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Discussion Starter #1
So, the manual says that the 60HC deck turns at 3050 rpms. The blades are 21 inches long. Who here can tell me what the blade speed is??? What is the difference in blade speed and blade tip speed?
 

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I do not know the answer, but I believe that a pulley calculator might work for getting the answer.
 

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Using this calculator, I came up with this:

Blade_Speed_Calc.jpg

I don't know if it's what you're looking for, or why, or if the calculation is even correct.
 
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