You're working in the blind without a tach.
"JamesE" wrote in message
ups.com...
Hello, I have a 1993 16 foot Excel boat with a 1993 85 hp yamaha
outboard, and am looking to buy a propeller for it. Right now the
boat has a 13.25" x 17" propeller on it and I don't have a tach but
would guess the wot to be about 4500 to 4800 rpm, and the maximum rpm
for this boat is 5500. I was considering switching to a four blade
13" x 15" propeller. The propeller I am looking at is from ql marine
by Volvo Penta. Does anyone know anything about this brand, I've
heard of Volvo Penta but never of QL. Also the boat typically is
pretty loaded, usually near carrying capacity, a total weight of about
2500 pounds including the boat and engine. I want to switch props to
make make towing easier but I also don't want it to over rev or
sacrafice tons of top speed. The propeller I am looking at has the
replacable hub and is made of aluminum, I am not interested in
stainless steel because it is too expensive. So I would apreciate
your opinions on wheter or not this is a good propeller for this
boat. Thanks for your help. James