World-Designs-Forum  

Go Back   World-Designs-Forum > DIY Projects > Sources
Register FAQ Members List Calendar Gallery Today's Posts Mark Forums Read

Sources Your DIY source designs (turntables etc.)

Reply
 
Thread Tools Display Modes
  #1  
Old 4th January 2006, 05:39 PM
Shane's Avatar
Shane Shane is offline
Senior Member
 
Join Date: Jan 2006
Location: Glorious Devon
Posts: 1,475
Default Brushless DC motors

I'm thinking of using a brushless DC motor in a turntable project, but I'm not very well up on the electronics behind them. Does anyone have any information or suggestions?
Reply With Quote
  #2  
Old 4th January 2006, 05:54 PM
Ianm2 Ianm2 is offline
Senior Member
 
Join Date: Dec 2005
Location: lancs
Posts: 1,175
Default Re: Brushless DC motors

try either premotec or maxon.
Reply With Quote
  #3  
Old 4th January 2006, 06:07 PM
alexs2 alexs2 is offline
Member
 
Join Date: Jan 2006
Location: London
Posts: 45
Default Re: Brushless DC motors

Quote:
Originally Posted by Shane
I'm thinking of using a brushless DC motor in a turntable project, but I'm not very well up on the electronics behind them. Does anyone have any information or suggestions?
This is a link to Origin Live's site,which is obviously commercial,and thus slanted to their products,but may be of some use,at least for their blurb on why to go DC.

http://www.turntable-power-supply.co...ly_outline.htm

Having said that,I'm very happy with the AC Premotec on my Linn,with a Lingo to drive it.
Reply With Quote
  #4  
Old 4th January 2006, 06:49 PM
Ianm2 Ianm2 is offline
Senior Member
 
Join Date: Dec 2005
Location: lancs
Posts: 1,175
Default Re: Brushless DC motors

dont' go dc, trust me, I tried it and it made my record sound like a cd player, kileed the dynamics, too.
Reply With Quote
  #5  
Old 4th January 2006, 10:27 PM
Shane's Avatar
Shane Shane is offline
Senior Member
 
Join Date: Jan 2006
Location: Glorious Devon
Posts: 1,475
Default Re: Brushless DC motors

I wasn't thinking of the Origin Live type motor, which is a bit gutless IMHO. There are some seriously meaty motors out there, particularly the outer-rotor type (Revox capstan motor, for example). I suspect that the reason why some idler-type tts sound so rhythmic and dynamic is because of their ability to dump lots of motor power into the platter to overcome transient slowing. Trouble is brushless DC motors aren't really DC atall, but 3-phase or multiphase, but I can't find any lucid info on how their controllers work.
Reply With Quote
  #6  
Old 4th January 2006, 11:02 PM
Greg.'s Avatar
Greg. Greg. is offline
WD Archivist
 
Join Date: Dec 2005
Location: Bristol, UK
Posts: 3,582
Default Re: Brushless DC motors

I think Ian's view is a little narrow. Certainly experiences with early Origin Live DC motors is not good and that was my finding even with the extortionally over-priced upgraded power supply. They seriously lacked torque, but not all DC motors are poor. The one currently used by Michell (don't know the make) has shed loads of torque. Regardless, even with the poor performance of the OL motors, I've never been able to agree with Ian's assessment on the sound performance. I found the OL Ultra kit very musical, but I had other unresolved issues which caused me to return the kit a year later for my money back. I subsequently bought the Michell which I've never regretted although I'm starting to wonder a little now with the rise of Lenco's etc.

Best wishes,

Greg

Last edited by Greg.; 4th January 2006 at 11:38 PM.
Reply With Quote
  #7  
Old 4th January 2006, 11:52 PM
Allen's Avatar
Allen Allen is offline
Senior Member
 
Join Date: Dec 2005
Location: South East London
Posts: 156
Default Re: Brushless DC motors

This is an interesting read if you haven't read it already:

http://www.teresaudio.com/motor.html
Reply With Quote
Reply


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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Useful source of TT bits Shane Sources 1 20th December 2006 12:11 AM


All times are GMT +1. The time now is 08:24 AM.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright World Designs