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Our ski club has a SN 200 closed bow that is mostly used for course skiing. I'm not sure of the exact year of the boat, but it's 5-10 years old. They're looking to try and increase top end speed to 43-45mph to accommodate some of the barefooters in the club, as currently the boat only goes 40mph at WOT. It currently has the stock prop which I believe is the Acme 1868. They're considering the Acme 654 or 422 as a replacement as both have a higher pitch and should offer some additional top end speed. Appreciate any insight from anyone who may have already gone through a prop selection like this for their SN 200.
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Pete, you may want to post this question of the ballofspray forum, if you do not get any answers here. -
I put a new prop on a 97 Sport Nautique last week with a GT-40. I don't know how the difference in boats would translate but here's my experience...
First, I don't know what I took off. Whatever was on there worked, but I wanted a spare prop, so I did the custom boat prop tool on Acme's site selecting large target wake, 0-2K ballast, and 0-3K elevation and it came up with the Acme 654 for me. Put that on and retired the old prop to backup status.
I wasn't sure what to expect, but I was blown away when I got the boat in the water last Sunday. Massively improved holeshot, improved acceleration through the entire throttle, and improved full throttle speed from about 42 to 45. The drivetrain is also silky smooth now with the new prop, where I had some minor vibrations in the floor at or near full throttle.Comment
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The Acme 1868 really is a wakeboard prop. At WOT the SN 200 would be way over on RPMs. Stock prop for that boat is the 422. I run a 654 as I’m at 4,500 feet altitude. I get 42-43 mph with the 654. I originally started with the 1868 as I wanted big hole-shot, but quickly changed to the 654. If I was at sea level, I would run the 422.
JQComment
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I'd suggest calling ACME and telling them what you are chasing after. They are very accommodating and will even customize it for you. They'll want to know if you have the 5.7 or 6.0 and what altitude you're at.
Nautique did change the recommended prop for the 6L engines My '12 6L came with the older recommendation. Switching to the newly recommended prop (next pitch up) gave me a few more MPH so I can foot the once a year I still do it.
Obviously you're walking a fine line between the right prop for footing vs. the feel you want for the course.Comment
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Thanks all.Comment
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