SMALL - espritmodel.com SMALL - Telemetry SMALL - Radio
Reply
Thread Tools
Old Jan 14, 2004, 10:22 AM
Registered User
Edmonds Wa. (Seattle)
Joined Nov 2003
3,926 Posts
Hate to jump in but the timming will affect the way it runs too!
If you are using a CC10 you can change it and it may work better.
I know it has worked for others in the past.
Scott
Littlescreamers.com
Littlescreamers is offline Find More Posts by Littlescreamers
Reply With Quote
Sign up now
to remove ads between posts
Old Jan 14, 2004, 01:10 PM
Registered User
JRW21's Avatar
Dunlap, Illinois, United States
Joined Aug 2003
320 Posts
I can second that. Retard the timing on programmable controllers and it will work. In most cases even with the weak magnets.
JRW21 is offline Find More Posts by JRW21
Reply With Quote
Old Jan 15, 2004, 04:36 PM
Registered User
Joined Mar 2001
2,625 Posts
Here are a couple of rewinding ideas I have. The first is for a 24-pole. + indicates CW and - indicates CCW. A, B, and C are the 3 different wires. The unmarked poles will be empty. 28 magnets?
t-turley is offline Find More Posts by t-turley
Last edited by t-turley; Jan 15, 2004 at 04:41 PM.
Reply With Quote
Old Jan 15, 2004, 04:40 PM
Registered User
Joined Mar 2001
2,625 Posts
The second is an idea I have for a mini-LRK, same diameter as a 280BB. I'm thinking of leaving every other pole empty. For this to work, which way do the poles need to be wound? And how many magnets?

Tony Turley
t-turley is offline Find More Posts by t-turley
Reply With Quote
Old Jan 15, 2004, 06:08 PM
Foam Flyer
Depdog's Avatar
Stockbridge, Georgia, United States
Joined Jan 2003
2,931 Posts
Look what the C/D ROM Fairy left me.







Glenn
Depdog is offline Find More Posts by Depdog
Last edited by Depdog; Jan 15, 2004 at 10:52 PM.
Reply With Quote
Old Jan 15, 2004, 06:12 PM
Registered User
Edmonds Wa. (Seattle)
Joined Nov 2003
3,926 Posts
I know every one of those motors
I will be picking up 200 surplus drives on Sat.
Good going you have some work cut out for ya.
Scott
Littlescreamers.com
Littlescreamers is offline Find More Posts by Littlescreamers
Reply With Quote
Old Jan 15, 2004, 06:47 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
The Netherlands, GE, Nijmegen
Joined Feb 2001
10,790 Posts
Quote:
Originally posted by t-turley
The second is an idea I have for a mini-LRK, same diameter as a 280BB. I'm thinking of leaving every other pole empty. For this to work, which way do the poles need to be wound? And how many magnets?
It's an lrk, therefore lrk winding diagram and 10 or 14 magnetpoles:
http://www.mfly.de/services.htm

It's better to use the uppercase/lowercase system for giving the winding diagram, that way you can use the minus symbol to denote an empty tooth.
Ron van Sommeren is offline Find More Posts by Ron van Sommeren
Last edited by Ron van Sommeren; Jan 15, 2004 at 06:50 PM.
Reply With Quote
Old Jan 16, 2004, 08:26 AM
Registered User
ssatoru's Avatar
Chiba, Japan
Joined Jan 2002
1,044 Posts
Raw surplus motor available

It is already reported in other thread but... the CDROM motor Takao-san and I have discussed here is available at Air Craft, along with N45 or N44H (high temperature) or 5x5x1 mm magnets.

I know this surplus raw motor is already sold out at the source and David's stock will not be infinite.

http://www.aircraft-world.com/shopdi...CD-ROM+and+Acc

Satoru
ssatoru is online now Find More Posts by ssatoru
Reply With Quote
Old Jan 16, 2004, 10:48 AM
Registered User
Joined Mar 2001
2,625 Posts
Quote:
Originally posted by Ron van Sommeren
It's an lrk, therefore lrk winding diagram and 10 or 14 magnet poles.
Ron,

What would be the advantages/disadvantages of 10 magnets vs. 14? As for the bigger 24 tooth motor, I rewound it last night in the classic LRK pattern, with 18T of #20. Is 28 the correct number of magnets needed? I plan to go with the star configuration.

BTW, in case none of us have said it lately, thanks for all of the help you've given on the "outrunner" threads.

Tony Turley
t-turley is offline Find More Posts by t-turley
Reply With Quote
Old Jan 16, 2004, 06:18 PM
Registered User
Joined Mar 2001
2,625 Posts
After another evening in front of the TV. LRK winding, 18T of #20. Magnet ring was 2mm black rubberized compound. The friend who gave it to me thinks it's from a VCR. Bearings will be added. Standard CD-ROM motor for comparison. I probably won't fly this in a plane due to the high "aspect ratio", so to speak. I just want to see if I can get it running.

Tony Turley

PS: All 24 teeth originally had 88T of a very fine wire.
t-turley is offline Find More Posts by t-turley
Last edited by t-turley; Jan 16, 2004 at 06:23 PM.
Reply With Quote
Old Jan 17, 2004, 04:32 AM
Lipoly not Lipo-suction
Cranky1's Avatar
Brisbane Australia
Joined Nov 2003
229 Posts
[QUOTE]Originally posted by Depdog
[B]Look what the C/D ROM Fairy left me.



I hate that fairy lol

Cranky
Cranky1 is offline Find More Posts by Cranky1
Reply With Quote
Old Jan 17, 2004, 09:32 AM
Foam Flyer
Depdog's Avatar
Stockbridge, Georgia, United States
Joined Jan 2003
2,931 Posts
I did not mind her so much till I took em all apart. Darn she has some sharp toys! Course they are not all from C/D Rom's. The very top one is from a Floppy drive, the two that look all aluminum on the left side are from hard drives.

I got 6 more yesterday, out of about 40 or so that I tore apart, only one had actual bearings in it. I did end up with about 24 usable motors, and have destroyed about 4 or 5 of them learning the tricks to take them apart.

Glenn
Depdog is offline Find More Posts by Depdog
Reply With Quote
Old Jan 17, 2004, 10:17 AM
Registered User
Edmonds Wa. (Seattle)
Joined Nov 2003
3,926 Posts
You would have to see my graveyard of first tries!
There is a learning process in dismantling them little buggers.
Some are just a pain in the AAAAAAA
Getting a bearing motor seems to be the luck of the draw.
Good luck on your adverture
Scott
Littlescreamers.com
Littlescreamers is offline Find More Posts by Littlescreamers
Reply With Quote
Old Jan 17, 2004, 11:07 AM
Foam Flyer
Depdog's Avatar
Stockbridge, Georgia, United States
Joined Jan 2003
2,931 Posts
I have to find some thick magnet wire. Thickest I have here is .016 (going to hit Rat Shack today, but doubt they will have what I want) I found some at Mouser (online). Any one got any suggestions on finding this stuff local? Who uses it in regular industry?

Watch out for those darn end bells. The top part that actually spins the C/D is a SHARP bugger on some of em. I now know where most of my mysterious cuts come from.

Glenn
Depdog is offline Find More Posts by Depdog
Reply With Quote
Old Jan 17, 2004, 04:10 PM
Registered User
Joined Mar 2001
2,625 Posts
Another possibility...

I found this in a defunct ancient CD-ROM today. It is tiny; compare it to the size of my wedding band in the top photo.

Tony Turley
t-turley is offline Find More Posts by t-turley
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
One hour CD ROM construction part 7 rysium Power Systems 806 Dec 18, 2006 02:58 AM
One hour CD ROM construction part 6 arx_n_sparx Power Systems 1050 Mar 10, 2005 07:08 PM
One hour CD ROM motor construction PART 4!! t-turley Power Systems 555 Jun 07, 2004 07:33 PM
One Hour CD ROM Construction Part 5 arx_n_sparx Power Systems 537 May 07, 2004 09:56 AM
One hour CD ROM motor construction PART3 rysium Power Systems 511 Mar 22, 2004 01:03 PM