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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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Alternator speed
We have a 7 foot water wheel in a mountain stream and would like to hook up
an alternator, and light up the fish pond. Can anyone tell me what RPM it needs to turn to run one headlamp? Thanks Walt |