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OGDENS SUGAR BUSH
02-17-2008, 02:09 PM
does anyone know the formula for motor pulley speed = pump pulley speed??


RICH

Russell Lampron
02-17-2008, 04:40 PM
Rich,

What kind of pump are you asking about? If it a vacuum pump I don't know if there is a specific formula. It would depend on the rpms of the motor and desired rpms for the vacuum pump.

Russ

tuckermtn
02-17-2008, 04:43 PM
I seem to remember in the Grangier catalog there was a good chart talking about pully/sheave size on one end, size on the other, and different charts for 1750 vs 3400 RPM electric motors...not sure if you can access it online or not though...

petersp22
02-17-2008, 05:48 PM
I had to do similar math to re-pully some old woodworking equipment

multiply your engine/motor rpm time the pully diameter and divide that answer by the driven pully diameter to get your driven shaft rpm.

(input rpm*input diameter)/driven diameter=driven rpm

I think I got that right... I did it with a spreadsheet.

OGDENS SUGAR BUSH
02-17-2008, 07:40 PM
thanks everyone

PETER had the answer i am looking for. i tell you this site can answer every question out there again thanks to all

RICH