My 1980's Tangential Tone Arm and my 2010 improvement - Page 11 - 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 7th October 2011, 09:58 PM   #101
diyAudio Member
 
Join Date: Nov 2010
Location: Prescott, Arizona
Quote:
Originally Posted by ralphfcooke View Post
No update since August, please don't keep us in suspense; does it work as a 'passive' device? or have you added a servo?
Hello ralphfcooke,
Hello to everyone who has been wondering,

I had to temporarily stop working on my Tone Arm because of financial reasons. It is not easy to support a project like this when you're retired on a fixed income. But I'll get it done "come Hell or high water"

I've since started to have doubts, that the friction drive will work properly. I think that it can be tuned to work with a particular record but may have to be retuned for the next record which may have a different composition of vinyl etc.

When I built the 2010 version of my Tone Arm, I allowed for the inclusion of a stepping motor, lead screw and associated components to drive the carriage. I actually already have the motor. It is made by Portescap and is 10mm in diameter.

During the time I could not do any physical work on my Tone Arm, I did plenty of work in my CAD program relating to the possible inclusion of a servo drive. Thinking and CAD work doesn't cost any money. You can do that all day long.

All the linear tracking Tone Arms I know, that use an electronic servo system, require that the Tone Arm pivots slightly out of true tangency in order to trigger the servo. Even though the error is so small that even a "golden ear" could not hear the resulting distortion, someone will say: "well, it's not perfect"

During my recent thinking period, I came up with a method to produce the electrical signal to trigger the servo without the Tone Arm loosing tangcy!
That change can be built into the existing prototype. Needless to say, I am extremely excited over that developement.

So, hopefully I'll have more to report soon.

Sincerely,

Ralf

Last edited by Straight Tracker; 7th October 2011 at 10:04 PM. Reason: Missing comma :-)
  Reply With Quote
Old 7th October 2011, 10:38 PM   #102
diyAudio Member
 
Join Date: Jun 2007
From one Ralph to another (ignoring small spelling differences), thanks for the reply and I look forward to future revelations.
  Reply With Quote
Old 7th October 2011, 11:36 PM   #103
lowpoke is online now lowpoke  Australia
diyAudio Member
 
Join Date: Mar 2009
Location: Australia
Send a message via Skype™ to lowpoke
Thanks for the update Ralf, I'm sure many are following this project with interest. I know I have been!
__________________
Show us what ya got at Homebuilt Hi-fi
  Reply With Quote
Old 8th October 2011, 08:24 PM   #104
gninnam is offline gninnam  United Kingdom
diyAudio Member
 
Join Date: Mar 2008
Looking forward to the next phase and hope the money side works out
  Reply With Quote
Old 15th November 2011, 11:07 PM   #105
diyAudio Member
 
Join Date: Dec 2006
Any updates?
  Reply With Quote
Old 17th November 2011, 05:06 AM   #106
diyAudio Member
 
Join Date: Nov 2010
Location: Prescott, Arizona
Default Hello audiostar

I expect to go back to work on my Tone Arm starting Monday, November 21, 2011. I have temporaryly solved my financing problem. As I wrote earlier, I continued to work on my Arm in my CAD program and worked on future designs.

Sincerely,

Ralf
  Reply With Quote
Old 24th December 2011, 08:45 PM   #107
gninnam is offline gninnam  United Kingdom
diyAudio Member
 
Join Date: Mar 2008
Quote:
Originally Posted by Straight Tracker View Post
I expect to go back to work on my Tone Arm starting Monday, November 21, 2011. I have temporaryly solved my financing problem. As I wrote earlier, I continued to work on my Arm in my CAD program and worked on future designs.

Sincerely,

Ralf
Hope you are having a good Christmas Holiday.

Andy news Ralf ?
  Reply With Quote
Old 25th December 2011, 10:03 PM   #108
RCruz is offline RCruz  Switzerland
diyAudio Member
 
RCruz's Avatar
 
Join Date: Sep 2006
Location: Wallis
Blog Entries: 1
Keep us informed. Merry christmas
__________________
RC
  Reply With Quote
Old 28th December 2011, 02:21 AM   #109
diyAudio Member
 
Hypnotoady's Avatar
 
Join Date: Sep 2008
Location: Houston, Texas
My goodness that is a fine piece of work.
  Reply With Quote
Old 13th June 2012, 09:58 AM   #110
diyAudio Member
 
Join Date: Nov 2010
Location: Prescott, Arizona
Default I'm baack

Hello Everyone,

Between now and next Monday, I'll write a description of the drastic changes I've made to my Tone Arm and post a few new pictures too.

Sincerely,

Ralf
  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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Tangential Arm Floating Magnets ebijma Analogue Source 8 6th December 2004 07:37 PM
MG-1 AIR BEARING Tangential Arm audio-kraut Analogue Source 7 24th November 2004 08:55 PM
Airpumpless Ladegaard Tangential Arm sreten Analogue Source 31 23rd April 2004 11:58 AM
Turntable physics questions-velocity of tangential arm? perfusionist Analogue Source 66 28th December 2003 05:35 PM
Need tone arm help woody Analogue Source 4 18th June 2003 01:21 AM


New To Site? Need Help?

All times are GMT. The time now is 12:39 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