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I got a 13hp Honda engine on my homemade mill. My band wheels are 17" dim.My ratio is 5 to one . Hope this helps.Note.I need to run WOT so I don't get waves. So maybe 4 or 4.5 to one might be a little better.I wont change my mill because it's working great at WOT.Maybe someone can help me out. I not the best with math. But the way I look at it my blade is running at 4533fpm.3200RPM engine speed X 17 inch wheel divided X 12 to get feet = 4533... Right

KbeitzThe forum caculator has you at about 3000 fpm =/-. It is located at the toolbox icon at the bottom of all the adds on the left of your screen. It does the math for you and for me and I would be losts without these types of caculators.gww

I got a 13hp Honda engine on my homemade mill. My band wheels are 17" dim.My ratio is 5 to one . Hope this helps.Note.I need to run WOT so I don't get waves. So maybe 4 or 4.5 to one might be a little better.I wont change my mill because it's working great at WOT.Maybe someone can help me out. I not the best with math. But the way I look at it my blade is running at 4533fps.3200RPM engine speed X 17 inch wheel divided X 12 to get feet = 4533... Right

Quote from: Kbeitz on July 12, 2015, 11:46:57 AMI got a 13hp Honda engine on my homemade mill. My band wheels are 17" dim.My ratio is 5 to one . Hope this helps.Note.I need to run WOT so I don't get waves. So maybe 4 or 4.5 to one might be a little better.I wont change my mill because it's working great at WOT.Maybe someone can help me out. I not the best with math. But the way I look at it my blade is running at 4533fps.3200RPM engine speed X 17 inch wheel divided X 12 to get feet = 4533... Right 3200 engine rpm / 5 to one ratio = 640 wheel rpm17" dia wheel X 3.14 / 12 = 4.45 ft per revolution of wheel640 rpm x 4.45 ft/rev = 2848 ft/minAssuming that I understand your rig.

Did you guys notice me over here in the corner silently nodding my head in solemn agreement as if I knew what you were talking about?Numbers... I'm very glad there's so many capable members on this forum.

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