Posted by John T on April 20, 2010 at 05:58:03 from (66.244.97.31):
In Reply to: Generator? posted by Vern on April 19, 2010 at 21:08:18:
Its possible for an ammeter to get a rusted and stuck needle movement especialy if water got in, see if Bob M's method of passing a magnet past its face causes it to deflect which it should unless its indeed stuck.
As long as the battery voltage is rising at fast RPM versus what it is setting (from 6.3 to 6.5 to 7 on a 6 volt system or from 12.6 to 13 and 14 or so on a 12 volt system), shes charging since even a stuck needle ammeter is still a continuous circuit. An "ideal" ammeter would have zero resistance through it, its a passive series device.
You may be able to free up the needle or else you have to get a new ammeter or just live with it as is.
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