Originally Posted by SabrToothSqrl
(Post 4804775)
very, very... VERY expensive. you gain less drag in the water, higher top end, higher efficiency, however the parts are CRAZY priced, props are the cost of your left arm, right foot, and first born. Parts are also not plentiful. Acceleration is slower. docking is much more difficult I'm told.
I'm gonna stick with my Bravo 1st since I can get parts anywhere from ebay to amazon and walmart. summer is too short to wait on parts... but if you have the funds, and really want to go fast, go for it! |
Originally Posted by green lightning
(Post 4804905)
How can you say acceleration is slower ?
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Do you realize that the cost of doing the conversion to surface drives would cost more than the boat will ever be worth?? Like 40-50k???
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Originally Posted by CDShack
(Post 4804954)
I think he means 'hole shot'. Because they cavitate/ventilate when you hit the throttle, they are somewhat slower (depending on prop) than a sterndrive from a standing stop, but with a little practice, I got my Kaamas up within about a second of the sterndrive, but made up the distance fast!!! Acceleration once hooked up? Awesome!
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Originally Posted by green lightning
(Post 4805056)
Most of the time when you hole shot a bravo drive with any kind of power you stop accelerating real quick
Haha! TOUCHÉ😂 That's why im running an xr drive with 310hp😂 full throttle sends! |
Surface drives are going to provide slower acceleration until the prop ventilates. A surface drive is meant to have half the prop out of water. So when the prop is submerged it is like starting a car in second gear. That is why you see vent tubes for some surface drives. It helps reduce the bite of the prop and is like putting it in low gear.
Surface drives are good for high speeds and efficiency |
Originally Posted by SasquatchWA
(Post 4804768)
I’m looking to learn more about surface drives, I’ve been all threw out google going down a bunch of warm holes but really not coming up with solid info on how I would acquire a set..
Yes I have also used the search here on this forum thanks for any help If your boat is weighs less than 5k PER DRIVE, I would suggest staying with bravo's (find some good X drives, or IMCOs, etc with the big prop shafts). Bravos are good as long as your boat is light enough. I had a 31' with twin B1s, and 502smags. Stepped on the mags a little with computers, injectors, and headers. Never had an issue, but she was a balsa cored hull and total dry weight was 5800 lbs. With that low of a drive loading, and a little bit of careful throttle action, I never had a drive issue. in 690 hours of fun. I even launched her a few times (whew, lucky me though). You can replace your Bravos a couple of times or even go with some of the bigger drives that are available and still beat the Arneson drive costs. For a big boat like mine, surface drives are the only real option. For you, please do your research. Good luck! jeff |
Originally Posted by justfishing
(Post 4805238)
Surface drives are going to provide slower acceleration until the prop ventilates. A surface drive is meant to have half the prop out of water. So when the prop is submerged it is like starting a car in second gear. That is why you see vent tubes for some surface drives. It helps reduce the bite of the prop and is like putting it in low gear.
Surface drives are good for high speeds and efficiency |
https://cimg2.ibsrv.net/gimg/www.off...4700a7fc7.jpeg
Arneson require a 18 inch prop to get on plane, I am happy with my set up. |
Originally Posted by justfishing
(Post 4805238)
Surface drives are going to provide slower acceleration until the prop ventilates. A surface drive is meant to have half the prop out of water. So when the prop is submerged it is like starting a car in second gear. That is why you see vent tubes for some surface drives. It helps reduce the bite of the prop and is like putting it in low gear.
Surface drives are good for high speeds and efficiency |
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