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Rahai vawt anyone?
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23
comments (23 topical, editorial)
Re: Rahai vawt anyone?
(
3.00 / 0
) (
#19
)
by john j on Sun Mar 16th, 2008 at 01:52:32 PM MST
(
User Info
)
Thanks Tom, Ill try and reduce
Cheers, john j
[
Parent
]
test rig turning, pics
(
3.00 / 0
) (
#22
)
by john j on Fri Apr 4th, 2008 at 02:53:42 AM MST
(
User Info
)
Just got the stoneage vawt up. There will be more sets of wings to come. Just wanted to see how it reacts. It starts turning with very little wind. I tried to measure resistance in the very heavy bearing. If I measure correctly, turning of the hub and bearing takes 29 volts and 0.05 amps. Cost so far: about 100 US$
Cheers, john j
[
Parent
]
Re: test rig turning, pics
(
3.00 / 0
) (
#23
)
by ghurd on Fri Apr 4th, 2008 at 07:43:19 AM MST
(
User Info
)
Probably work a lot better if the top is covered.
Just for a quick test, maybe slap a piece of 3/8" plywood on top with tarp straps?
G-
[
Parent
]
Re: test rig turning, pics
(
3.00 / 0
) (
#24
)
by john j on Sat Apr 5th, 2008 at 05:21:33 AM MST
(
User Info
)
Yes I think youre right. Only its hard to know any difference, as I dont have an alternator yet. And even then, how would you measure output? Thanks anyway.
Cheers, john j
[
Parent
]
Rahai vawt anyone?
|
23
comments (23 topical, 0 editorial)
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