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theslicksteve
11-26-2008, 05:43 PM
I'm new to the building of brushless motors so im not sure how good of find this is. On the local craigslist i see lots of free electronics for parts but i previously ignored copiers because im an idiot. Decided to pick up (yeah right 485lbs) a kinolta 7050 for free in need of repair. The teardown was awsome. i salvaged 15 Brushless motors from 40mm to 70 mm stator diam, 9 & 12 pole and assorted other goodies (35mw laser, 7" lcd screen, hv ion generators, fans, ect.). not sure how usefull for flight these are but what a find for FREE. Does anybody have an idea on possible power potential of any of these. there are pics in my photo gallery let me know what you think.

dbcisco
11-26-2008, 09:34 PM
These are out of computer CD drives. I have a box of these myself. Haven't found much help on the net for making them work except to tear them apart and re-wire them. No explanation of why they won't work the way they are. If I had a BL-ESC to spare (and risk destroying) I would experiment with them. Maybe someday when BL ESC's become low cost items I will mess with them.

CHELLIE
11-26-2008, 10:34 PM
These are out of computer CD drives. I have a box of these myself. Haven't found much help on the net for making them work except to tear them apart and re-wire them. No explanation of why they won't work the way they are. If I had a BL-ESC to spare (and risk destroying) I would experiment with them. Maybe someday when BL ESC's become low cost items I will mess with them.

Hi dbcisco :ws: if your looking for some cheap ESC, hobby king has tons of them, also you can get them cheap on EBAY,

http://www.hobbycity.com/hobbycity/store/uh_listCategoriesAndProducts.asp?catname=All+Speed +Controllers&idCategory=61&ParentCat=182

http://www.hobbycity.com/hobbycity/store/uh_listCategoriesAndProducts.asp?idCategory=61&curPage=2&v=&sortlist=

http://www.hobbycity.com/hobbycity/store/uh_listCategoriesAndProducts.asp?catname=TowerPro&idCategory=187&ParentCat=182

CHELLIE
11-26-2008, 10:40 PM
I'm new to the building of brushless motors so im not sure how good of find this is. On the local craigslist i see lots of free electronics for parts but i previously ignored copiers because im an idiot. Decided to pick up (yeah right 485lbs) a kinolta 7050 for free in need of repair. The teardown was awsome. i salvaged 15 Brushless motors from 40mm to 70 mm stator diam, 9 & 12 pole and assorted other goodies (35mw laser, 7" lcd screen, hv ion generators, fans, ect.). not sure how usefull for flight these are but what a find for FREE. Does anybody have an idea on possible power potential of any of these. there are pics in my photo gallery let me know what you think.


Hi theslicksteve :ws: check the ohm rating on the motor windings, then compair the can size and OHMs to a know motor that matches,or is close, that may give you an Idea of the possible kv for each motor, and power and match, and look at post 3 for some inexpensive ESC, hope that helps, Chellie

http://www.hobbycity.com/hobbycity/store/uh_listCategoriesAndProducts.asp?catname=All+Outru nner+Motors&idCategory=63&ParentCat=59

dbcisco
11-26-2008, 10:44 PM
I guess I'll have to get a couple of these ESC's! I've been wanting to play with these motors but the only BL/ESC I have on the shelf is a pricey one for a T-rex. Thanks for the links.

CHELLIE
11-26-2008, 10:50 PM
I guess I'll have to get a couple of these ESC's! I've been wanting to play with these motors but the only BL/ESC I have on the shelf is a pricey one for a T-rex. Thanks for the links.

Your Welcome :ws: Take care, Chellie

theslicksteve
11-27-2008, 01:01 AM
these are not cd drive motors they are usually aprox 20mm diam and 3-5mm thick these are 40-70mm and 8 to 25mm thick they are out of a large copier.

CHELLIE
11-27-2008, 01:31 AM
these are not cd drive motors they are usually aprox 20mm diam and 3-5mm thick these are 40-70mm and 8 to 25mm thick they are out of a large copier.

What voltage were they running on, if you know, and are there 3 wires going to the motor ???? I would be interested to know a little more about these motors, was that a minolta or kinolta copier

dont know if this will help or not, from what I gather, most of the motors are stepper motors or fan motors. and 2 to 5 phase motors, that may need a special controler, interesting though, I learn something new every day :)
http://www.alltronics.com/cgi-bin/category/153

http://www.alltronics.com/cgi-bin/category.cgi?&category=55&start=10

dbcisco
11-27-2008, 01:54 AM
As a general rule, computer electronics run on 5VDC for components and 12VDC for motors.

theslicksteve
11-27-2008, 03:58 AM
the small motors are 24v 1A the larger ones are 40v 2A all are 9 or 12 pole. it was a kinolta 7050 copier. there are pictures in my member gallary.

CHELLIE
11-27-2008, 04:59 AM
the small motors are 24v 1A the larger ones are 40v 2A all are 9 or 12 pole. it was a kinolta 7050 copier. there are pictures in my member gallary.

here are some links to motor rewinding, The motors the way they are, may not work, way to low on the amp rating IMHO

http://www.rcgroups.com/forums/showthread.php?t=666877

http://www.angelfire.com/blues/heli_project/brushless.htm

http://www.wattflyer.com/forums/archive/index.php/f-88.html

http://www.wattflyer.com/forums/showthread.php?t=35216

http://www.rcgroups.com/power-systems-13/

dbcisco
11-27-2008, 05:17 AM
The 24V@1A is 24 watts, pretty low to fly with. The 40V@2A is 80 watts marginal but where you going to get a 40V battery.
In any case the winding are not going to take more then the rated amps so rewinding is required to run at the lower voltages of RC batteries. as voltage decreases current increases for a given load. I assume this is why nobody uses these in RC aircraft as they are. I have ground based ideas for mine.

GreenAce92
11-27-2008, 06:19 AM
i salvaged a mini cd rom outrunner from my ps2 i think, or maybe from an old comp, but i remember there were 3 dots for where the winded wires connected to, you could see on the circuit board that 3 paths ended here by these 3 dots which were right under the motor, so im guessing if ya just hooked up a brushless esc to it that it would work...

man thats a great salvage! im jealous! lol

ron_van_sommeren
11-27-2008, 04:12 PM
... im an idiot ...Your words, not mine :D

... Does anybody have an idea on possible power potential of any of these. there are pics in my photo gallery let me know what you think.You have to remagnet them for torque (Neodymium magnets, www.engconcepts.net (http://www.engconcepts.net)) and rewind them for RC plane use. Then we're talking kiloWatts here. For reference, this Torcman 685 (http://http://www.torcman.de/motoren/tm685/tm685_e.htm) has similar size. I have to refer you to these diy motor builders (http://www.rcgroups.com/electric-motor-design-and-construction-361/) for a better power assessment, there are not many people that have built motors this size. I strongly suggest you start with a smaller motor first, to get the hang of it, before taking on these beasts.

I'm new to the building of brushless motors ...You have some reading to do :)

DIY motorbuilding 101, excellent articles, must read!
www.gobrushless.com/kb (http://www.gobrushless.com/kb)
-> basic overview (1-5)

An excellent dLRK winding tutorial by Dave North a.k.a. 'Timocharis':
Winding Distributed LRK Using The 24-gram Hexkit (http://www.rcgroups.com/forums/showthread.php?t=736580)

ClassicLRK winding tutorials
pictures:
LRK winding is easy.. Try it! (http://www.rcgroups.com/forums/showthread.php?t=523039)
Building/winding manual:
http://www.torcman.de/motoren/manuals/anl_eco_200e_scr.pdf

Tips and tricks, checks and tests, may save you from frying your controller:
http://www.rcgroups.com/forums/showthread.php?t=240993

The bibles:
http://www.aerodesign.de/peter/2001/LRK350/index_eng.html
http://www.powercroco.de -> English

Vriendelijke groeten ;) Ron

ron_van_sommeren
11-27-2008, 04:14 PM
Nice brushless motor animations and simulations:
http://www.rcgroups.com/forums/showthread.php?t=216928

http://www.rcgroups.com/forums/showthread.php?t=216928

theslicksteve
11-27-2008, 08:30 PM
ive done extensive research into rewinding and changing magnets in brushless motors before this find. I can design and build complex circuits with ease but am relitvely new to electric flight. Before LI-ion and Li-Po technology got cheap wasnt appealing to me. After purchasing my HZ super cub i'm hooked. thanks to wattflyer and its members posts like Ron, CHELLIE, & Greenace's for opening my eyes to the vast potential of electric flight and brushless motors ability to produce massive and efficient power (with a little work). I never really had a good use for them before that. i'm glad i found the best e-flight forum on the web. thanks again,
Steve

CHELLIE
11-27-2008, 11:13 PM
ive done extensive research into rewinding and changing magnets in brushless motors before this find. I can design and build complex circuits with ease but am relitvely new to electric flight. Before LI-ion and Li-Po technology got cheap wasnt appealing to me. After purchasing my HZ super cub i'm hooked. thanks to wattflyer and its members posts like Ron, CHELLIE, & Greenace's for opening my eyes to the vast potential of electric flight and brushless motors ability to produce massive and efficient power (with a little work). I never really had a good use for them before that. i'm glad i found the best e-flight forum on the web. thanks again,
Steve

Hi Steve :ws: I am Glad that Ron Chimed in, He is One of the Best of the Best, When it comes to motor building, Take care and have a Great Thanksgiving, Chellie

Ellis1
12-02-2008, 12:45 AM
This Great!

stevecooper
12-02-2008, 01:05 AM
Hi Steve :ws: I am Glad the Ron Chimed in, He is One of the Best of the Best, When it comes to motor building, Take care and have a Great Thanksgiving, Chellie
Ron's the MAN!:D bub, steve

ron_van_sommeren
12-02-2008, 11:20 AM
... For reference, this Torcman 685 (http://www.torcman.de/motoren/tm685/tm685_e.htm) has similar size...That link did not work, fixed it:
http://www.torcman.de/motoren/tm685/tm685_e.htm


Torcman 685 (http://http//www.torcman.de/motoren/tm685/tm685_e.htm) motor + belt drive in 1:2 Klemm 35 from www.torcman.de (http://www.torcman.de)
More huge models by Franz Schmid: www.fschwerelos.de (http://www.fschwerelos.de)

Bobby M.
12-02-2008, 01:57 PM
If they came from a printer/copier, they might be "stepper" motors.

ron_van_sommeren
12-02-2008, 03:29 PM
That would not be a problem because they will be rewound anyway.

Vriendelijke groeten ;) Ron

theslicksteve
12-04-2008, 05:01 AM
the motors are not steppers (I know the difference) some are 9 pole some are 12. All of them have controllers (useless) and are set at 1750 rpm or 3300 rpm except for the laser assembly it has a spinning mirror that runs at noisy 28,750 rpm. the smallest ones are still (stator) 40mm x either 9mm or 20mm a little big for the super cub. I need to go get a real radio so i can upgrade the cub and so i can start playing with these motors. Trying to save up the cash for anything better than the pz crap. I have plenty and more on the way so i need to get rid of some of them. if anyone wants one let me know.

PaperAirplane
09-20-2009, 01:41 PM
Are there any good videos to show how to make a cd-drive motor into an airplane motor?

Thanks,
PA

ron_van_sommeren
09-20-2009, 03:01 PM
http://www.youtube.com/watch?v=iHYlWKICkqc
http://www.youtube.com/watch?v=Ybb0Ysh0FRE

Motor rewinding 101, must read:
www.gobrushless.com
-> knowledge base
-> basic overview 1-5

Tips and tricks, checks and test, may save you from frying your controller:
http://www.rcgroups.com/forums/showthread.php?t=240993