ChrisMarx
New Member
- Aug 20, 2019
- 10
- Boat Info
- 1999 Sea Ray SunDeck 240SD
- Engines
- 5.0 Merc EFI
First prop I tried from a recommendation, Apollo 3 15.5 x 17P stainless steel. 45mph, but hit about 4900 RPM really quick. Hole shot was great, but prop caused vibrations I didn't like.
Next prop: Apollo 3 14 x 19P. This one is close to the Merc Vengence but has more cupping which makes it load up more. I hit 45mph at 4500rpm. Water was rough. I suspect I could hit 48mph on glass and a light load. This one I'm keeping as a prop to use for longer cruises on Lake Cumberland.
Third prop to try just arrived. Solas Rubex HR4 14.25 x 17P. I'm looking for a ski prop. I suspect this one to perform like the 15.5 x 17P but smooth. I'll test this one in a couple days doing a knee board. It should be close. Cupping and rake isn't as much as the Apollo 3 14 x 19P. The four blades should provide more thrust and about 8% slip vs 10-12% slip with the 3 blade. 4 Blade props typically give more stern lift for slower planning. I'm looking for about 15mph with a nice swell for the board.
Next prop: Apollo 3 14 x 19P. This one is close to the Merc Vengence but has more cupping which makes it load up more. I hit 45mph at 4500rpm. Water was rough. I suspect I could hit 48mph on glass and a light load. This one I'm keeping as a prop to use for longer cruises on Lake Cumberland.
Third prop to try just arrived. Solas Rubex HR4 14.25 x 17P. I'm looking for a ski prop. I suspect this one to perform like the 15.5 x 17P but smooth. I'll test this one in a couple days doing a knee board. It should be close. Cupping and rake isn't as much as the Apollo 3 14 x 19P. The four blades should provide more thrust and about 8% slip vs 10-12% slip with the 3 blade. 4 Blade props typically give more stern lift for slower planning. I'm looking for about 15mph with a nice swell for the board.
I'm looking into this also. Mine is a 99 with 5.0 EFI Alpha One. The Merc prop selector wasn't much help. Turning Point has a more detailed selector, plus with an option to have them review it. You can also exchange props for $35.00. I waiting to see what they say. The selector said a 14.5 x 15, but this seems small to me since I have a vengeance 14 x 19. I can hit 45mph GPS with only two in the boat and smooth water. Most of the time it's 43mph.