Posts: 3508
Location: Elk River, Minnesota | Hiya,
I think you can stay with a 3 blade without too much issue. Your boat weighs alone at just over 1400, and that is a very common weight with a 115 hp motor on it. The boat is rated to 150 if my research is correct. With your aluminum now at 5500 rpm and speed of 38 to 40...I'm assuming that is with the 3 guys and gear? If so, that probably is not too far off as the max for the f115 is 6000 and would happen under light load. How are RPM's when you are by yourself with just your gear and how well does the motor trim the boat?
Steve |
