Thread: RPM Question
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  #13  
Old 09-23-2013, 08:39 PM
randallc randallc is offline
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Join Date: Jul 2013
Location: Witcherville, Arkansas
Posts: 57
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Got my photo tach in and set it up on a Farmall Cub and it seems to work great from 474 idle to 1784 open. They are suppose to idle at 500 rpms and advance to 1800. Easy to work, put in a battery, put a 1/2 inch of the reflective tape on the subject and hit the test but and read.
I don't have any other rpm method to test it on, but will take it to a CubFest and try it out to compare to someone else's.
At least I can now get an idea. My 1250 doesn't seem to crank 3600 rpms and my 109 seems to turn more. Will not open it up. My 1000 seems to be right on but will test them now with the photo tach.
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