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#6 drive question
Ok guys, i used to have a Baja H2x with the 454 and bravo so i dont have much knowledge of the higher HP set ups. Ive been looking at boats (plan on getting a 42-47 in a few years) and alot have #6 drives and some of the #6 drives have "cavitation" tubes sticking out the top...What do these do? Thanks
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They let air into the prop thus slipping enough to allow engines to build enough rpm to get on plane when running a high ratio and large prop set up.
Like doing a burn out at the race track,our boat pops right out of the water at approx 4800 to 5000 rpms. Once on plane you there is know longer any additional slip attributed to the tubes. We run 1.24 ratios and 36 to 37 17" 5 blade cleavers. Without tubes you need three people on the bow to plane her out we tried it one time without tubes! |
Sweet, makes sense. Thanks!
so i guess if it doesnt have vent tubes they figured the setup with gear ratios and props is good enough? The two boats im comparing as examples are a 47 fountain with 850s and #6s with no tubes and a 42 fountain with 700s and #6s with tubes. Both 09s. |
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Originally Posted by WildWarrior
(Post 2846908)
They let air into the prop thus slipping enough to allow engines to build enough rpm to get on plane when running a high ratio and large prop set up.
Like doing a burn out at the race track,our boat pops right out of the water at approx 4800 to 5000 rpms. Once on plane you there is know longer any additional slip attributed to the tubes. We run 1.24 ratios and 36 to 37 17" 5 blade cleavers. Without tubes you need three people on the bow to plane her out we tried it one time without tubes! |
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