that grand !
  Reply With Quote
Old 17th March 2004, 09:29 AM   #6
Raka is offline Raka  Europe
diyAudio Member
 
Raka's Avatar
 
Join Date: Aug 2002
Location: Close to Oistrakh
Yes, if the "hole" that accomodates the label of the record is deep enough.
__________________
What is beyond the speaker?
  Reply With Quote
Old 17th March 2004, 11:41 AM   #7
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Raka is right, (I was assuming a label "well" in the mat)

With a flat mat it won't lift the edges of a record, but given the profile
of an LP the inner grooves would not be in contact with a hard flat mat.

sreten
  Reply With Quote
Old 17th March 2004, 12:28 PM   #8
diyAudio Member
 
Jerry T.'s Avatar
 
Join Date: Oct 2003
Location: 6 floors up! In Holland!
I'm using a felt mat.

The stabilizer's weight (500 grams) is distributed to the 8 rods on the outside. So in a way you have 8 "stamps" of 62.5 grams pushing down on the record in a diameter of 70mm.
__________________
Now, ain't that grand !
  Reply With Quote
Old 17th March 2004, 12:41 PM   #9
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi JT,

I was just advising caution,
sometimes things don't work the way you expect.

On a felt mat above a flat platter your stabiliser should work well.

With a hard mat with a label recess (like mine)
results would be more difficult to predict.

sreten.
  Reply With Quote
Old 17th March 2004, 01:21 PM   #10
diyAudio Member
 
Jerry T.'s Avatar
 
Join Date: Oct 2003
Location: 6 floors up! In Holland!
Quote:
Originally posted by sreten
Hi JT,

I was just advising caution,
sometimes things don't work the way you expect.

On a felt mat above a flat platter your stabiliser should work well.

With a hard mat with a label recess (like mine)
results would be more difficult to predict.

sreten.
Sreten,
No problem, i just wanted an explanation, so i gave you the facts.

Oh, Mark you wrote that you wanted to make one of brass. Make sure you putt some kind of coating or lacquer on it, because if you don't, you'll go crazy from the fingermarks on it.
__________________
Now, ain't that grand !
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



New To Site? Need Help?

All times are GMT. The time now is 06:26 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2