Prop size, again....

firepiper i ran some prop numbers ,if your engines are running correctly then u need 19 x 19 3 blade just like your prop guy told u .i ran you speed rpm numbers back to get a horesepower you are putting out , i come up with u are only producing about 225 hp .i am thinking you have an engine issue do oyu have the correctly sized holley fuel injection setup on those engines ,sounds as they are not getting the fuel they need .with your props know u shouldbe turning over 5000 rpms.

 

thanx ,but you are off the page.its a 50hp yamaha.cant use anything else.just changed the gearbox ratio"s.