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Anyone running a hydrofoil on a stepped hull?

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Anyone running a hydrofoil on a stepped hull?

Old 03-30-2022, 06:46 PM
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Old 03-30-2022, 08:29 PM
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Originally Posted by SecondWind View Post
https://www.powerboatlistings.com/view/49850#

Here's a link to a 1990 Senza. Looks like an aggressive step for a 1990 25 foot powerboat. Maybe that's just a handling characteristic of this particular hull. I'd be careful throwing money at it without talking to someone who successfully fixed the issue on the same boat.
Yeah, itís fairly aggressiveÖ and you donít really ever see that. From what Iíve seen, a lot of big off shore boats have them but they have multiple gradual steps . You have to be careful driving, it can be dangerous. I always have to let off the throttle very easy and a 180 isnít all that hard to do.
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Old 03-30-2022, 08:35 PM
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Originally Posted by Prestigeworldwideee View Post
If you guys don’t have or have never had a stepped hull, I’d appreciate it if you just like the guys with stepped hulls talk.

Not mine but it’s the same hull, rides on a pocket of air… do you see why I’ve said that trim tabs won’t work besides the fact that I talked to owners that said they didn’t help

Its not a cat, it does not ride on a pocket of air, it rides on aerated water. Go to a poker run or a race and look at the boats, It doesnt mayter if it has one step or an outerlimits with 27 steps, they will all have tabs. That said your boat, steps or no steps is a single correct? singles are susceptible to torque which can cause them to lean. a twin has counter rotating props that counteract the lean. On a single slightly dragging a tab can help considerably. You need to take the time to learn the hydrodynamics of a stepped hull as there are some things about them that can get you in trouble really quick. You are correct in that they handle different than nonstepped hulls but you need to go a step further as to how.

Last edited by phragle; 03-31-2022 at 06:22 AM.
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Old 03-31-2022, 06:22 AM
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It is a very aggressive step, and it looks like a much steeper dead rise ahead of the step than behind it.
In my opinion (and I have a single step boat, so I am permitted to engage in this discussion), you should start with easy stuff like trying to move the center of mass farther back (even 50lbs worth of cooler from the front to the back will make a noticeable difference) does trimming it up lift the bow enough, and talk to Brett regarding props to achieve less stern lift. It sounds like you have two different things occurring, correct me if I am wrong: one being bow steer and the other listing over to one running surface? Trim tabs will help with the listing over, the bow steer looks like a design flaw in relation to your current set up (prop characteristics and balance)
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Old 03-31-2022, 11:20 AM
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Did posts get deleted off this thread? I remember commenting....I remember Rob (offshoredrillin) commenting. Neither are here. Didn't like what we had to say? What's this facebook now? lol
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Old 03-31-2022, 11:36 AM
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Originally Posted by TeamSaris View Post
Did posts get deleted off this thread? I remember commenting....I remember Rob (offshoredrillin) commenting. Neither are here. Didn't like what we had to say? What's this facebook now? lol
I see your post, you said gimble ring ? posts 14 & 16
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Old 03-31-2022, 11:45 AM
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Originally Posted by TeamSaris View Post
Did posts get deleted off this thread? I remember commenting....I remember Rob (offshoredrillin) commenting. Neither are here. Didn't like what we had to say? What's this facebook now? lol
This site is wonky today. Another thread I looked at was missing a lot also.
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Old 03-31-2022, 11:47 AM
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Originally Posted by Prestigeworldwideee View Post
If you guys donít have or have never had a stepped hull, Iíd appreciate it if you just let the guys with stepped hulls talk.

Not mine but itís the same hull, rides on a pocket of airÖ do you see why Iíve said that trim tabs wonít work besides the fact that I talked to owners that said they didnít help
Oh I see now.
Sure does ride on air.
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Old 03-31-2022, 12:03 PM
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Originally Posted by TeamSaris View Post
Did posts get deleted off this thread? I remember commenting....I remember Rob (offshoredrillin) commenting. Neither are here. Didn't like what we had to say? What's this facebook now? lol
yup, me too. One of mine seems to have disappeared, But then again, the op has another thread from last year on speed buying the boat and having speed issues. Discovered the trim button and found 7mph.

Maybe we posted there within last few days and thought we posted here ?

Last edited by SB; 03-31-2022 at 12:05 PM.
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Old 03-31-2022, 12:06 PM
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Originally Posted by SB View Post
Yep as usual, wasting everyone's time.
On here, he has no clue as to his own boat.
Then he gets hostile and we're the idiots.
FWIW, by chance when I was Googling Senza Spectre pics, I came across an Iboat thread by the same guy from 2018 fighting the same issue, here.

Apparently he has no clue or he needs someone that does to get the boat squared away if there is an issue at all.

( I have a stepped hull but it has more than one, so am I allowed to talk?)
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