h a l f b a k e r yThere's no money in it.
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Ideal for bike riding on windy days. Output is wirelessly transmitted to a wristwatch and/or cycle computer.
Savonius turbine
http://en.wikipedia...vonius_wind_turbine
[normzone, Jul 31 2007]
Anemometer
http://en.wikipedia.org/wiki/Anemometer
[jutta, Jul 31 2007]
[link]
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Storm chasers would be another likely market |
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What's the point of mounting the anemometer on the rider, rather than anywhere else on the bicycle? |
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Because then it could be used for running, walking, skydiving or even just standing around carefully noting meteorological data. |
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[+] sheer apical meteorologeek effect |
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(While waiting for the bus)"Funny weather we're having today" |
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"Indeed it is. A South-westerly breeze of 4-5 knots for most of the morning, changing to North-westerly in the afternoon and rising as high as 18 knots" |
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"Do you work in IT by any chance?" |
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Except you can't get directional information out of a Savonius |
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Sure you can. Make it very slightly asymmetrical (like putting a flat tab on one side). Then watch the changes in rotor speed - when the tab is moving downwind, it turns faster, upwind slower. Since wind direction is commonly only reported to sixteen points of the compass, a low-resolution shaft encoder would be sufficient. |
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needs a better title, but a little nerd arrow points you toward the slowly spinning bun i'm giving you. + |
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Add a small generator and you can power a pair of nose hair trimmers. |
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Reminds me of a movie I saw years ago. Sean Connery is sailing on the open sea at considerable speed. His companion, probably a jaunty young lady in 60s-style bikini and boufant, inquires about the wind direction. Sean licks a finger and places it in the air. He then points in a direction not entirely dissimilar to the direction in which he is travelling and says, "From over there." |
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Why not go the whole hog and use a helmet mounted laser anemometer? |
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Because, in the words of the man himself, we must add lightness and simplicate. |
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