HammytheFisherman
Cadet
- Joined
- Jul 8, 2007
- Messages
- 17
Hey fellas. I currently have a used 1997 Astro 1700 bass boat that is 17' with a 1997 Mercury ELPTO 115HP on the rear. I am currently running a Merc Laser II SS 22P prop and turn roughly 4800RPM's at WOT and the engine plate states the max RPM's to be 5250. The engine seems to be mounted at the correct height and when properly trimmed and fully loaded, I achieve 45-46MPH WOT according to GPS.
I've spoken with other boaters who seem to get in the mid 50's with their 115's WOT. What numbers are others with 115's turning? I have been thinking about dropping to a 20P prop to see if that can give me the extra 400RPM's I need to reach my engines max RPM rate. Does anyone have any specs on this particular motor or boat that might help steer me in the right direction. Its not a huge deal, but I feel as though I am losing 5-10MPH due to my prop. If not the prop, then I have no idea what could be causing the speed loss.
Any suggestions on the prop change or other help? Or is anyone else running the same engine that can give me an idea as to what MPH I should be achieving. Thanks!
I've spoken with other boaters who seem to get in the mid 50's with their 115's WOT. What numbers are others with 115's turning? I have been thinking about dropping to a 20P prop to see if that can give me the extra 400RPM's I need to reach my engines max RPM rate. Does anyone have any specs on this particular motor or boat that might help steer me in the right direction. Its not a huge deal, but I feel as though I am losing 5-10MPH due to my prop. If not the prop, then I have no idea what could be causing the speed loss.
Any suggestions on the prop change or other help? Or is anyone else running the same engine that can give me an idea as to what MPH I should be achieving. Thanks!