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Old 08-29-2012, 05:32 PM
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BigFish BigFish is offline
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Join Date: Jul 2008
Location: chesapeake, va
Posts: 2,345
You, in fact, want to adj. the top rpm's with the blade rotating it's the only way to get an accurate reading.
The blades being engaged is not considered a load. It is a parasitic load, and should be accounted for when setting the top no load speed, which, by the way can be set to any rpm you want on your personal mower. I like to keep my unit at 3500 or so.

Blade tip speed/ rpm charts based on blade length/ cutting dia. are online.
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