hi guys. im new to conveyor repair and new to this forum. i need a little help. i've got a speed reducer with an input/output rpm ratio of 37.5/1 my output pulley is 8 inch dia increasing to a 12 inch dia on my head spool. the driver is a 3775 rpm ac motor. what are my rpm's on the 12 inch & what's a good rule of thumb to figure this problem out next time? Thankee much
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