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Hi Hi
Sent: Wednesday, June 12, 2013 8:35 PM
Subject: Re: LF: DIY WIND GENERATOR
I wonder if it will be Man enough for the
job?
On 12/06/13 18:50, Graham wrote:
If there is a stream , then all you
need is one of these back shot wheels
G.
Sent: Wednesday, June 12, 2013 9:38 AM
Subject: Re: LF: DIY WIND GENERATOR
On 11/06/2013 23:02, Markus Vester wrote:
The plan is to have the ebike
pull myself and the equipment onto some hilltop. Then mount wind
blades onto the front wheel, and get the kite up for a three-hour
VLF dash while topping up the battery on the side. Then roll
downhill and come home with the fully charged battery ready for
tomorrow ;-)
Marcus / LF
A beautiful concept.
Hardly marketable though. "With our ACME system you can can out (only on windy
days) preferably up a hill, and return using free energy". :-)
The wind is a fickle
beast. We did 6 Months touring France using only wind energy for electricity
(some lowlife stole the solar panel early on) we were becalmed in the Vercors
mountains when we had to stay put, so no charging from the engine. The sun was
relentless and started forest fires. In the last week of the tour there were
gales, screaming generator, fully charged batteries and 20 Amps to dump day in
day out.
Wondering about Eddies
remark on the rpm mismatch between propeller and alternator - what
would be the optimum frequency range for either side?
I
Yes, Christian also noted the apparent lack of
gearing. With the use of a car alternator which was not designed for the job
it is very difficult to get efficiency. All alternators have a 'cut in speed',
horrible term, in RPM, which in wind generators is stated in wind sped
(knots).
My 20Amp Wind Generator has a cut in speed of 8 knots, its rated
at 20Amps but you have got to have a 60 knot wind to reach that.
It is
definitely not as easy as putting a fan on the shaft of a car alternator to
produce a "HOME BREW WIND GENERATOR 12V/100A"
73 Eddie
G3ZJO
--
73 de pat g4gvw
es gd dx
qth nr Felixstowe
East Coast UK
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