Hydrofoils on a 1974 70hp on 17' aluminum

[blueboat1]

I am running a 70hp on a 17' aluminum. It set up for fishing (2 batteries, 25 gallon bait tank, 24 gal fuel tank. heres my question. I can currently hit 32 mph (14X17 prop) i want to be able to get up on plane and run at about 18 mph. will a hydrofoil/dolphin fin what ever there called help with that? Is is true if you get a little air you can snap the cav plates off the lower unit? Any input is appreciated.<br />Thanks<br />scott

 

[cobra 3.0]

Re: Hydrofoils on a 1974 70hp on 17' aluminum

I have the stingray hydrofoil. Yes, it will plane the boat at much less speed. You may loose a little speed on your top end, but get a much stabler ride and quicker less slanted turns.

 

[walleyehed]

Re: Hydrofoils on a 1974 70hp on 17' aluminum

Tin can, The stingray is one of a few great hydrofoils, and I recomend it. I'm running 3 of them on different boats, and I CAN tell you if you loose top-end with the foil, the engine is not at the correct heighth on the transom.<br />dhadley got me straightened out on mine, and I actually GAINED about 3 MPH on my Starcraft.

 

[fishinlooney]

Re: Hydrofoils on a 1974 70hp on 17' aluminum

Tin Can <br /> I think the sting ray foil is the answer to what you are looking for. I've been using them for years and have never been disappointed. Good Luck.

 

[Jdeagro]

Re: Hydrofoils on a 1974 70hp on 17' aluminum

Do a search on this site for Smart Tabs.