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Bigger-box VAWT on real PM gen failed so far... | 21 comments (21 topical, 0 editorial)
Re: from cereal boxes to coffee cans ! (3.00 / 0) (#16)
by disaray1 on Sun Oct 21st, 2007 at 12:56:54 PM MST
(User Info)

 I get a can about every three months...Doc said 2 cups a day max.

 Two blades on this one and a three winger on the bench. The latest profile, "M" shaped..



 kinda looks odd but works very well. The next two blade can will have the blades supported in the middle, instead of the trailing edge. Looking for lift.

 Still having good, cheap, wholesome and caffeinated fun. :)

 David

[ Parent ]



Re: from cereal boxes to coffee cans ! (3.00 / 0) (#17)
by Norm (peppysue@suite224.net) on Sun Oct 21st, 2007 at 06:17:30 PM MST
(User Info)

Yes supported in the middle would be sturdier
and slightly smaller diameter it might go faster
Have you tried the threaded rod and nut method
to see how fast it spins?
Once you get a good design and stack enough of
them on top of each other you would get enough
torque and speed to drive a small stepper motor
....really !
            Have Fun !
             ( :>) Norm.
( :>) Norm
[ Parent ]


Bigger-box VAWT on real PM gen failed so far... | 21 comments (21 topical, 0 editorial)

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