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Jun 13, 2004, 11:59 AM
MeVs Gravity, Gravity won
Jarg's Avatar
Question

brush less motor


i know, its mad, havent even got my Aerohawk yet (in the post from canada), but going through some old elecronic bits o found the guts of a old belt driven turn table, and its motor was some where in the mess, have opened it up and removed the circut bord areound it,

i think it would be easer to get my parents to get a old cd/hd from work so i can use the motor in that. But all the same, the motor i took out weighs about 70g (to heavy?) and i can't seem to get it to work, but hears a pic of it,

any sugestions, i don't think it will ever work as it was desinged to turn at 33 or 45 rpm .

if not ne one know ne good instructions to make a brushless, also where can i but the eletronics to make a brushless work

thanks

Jarg
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Jun 13, 2004, 12:35 PM
micro mechanic
aerohawk1's Avatar
Sorry,dude,but the picture is not of a brushless motor.The things in the white cap are the brushes.If it won't work,it is probably no good.

Aerohawk1
Jun 13, 2004, 12:35 PM
"Watch this!" SMACK!
jaggies's Avatar
I don't know which motor the aerohawk uses, but it's likely a modern speed 300-class motor. Doesn't it come with the motor?

Anyway, the motor you show was probably not under as much load as a heli would demand. For one things, the brushes are way too wimpy. If you open a speed 300 motor you'll see what I mean. Also, the windings are made of very fine wire. High torque motors often use much thicker wire (or lots of thin wire in parallel).

If you're interested in getting a cheap brushless motor, check out this website:

http://www.gobrushless.com/

My friend says you can build one for about $20. Don't know if this will work in the aerohawk. He bought one of the kits for his airplane.

Your best bet is to go with one of the CastleCreations Phoenix series brushless ESCs. You can get them directly from http://www.castlecreations.com or most hobby stores that carry brushless.

--jim
Jun 13, 2004, 12:44 PM
MeVs Gravity, Gravity won
Jarg's Avatar
thought it look like a rubish motor, will try to get some from a cd rom or hd (could i use motors from floppy drives as well)

will post more on this thread in time

Jarg
Jun 13, 2004, 12:52 PM
"Watch this!" SMACK!
jaggies's Avatar
You wont be able to use the CDROM, HD or floppy motor stock as far as I know. Check out the above site for ideas...

--jim
Jun 13, 2004, 12:58 PM
MeVs Gravity, Gravity won
Jarg's Avatar
have had a look on

http://www.gobrushless.com/


i think it will get the :

GB Kit v1.15 Includes:

22.7mm Insulated Stator
Stock can for 22.7mm Stator
15-pk of N45 5mm X 5mm X 1mm Magnets
Stock Bearing Sleeve Holder
Stock Bearing Sleeve
Stock 3mm Shaft
3-Color Set (~25ft ea) of 26g Magnet Wire
2-pk 3mm X 6mm X 2.5mm Ball Bearings
Phoenix-10 Electronic Speed Controller

GB Kit v1.15... USD $68.89

some time down the line i will probably get this with a gyro (gy240?) and reciver

but first will need to learn to fly

Jarg
Jun 13, 2004, 01:14 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Quote:
Originally Posted by Jarg
... could i use motors from floppy drives as well ...
Yes. There have been discussions on this over in the 'power systems' forum. You can even do it direct drive:
https://www.rcgroups.com/forums/show...hreadid=197862
http://groups.yahoo.com/group/lrk-to...x/message/4831
http://groups.yahoo.com/group/lrk-to...x/message/4833

Met vriendelijke groeten Ron
diy outrunner discussion group
int. E fly-in & diy outrunner meet, Nijmegen, the Netherlands -> 2005
Jun 13, 2004, 01:19 PM
homo ludens modellisticus
Ron van Sommeren's Avatar
Quote:
Originally Posted by jaggies
You wont be able to use the CDROM, HD or floppy motor stock as far as I know ...
For a Piccolo you can:
https://www.rcgroups.com/forums/showthread.php?t=235391

Groeten Ron
Last edited by Ron van Sommeren; Jun 13, 2004 at 01:21 PM.
Jun 13, 2004, 02:35 PM
4-D traveller
glxy's Avatar
For the Aerohawk, there is a brushless alternative (Himax) for the main motor. The problem is the tail.

I've done the research lately, there is none brushless tail motor manufactured or on sell out there. It's hard to believe when so many helies are being flown...
Jun 14, 2004, 10:49 AM
homo ludens modellisticus
Ron van Sommeren's Avatar
Use a cd-rom motor for the tail.
Jun 14, 2004, 02:12 PM
4-D traveller
glxy's Avatar
I know that, and will try. But it's just daunting for me to do the rewinding and all the modification stuff.

Still, it's strange that no stock brushless helies are produced and available anywhere.
Jun 14, 2004, 02:17 PM
MeVs Gravity, Gravity won
Jarg's Avatar
from the manufactors point of view, to have it brushless you would need a new ecs and motor which could increse the cots of the heli up to $100,

if you are going to buy a heli and are new to it, you would but the brushed set up save $100 and get spairs, of buy your own motor that fits you, even better make one for about $20

Jarg


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