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-   -   Checking RPM with a fluorescent lamp (http://forums.pelicanparts.com/off-topic-discussions/457498-checking-rpm-fluorescent-lamp.html)

cgarr 02-15-2009 12:28 PM
Checking RPM with a fluorescent lamp
 
Trying to figure out the rpm of my tool post grinder I made for my lathe: Is this correct? Power is 60 Hz to my fluorescent lamp, so the lamp flashes at 120 per second, if I get the white line on the grinding stone to stop I should be at 7200 RPM?

Zeke 02-15-2009 04:46 PM
That works out the same for me. I think you're right. I guess I can time my engine now at 7200 RPM :D


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