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User Name	Thread Name	Subject	Posted
GUEST,ThatGuy	Governor fault, small 2-stroke generator (24)	RE: Governor fault, small 2-stroke generator	26 Aug 07
>> The shaft speed HAS to be a constant 3600 RPM to generate 60 hz (or 3000 RPM for 50 hz). > Incredibly brilliant observation - for ca. 1940; but most alternators now have more than one pole. Actually, all small AC generators have exactly two poles and have a shaft speed of 3600 RPM to achieve 60HZ. Some small gensets cheat and run slightly faster to compensate for droop. Larger gensets have four poles and turn at 1800 HZ. > - Ever hear of Mr. Maxwell? > - Helmholtz? > - differential calculus? Ever hear of a shop manual? They are loaded with practical answers to how gensets work. You can find one at a book store or library.

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