I have a 1970 searay, and it is restored. It is a light boat, 17' long, and the new engine is a 1992 yamaha 115. I had a 1974 johnson 85, and I got a new hub to reuse the prop. It is a 13.25 x 15. I also noticed that the gearcase on the new yamaha is slightly bigger.
Anyway, the 15 pitch prop cant even be used as a baseline because i hit 5500 rpm at about 1/2 - 2/3 throttle (i think).
I knew I would need a new prop, and I plan to use the 15 pitch as an emergency backup, but I am not sure what size to get.
I boat at the yough lake and could not find any marinas that allow prop testing there or at deep creek lake.
I am worried about picking the wrong one, and wasting lots of money. My guess is that I want a 13 x 21, but thats just a guess.
Please advise me. I want a stainless prop.
Thanks in advance,
- Vegard
Anyway, the 15 pitch prop cant even be used as a baseline because i hit 5500 rpm at about 1/2 - 2/3 throttle (i think).
I knew I would need a new prop, and I plan to use the 15 pitch as an emergency backup, but I am not sure what size to get.
I boat at the yough lake and could not find any marinas that allow prop testing there or at deep creek lake.
I am worried about picking the wrong one, and wasting lots of money. My guess is that I want a 13 x 21, but thats just a guess.
Please advise me. I want a stainless prop.
Thanks in advance,
- Vegard