DD belt drive platter via VHS tape - Page 3 - 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 6th November 2009, 06:04 AM   #21
Nanook is offline Nanook  Canada
diyAudio Member
 
Nanook's Avatar
 
Join Date: Feb 2004
Location: Chinook Country.Alberta
Default directdriver... instux please....

ok, how to do it (reverse rotation)? What about the speed...if a smaller "platter" could be used and the speed increased and then drive directly via the smaller reverse rotating DD motor.


hmm , I think it could be very interesting.
__________________
stew -"A sane man in an insane world appears insane."
  Reply With Quote
Old 6th November 2009, 07:04 AM   #22
diyAudio Member
 
directdriver's Avatar
 
Join Date: Nov 2005
Quote:
Originally Posted by Nanook View Post
What about the speed...if a smaller "platter" could be used and the speed increased and then drive directly via the smaller reverse rotating DD motor.
I choose DD tables that have pitch or speed control such as Pioneer PL-570 and Technics SL-M3.
  Reply With Quote
Old 6th November 2009, 08:14 PM   #23
Aengus is offline Aengus  Canada
diyAudio Member
 
Aengus's Avatar
 
Join Date: Apr 2004
Location: Victoria, BC
Quote:
Originally Posted by Nanook View Post
ok, how to do it (reverse rotation)?
If you attached the platter firmly to the shaft, perhaps you could just turn the driver TT upside down?

Regards.

Aengus
  Reply With Quote
Old 6th November 2009, 08:55 PM   #24
Nanook is offline Nanook  Canada
diyAudio Member
 
Nanook's Avatar
 
Join Date: Feb 2004
Location: Chinook Country.Alberta
Default turn a TT upside down?

well it could work, 'ole Aengus

but I was hoping for a more elegant solution.
Attached Images
File Type: jpg possible Direct coupled TT.jpg (48.8 KB, 201 views)
__________________
stew -"A sane man in an insane world appears insane."
  Reply With Quote
Old 6th November 2009, 11:48 PM   #25
diyAudio Member
 
Steerpike's Avatar
 
Join Date: Jan 2006
Location: Johannesburg, South Africa
Quote:
Originally Posted by Nanook View Post
ok, how to do it (reverse rotation)?
Depends on the particular model. We discussed some Pioneers here Turntable - Reverse Motor
__________________
Steerpike's Toybox
  Reply With Quote
Old 16th June 2010, 04:33 PM   #26
diyAudio Member
 
directdriver's Avatar
 
Join Date: Nov 2005
Default no direct coupling

I have to abandon the "direct-coupling" approach a la Teres Verus motor style. First, too much work and fiddling for me so I'm going to stick with using a belt or an idler wheel that's more practical. On the internet I found this quote from another forum thread that makes sense to me:

Quote:
"An idler provides a rubber gripping surface so that the motor can grip and drive the platter. If the rubber surface was part of the motor drive pulley or the platter, then speed would change as the rubber wears or compresses, but by making the idler out of rubber, and the drive pulley and platter out of metal, the drive ratio and hence speed, remains constant, despite the vagaries of the rubber idler size over time. In summary: It provides the metal/rubber interface needed for grip. And it allows the dimensions critical to accurate speed, i.e. pulley/platter diameters, to be machined in metal and hence much more accurately than in rubber"
All I need is a quality idler wheel in between the two platters or back to belt-drive. Or I will try to modify the direct-drive electronics to "underdamp" the feedback loop network to make it more relaxed sounding suggested by a member here, if I can learn how to do it... direct drive is still the most elegant approach to me if done right. Gotta stick to my screenname, you know.

.
  Reply With Quote
Old 3rd May 2011, 07:14 AM   #27
diyAudio Member
 
Join Date: May 2011
I was thinking of ways to upgrade my p1 (can never just leave it alone, right?!) and came up with this very idea of using an old direct drive turntable to turn it via some type of belt, thereby eliminating any electric current or machine vibrations from the table completely. As I thought more about it, it just made more and more sense (if a little crazy!). Then I figured, wait a minute, someone else has to have already thought of this as well. So I did some Google-ing and found this thread. I've gotten some great tips off here too as far as belt material. I think I'll try VHS tapes first, hell I have some sitting around that I won't ever watch. I'll post my results.
I do have one dumb question though: Without turning on the Rega P1, just having the platter spinning from an "outside motor" if I put the stylus down on a record and turn on my amp, it plays right?! I don't need any power source just to send the signal to the amp right? Sorry, dumb question, but the whole concept is just far out to me!
  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
FS: Empire 698 turntable Platter & Outer Ring, Belt, and Dustcover for sale yo2tup Swap Meet 2 11th May 2012 07:21 PM
Philips CD 373 drive belt Chivvyp Digital Source 1 17th November 2011 08:16 PM
rega P3 drive belt size woodturner-fran Analogue Source 2 22nd August 2011 12:30 PM
TT drive belt woodturner-fran Analogue Source 73 19th November 2008 11:35 AM
Idler wheel drive vs. Belt-drive mig-ru Analogue Source 4 3rd December 2003 01:06 AM


New To Site? Need Help?

All times are GMT. The time now is 04:00 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