Lister Engines > Lister Based Generators

Alternator Hz tip

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Jordan:
I heard a suggestion for fine-setting of engine speed to obtain the required Hertz.

Assuming pulleys of theoretically near-correct ratio are installed on engine and alternator shafts:
Paint a white line on the alternator pulley, so that with a lamp shining (powered from grid, on a house circuit for example) the line will appear stationery when correct speed is achieved.
It's the same principle that was often seen on hi-fi record player turntables.
Has anyone else heard of this method?

BruceM:
https://www.amazon.com/Neiko-20713A-Digital-Tachometer-Contact/dp/B000I5LDVC/ref=sr_1_4?keywords=rpm+meter&qid=1561304547&s=gateway&sr=8-4


Plan B

mike90045:
But that requires you have stable Grid power to check it with.   Which is fine if you are on grid.  I use the frequency meter on my inverter to set no-load to 63hz, and full load ends up at 58hz

BruceM:
It's going to be difficult to use an incandescent bulb as a strobe; there is too much heat retention in the tungsten filament, even with a dark room.   Buy the tachometer.

Jordan:
I've gotta try it, as all it needs is to paint a line on the pulley.
It would be fun if it works (maybe better under fluoro light?), and could be handy as it's always there.
I shall report!

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