skegs on a step bottom boat ?

baronmarine

Charter Member
was there ever been any tought on skegs on a step bottom boat ? like a ski boat would use for tracking. who it work ? may seem like a dumb question. but i was just wondering.

todd
 
I guess the question would be, where do the skegs belong? ski boats are v-drives and usually the pole is located in the center of the boat.

Seems logical though...
 
unlimited hydro's have em and they use them for turning as well!

cigs have the reverse chine on the stern, maybe that has something to do with the spin/roll?
 
It has been suggested that a reverse chine would stop a lot of turning accidents. I can't remember by who. T2x?
 
Skegs are for turning. If you guys want to stop the spin outs start by lowering your drives back in the water.

Isn't this backwards on a stepped hull, by tucking the drives you would put more of the bow in the water, making it grab better than the drives. And before everyone starts commenting this is for safe turning speeds, not WOT.
 
Skegs are for turning. If you guys want to stop the spin outs start by lowering your drives back in the water.

I hear you

It has been suggested that a reverse chine would stop a lot of turning accidents. I can't remember by who. T2x?

It helps . Phantoms have them.

If you overpower a boat and have no experience you will find trouble. It is one thing to be in a race and push the limits, but to be playing hard and not know your limits is stupid.
 
Isn't this backwards on a stepped hull, by tucking the drives you would put more of the bow in the water, making it grab better than the drives. And before everyone starts commenting this is for safe turning speeds, not WOT.


I think he means lowering the X dimension and bringing the drive down further in relation to the hull. A byproduct of raising the X for more speed is you lose the sidewards stability (keel effect) of the drive since there is less in the water.
 
Someone had to of tested this on a race boat. Unless it's illegal? Anything that would make a race boat run faster, and is legal, must have been tested. Right?


On RC boats, the turn fin on a deep v is set so that at top speed it does not touch the water. When turning, as the hull lays on its side to turn, the turn fin is in the water. Would the same principal apply? I would have to say yes.

We also use only one fin on the inside, (turn side), of the hull.

For a non-race boat they'd have to be on both sides. Same with RC.
 

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Some trim tabs have rails on them designed to help.

I personally think it is just case of learning the boat. You can not make it turn harder then it wants too. So you add a ski fin so it doesn't slide, it just throws you out instead when you turn it too hard. Experience and an understanding is what is needed not a turning aid. IMO
 
Sunsation added rails on the 280 K-planes on their stepped 32 S/SS/SSR.

Yep, and when they started drilling holes in them, it looks like a pair of Yamaha PWC going down the lake with the two fountains shooting up.

I don't have a picture right now, but I'll get one... if you look at the bottom of the DDC Active Thunder hull, the portion of the pad behind the step is "sculpted" with longitudinal strakes which keep the hull in check/tracking correctly when you have the boat trimmed correctly; that is with the transom in the water; aka trimmed neutral or out in a turn.
 
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