12V fans query
I used to turn my bicycle upside down and spin the devil out of the rear
wheel and then slam on the brake.I own a 1961 made in Germany moped with
sixteen original miles on it, it has bicycle pedals on it.
You can rig up an old computer hard drive motor if you want to make your
own wind speed aeronometer.I saw how to do it on the internet.
cuhulin
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