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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
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