Hello all. I've been lurking these boards for a while and find all the information very useful. Im looking for a prop that will give me a little more top speed...just for the sake of going fast. I currently have a 13ft Aksano power cat. Boat and motor weigh 780 lbs. it is a tunnel hull and 70 inches at the beam. Its powered by a 50 hp etec with a gear ratio of 2.67 and rpm range of 5500-6000. I mostly use the boat to cruise and fish but sooner or later will try some watersports. I currently have a stamped Evinrude sst prop that is 13 7/8 x 15. with one person on board it hits about 5950 rpms and top speed is 32.5 mph (gps) the drop off with 2 people is about 100 rpms. i usually have 8 gallons of fuel. The boat planes in about 2 seconds or less with one person and holds it at 3500 rpms and 15-16 mph (gps). I feel this would be a good prop for watersports. What I am looking for is a prop that will give me more top speed. The manufacturer claims speeds of 40-45 mph but he favors Hondas which have a different gear ratio. I realize i will have to lose hole shot but thats ok. I want two props so i can do different things. I also have a 13.25 by 17 aluminum prop which came with the boat which if memory serves runs at about 5700 rpms with two people on board. I don't know top speed. I saw a test somewhere on the internet with my same setup and 13x19 aluminum prop which gave 37mph at 5500 rpms. that would be fine. Just looking to see if there is a prop with better geometry that would get me the speed and keep me in my rpm range. Thanks for any and all help.
Rich
Rich