Hydrofoil for my boat

[bigjimg]

Thanks for the replies Gents.
I'm pretty sure the cav plate is clear of the water when the boat is on the plane. Stingray do a foil that clamps onto the cav plate with no need for holes. But the last thing I want is the thing coming off and smashing the prop. Has anyone tried one of these.

Bull
I have one of the Stingray clamp on style foils.It does what I needed it to do and that was to keep the bow down when pulling the little ones on the tube.It also helps greatly when punching into a short chop on the bay at low speeds.I can plane easily at 10 knots with a level attitude.
For me it was money well spent and took me 15 minutes to install of which 8 of those minutes were spent extracting it from the bloody packaging. Jim

[Jarrah Jack]

Ask the Lump what my boat was doing in a following sea with the Permatrim

cheers Murf

Probably depended on where he was sitting....

[bobbyb]

mate go the 4 blader, Will help lift the bum....

i just so happen i have a solas 17p for sale if interested.

[stue2]

Have a mate who tried it on his leg and he took it off soon after. He gets a better result with his Lenco trim tabs that he has since fitted. With a leg its pretty hard to lift the motor ? so the foil ends up too low and makes lots of drag at any speed above really slow.

As you know for a foil and motor to be at the right height you need to be able to slide your hand between the surface of the water and the bottom of the foil when at speed and the motors trimmed out for fast running. (I know you wont actually try this as your arms not long enough and there is a prop to think about but it gives you the idea)

Cheers
Chimo



PS As Dave said Permatrim would be the only one to try if you don't have or don't want tabs.

that right Chimo........

[bigjimg]

The Stingray XR111 is what i have fitted. Jim
stingray.bmp

[johncar]

have you not got tabs Bull?

if not why not?

I tried the Permatrim on my boat with some success but the negative characteristics seen me remove it quick smart. I believe the Permatrim to be the last resort if you are going to be out in rough weather and big seas at all. Ask the Lump what my boat was doing in a following sea with the Permatrim on haha you have to be spot on with trim of motor /leg or it turns into a rudder and puts you into a power turn when surfing down the face of a big swell if trimmed out never trimmed it in too far in a following sea but that would be scarier I recon.

and yes sit your deckies on the bow rail

cheers Murf

I also had some nasty little things happen in the HH 680 running downhill in shorther steep swells. Can't say for sure that the foil contributed but quite possible, Also thinking back to an old VMR boat with twin outboards and foils on both also did some scary things in the same sea so it may be a downside. Depends on your boat and type of use, the things I mentioned above happened mostly at night when a bit harder to pick the sea conditions.
I would look at it as a last resort and try all the things like weight distribution and tabs first even if just fixed ones.

[mal555]

I also had some nasty little things happen in the HH 680 running downhill in shorther steep swells. Can't say for sure that the foil contributed but quite possible, Also thinking back to an old VMR boat with twin outboards and foils on both also did some scary things in the same sea so it may be a downside. Depends on your boat and type of use, the things I mentioned above happened mostly at night when a bit harder to pick the sea conditions.
I would look at it as a last resort and try all the things like weight distribution and tabs first even if just fixed ones.

The Hydra-foil will always put your bow down slightly, which of course will greatly assist hole-shot, slow planing and sloppy head sea conditions, but you do need to be quick on the slight leg up-trim when turning down sea, along with constant tweeking adjustments and a steady cruise speed or they can create a bow-steer effect.

IMO the Stingray is the best foil choice for larger (seven to eight metre), sterndrive fitted boats, along with transom mounted trim tabs.
They also assist high, narrow, deep V boats like the seven metre Whittley Cruisemaster with lateral stability (laying over on a chine just after reaching planing speed), instead of constantly working the trim tabs to stay level.

[U4REEL]

I installed foils on my Kc 5.2 hoping to get on the plane quicker with the little 60's.. First outing was nice and calm and I thought they were mint, second outing was a bit sloppy and the boat turned into a wailing banshee that wanted to kill me! Now my outboards look like a pin cushion agree with the other guys absolute last resort