Home › Forum › Ask A Member › Gear Ratio Question › Re: Gear Ratio Question

#35354
beerman57
Participant

    Unfortunately, I can’t test just by changing lower units, the new (small) L/U is long shaft. I guess I’ll run the older (big) L/U with my friends 4 cylinder 21" pitch prop. One prop shop in north Georgia says it won’t go, will just "dig a hole", I think he’s wrong. If my QD11 could turn a heavy, high pitch 2 blade brass prop, why wouldn’t a 40hp (soon to be 50hp) turn a 3 blade SS prop? Of course what I wanted to run was a 2 blade, 25" pitch SS prop, but I guess it’s a 6 cyl. prop and can’t be rehubbed to 13 spline.