build a small wind turbine
materials needed to construct: No. 1
old bicycle: the only thing that needs work is the rear wheel.
No. 4 paint cans (empty) and cover about 20 cm high and 15 cm in diameter.
thin wire.
Realization.
Get on your bike and cut across the front at del canotto del sellino.
Rimarrà così solo il doppio triangolo posteriore con la relativa ruota.
Smontate (se volete ma non è importante) la pedivella.
Smontate la catena.
Togliete uno dei dadi della ruota posteriore e tagliate il suo triangolo di tubi che parte dal canotto dei pedali e da sotto l’attacco della sella.
La ruota è ancora libera di girare sul suo asse, tenuta stretta dal dado che la fissa al triangolo di tubi rimasto (praticamente avete ottenuto un monobraccio posteriore).
Prendete una latta vuota, e tagliatela lungo l’asse longitudinale in modo da ottenere due semicilindri “a cucchiaio”. Dopo averli tagliati ripiegare con attenzione (ed i guanti protettivi) by a pair of pliers, sheet inward, so that there are no sharp edges of any kind. The wind does not give anything but your hands.
semibarattoli After getting eight, count the pairs of spokes of the bicycle should be divisible by eight ... Now you have to set each
semibarattolo in at least three points: two on the same radius of which close to a circle, and third fixing to be done on a different radius, near the middle of the semicircle of the bottom of semibarattolo.
Drill two holes, one on this side and one side of the beam below and make a "seam" with thin wire, squeezing it with pliers.
This second fixing a triangle, make each jar on the wheel stable.
Now we have to fix the bicycle dynamo in such a way that its knurled pignoncino is in contact with the rubber wheel. It should be put on the opposite side of the bins, and a tube attached to the rear triangle of the bike (the only one left).
Please note that the generator does not press too much on the tire, otherwise the friction will be too high and that the GEN not work with very strong winds.
The second last thing left to do is assemble the wind turbine Naif (GEN) in a high position (at least 8 m in height) and in a location that is not disturbed by houses, trees or other impediments to the wind.
Now you must connect the generator (with a piece of electrical wire pole) to keep a light bulb somewhere in the house.
Wishing up a bit more performance, you can buy a dynamo more efficient than bicycles but, of course, spend more money. Conclusions
the GEN works only with the vertical axis of the wheel.
can also be used as an automatic indicator of the presence of wind.
The GEN is not recommended for people between Trieste and the Canosa and Candela.
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