| T O P I C R E V I E W |
| gotwind |
Posted - 04/07/2007 : 20:22:25
22 hours left.
I wouldn't pay more than £30 personally, the postage is £15 - it's up to you.
Don't worry I'm not bidding on it
Item number: 130129153378
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ih=003&sspagename=STRK%3AMEWA%3AIT&viewitem=&item=130129153378&rd=1&rd=1
The Futures Green - Getwind of it. |
| 9 L A T E S T R E P L I E S (Newest First) |
| ll81 |
Posted - 15/07/2007 : 13:11:54
This may be of use for 12v in a windy area. http://cgi.ebay.co.uk/24-DC-MOTOR-FOR-SCOOTER_W0QQitemZ140137772174QQihZ004QQcategoryZ75210QQrdZ1QQcmdZViewItem
or even this one http://cgi.ebay.co.uk/DC-Servo-motor-or-generator-24V_W0QQitemZ200128444971QQihZ010QQcategoryZ26209QQrdZ1QQcmdZViewItem
|
| gotwind |
Posted - 14/07/2007 : 20:17:18
I tried windscreen wiper motors a few years back, they are geared with a worm and wheel drive.
I was very disappointed - The motors are PM motors but need over 1500 rpm to hit any where near 12 volts, too higher revs for a prop.
Keep hunting guys, we will find something mainstream and suitable soon hopefully....
The Futures Green - Getwind of it. |
| ll81 |
Posted - 14/07/2007 : 15:40:30
They are brush type AC motors with a fed field winding, if you made a simple voltage sensing current controll to feed the winding with you would have a DC generator. The field winding will not want no way near as much voltage as when on AC as there is no inductive reactance to DC. I think a good motor to try would be the low speed 12v motors that power windscreen wipers. I'm pretty sure they are PM type and don't spin overly fast.
woo-hoo |
| Victor |
Posted - 14/07/2007 : 02:55:38
Anyone gave washine machine motors a try? |
| ll81 |
Posted - 06/07/2007 : 17:03:59
True, if you rewound the stator might get somewhere, alot of hastle though for a 100 Watt genny.
woo-hoo |
| gotwind |
Posted - 05/07/2007 : 21:31:43
Motorcycle PMA's spin far too fast guys - good idea though, maybee 2000-3000 rpms +
Watch out for motors that suggest a low rpm rating, they almost always have a reduction gearbox, i.e they are still high speed per volt motors.
Treadmill motors are the best option so far in the U.K - Ameteks in the U.S
Ben.
The Futures Green - Getwind of it. |
| ll81 |
Posted - 05/07/2007 : 20:46:07
Nah, I got my lucas C40 dynamo to play with. Have you thought of using the PMA flywheel alternator off of an old motorcycle. Most small motorcycles use a magnetised flywheel inside of or around a stator plate.
woo-hoo |
| Victor |
Posted - 05/07/2007 : 20:42:17
ll81
I hope you won that Item because I did not bid on it lol... I got the Dynohub and EDH dynamo the last time. Nothing worse if we all bid on the same stuff.
I`m still looking for off the shelf dynamos and motors.I recently have been looking at disco light stepper motors and other motors they use for turning lights
found a 40 rpm motor 4 watts... from NJD in England..
I used to repair Disco lights at home.
|
| ll81 |
Posted - 04/07/2007 : 20:48:20
Thanks for that.
woo-hoo |
