DownToFish1
Recruit
- Joined
- Mar 2, 2014
- Messages
- 3
Hello, I have a 1984 24 ft rampage express with a 5.7 300 hp I /O alpha 1 .. Currently I am running a 14 1/2 x 17 3 blade . I can only get the boat rpm to 4100 @ 28.5knots. It will cruise at 19 knots @ 3400 rpm burning approx 1 gal per mile. Which seems very bad for economy. I also have a hard time maintaining cruising speed in seas. Boat will drop down to 15.5-16 knots. This prop was on my boat when I purchased from previous owner.
I found the original paper work specs on this boat. The original prop the came on the boat new was a 3 blade 15 1/4 x 15. Said the boat goes 37.5 mph @4650 rpm. I am looking for advice on the best prop. Should I try the original prop ? I am also considering a 4 blade I like the benefits of the extra blade in the water
Any advice is much appreciated thank you !
I found the original paper work specs on this boat. The original prop the came on the boat new was a 3 blade 15 1/4 x 15. Said the boat goes 37.5 mph @4650 rpm. I am looking for advice on the best prop. Should I try the original prop ? I am also considering a 4 blade I like the benefits of the extra blade in the water
Any advice is much appreciated thank you !