Sawblade HD HAWT
By margusten, Section Diaries Posted on Tue May 30, 2006 at 12:27:44 PM MST
Windmill made from scrap. Not my first project, not my last one.

My first windmill was 250W WAWT, (actually I'we seen only 15W) Built less than 1 year ago: You can see also HD HAWT (made from HD magnets and coils) and wind-meter on picture. First real windmill made from A3 Matrix printer stepper motor. Needs wery low winds to start (1 m/s) because blades are oversized and stepper motor has gearbox. I can get up to 40V and 0,16A from it.   Now I am building this sawblade mill, wonder if this thing can reach 200W: I have idea in mind to use uncommon stator. But next time about this idea.

Sawblade HD HAWT | 4 comments (4 topical)

Re: Sawblade HD HAWT (3.00 / 0) (#1) by pepa on Tue May 30, 2006 at 09:06:40 AM MST

double up on the blades by spot welding at the offset tooth area for strength and to prevent the blade from warping. the extra metal will help with flux leakage out the back do to flux saturation of the thin high tempered blade. works for me, pepa.

Re: Sawblade HD HAWT (3.00 / 0) (#2) by Ding123 on Tue May 30, 2006 at 11:53:46 AM MST

I hope this helps. I built a gennie from sawblades and it is working fine. If you have to drill any holes in the blades you are going to have a hard time. I didn't double up on them and I am not having a problem. You can check through my files for other pictures of this .

Re: Sawblade HD HAWT (3.00 / 0) (#3) by margusten on Wed May 31, 2006 at 06:09:27 AM MST

Thanks for all good recommendations. I have 2 plywood discs to support this sawblade. Yes I have to drill 4 holes to sawblade. This is my stator idea: You can see stator made from 2 windings on picture. I believe 200 windings or 400 is OK. There is space for second phase also. Margus from Estonia Location of Estonia is near Sweden and Finland, my place is less than 15km from sea.

Re: Sawblade HD HAWT (3.00 / 0) (#4) by electrondady1 on Wed May 31, 2006 at 06:29:46 AM MST

hello margus, i am also experimenting with hd magnets and intend to use saw blade at some point. may i make a suggestion , instead of using 1/2magnets verticaly as you have shown in your photo lay them out doubled to give them a more rectangular shape [ Parent ]

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