Sorry Bill you will not turn a 20 X 22 with a 1:5 gear in a 27 foot DE Not even close. You will need a 2:0 gear for sure.Buying a 230 yanmar rated at 3300 rpm.. I have access to a 1.5:1 zf 63a.. It's going to be turning a 20-22" prop .. 1.5" shaft..
Will the tranny work for a mostly lightly loaded boat?
correct you max wheel with a 1:5 would be about a 17 X 17 plus or minus 1"Ok. Thanks Larry.. I'm not set on a prop yet.. Still no way right ? So I should be absolutely looking for a 2:1? I'm pushing it cause it's a basically new 63a for $600.. It is what it is I want to do it right so if I have to pass I will