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Re: Is 2875 RPM too much?

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Author  [Modern View]

07-08-2014 08:35:55

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It's a 1949 8N FM. The Tach is one of those hand held point and click Tach's with a piece of reflective tape on the fan housing. Is 2200 at idle?

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Bruce (VA)

07-08-2014 08:46:13

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 Re: Is 2875 RPM too much? in reply to ratface, 07-08-2014 08:35:55  
" Is 2200 at idle?"

You're kidding, right?

2200 is max rpm.

It should idle below 500 rpm; 400 is the goal.

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07-08-2014 09:56:52

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 Re: Is 2875 RPM too much? in reply to Bruce (VA), 07-08-2014 08:46:13  
2875 is max RPM, I didn't measure the low side. I will do that next time I can work on it. The gizmo for measuring is pretty cool, just point and click. States the margin of error is +- .05%. I think I will measure a known value to see if this thing is accurate. The tractor just sounds right where it's at. Your point about low rpm is well taken, perhaps it's too fast from the git-go. I've fooled with so many adjustments I might not have put the idle screw back to where I started?

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Roger in Iowa

07-08-2014 16:43:58

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 Re: Is 2875 RPM too much? in reply to ratface, 07-08-2014 09:56:52  
To check your hand held optical tach, point it at a florescent light. It should read 7200+or-, if your tach goes that high. Good way to check them.

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