Jan 27, 2004, 11:28 PM
CD-ROM Junkie
Art Newland's Avatar
avance_x
looks like a 2mm shaft?
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Jan 27, 2004, 11:40 PM
"Simplify, then add lightness"
Art,
Mine is from a 48x creative cdrom. I am using 14 turns of #26 with the stock magnets. I used the 3mm head guide rod as a shaft and have turned the end down to 2mm like I said. I put in 3mmx6mm ball bearings from an old GWS IPS gearbox. I am using 2-cell Etec 1200mah. On a HB with stock blades, and an 11 tooth pinion, I was getting well over 20 minute flights. I cut down the blades and went with a 14 tooth pinion to get higher head speed. I think I cut them too much. I am only getting around 17 minutes now, but the control is much better.
Jan 27, 2004, 11:58 PM
CD-ROM Junkie
Art Newland's Avatar
jeffs555
I was wondering if you were using a head guide rod, those things are pretty tough to grind on. Hobby Lobby sells 3m brass tube and a 2mm that will slip inside the 3mm, why wouldn't that work?
Jan 28, 2004, 06:49 AM
"Simplify, then add lightness"
Art,
It has been so long since I did it that I can't remember how hard it was to grind it down. I would think the brass tube would probably work ok.

Jeff
Jan 28, 2004, 08:26 AM
Registered User
Vince Herman's Avatar
I am placing a bulk order for magnets to use for these CD-Rom conversions. I am in Ohio, so shipping to North America would be affordable (probably $4 in the USA). I am getting the 5 x 2.5 x 1 magnets from engconcepts.net
These let you get closer tolerances than the 5x5x1 flat magnets. Roughly 24 magnets will fit around the inside of a CD-Rom motor. 30 would cost about $2.40 plus shipping. Larger orders would not increase the shipping. Let me know if anyone is interested.
Vince
Jan 28, 2004, 08:36 AM
I see the future.
Yukonho's Avatar
Thinking about magnets for a conversion. I am hoping to find 2mm thick magnets though. I guess I could stack them.
Jan 28, 2004, 09:13 AM
Registered User
Vince Herman's Avatar
If you have the room, they do have 5x5x1, 5x5x1.5 and 5x5x2 mm on their web site.
engconcepts.net
Affordable product and inexpensive shipping. Just what I like in a supplier!
Jan 28, 2004, 10:33 AM
CD-ROM Junkie
Art Newland's Avatar
I've ordered some 5x5x1 N45's from http://www.engconcepts.net/ as well. I'm having very good success with the stock magnets in the old Hitachi drive motors I'm using, but want to try better magnets just to see what happens.
Jan 28, 2004, 10:38 AM
CD-ROM Junkie
Art Newland's Avatar
BTW, Thanks jeffs555, for your insites.
Jan 29, 2004, 12:08 AM
Registered User
avance_x's Avatar
Quote:
Originally posted by Art Newland
avance_x
looks like a 2mm shaft?
It's 2 mm! Originally it came with 2.5 mm shaft, I just removed the brass bushing rebore the hole and plugged in 2mm ID bearings.
The can which holds the magnet are not from the original CD-ROM motor but from one of the brushed motor that was soldered to the CD-ROm board. I just took a 2mm shaft and soldered on brass bushing of that can, simple!
Jan 29, 2004, 05:48 AM
Registered User
Supersix's Avatar
what do you guys use 4 a speed controler??
Jan 29, 2004, 05:55 AM
Registered User
I use Phoenix 10 with my CD-ROM motor on piccolo and
it works really great!

for some pictures and more info have a loot at

http://www.cs.auc.dk/~srba/rc

Jiri
Jan 29, 2004, 08:08 AM
CD-ROM Junkie
Art Newland's Avatar
Nice job jiri,
I've tried cc-10, cc-25, and cc-10 micro. All seem to do a good job running the cdrom's. I'm surprised at the low number of turns you guys are using, especially with 3S lipo's. Art
Jan 29, 2004, 11:03 AM
CD-ROM Junkie
Art Newland's Avatar
avance_x
that's some nice tinkering! I may have to try your idea on a tiny 9 pole brushless I've been saving.
Jan 29, 2004, 02:31 PM
Registered User
mdttb's Avatar
Hey Art here's the two CD-rom motor I have to work with trying to figure out how to stator off


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