Offshoreonly.com

Offshoreonly.com (https://www.offshoreonly.com/forums/)
-   General Boating Discussion (https://www.offshoreonly.com/forums/general-boating-discussion-51/)
-   -   Steps to straight hull, anyone done ? (https://www.offshoreonly.com/forums/general-boating-discussion/257135-steps-straight-hull-anyone-done.html)

shootitup 07-03-2011 09:59 AM

Steps to straight hull, anyone done ?
 
Have plan make steps to stinger 312 straight v-hull.

Has anyone done steps to any straight hull boat in afterwards ?

fastdonzi 07-03-2011 12:23 PM

The Great Lakes Caster Fountain was a Non Stepped boat and was converted to a single step. They won a championship in Key West with it. It came out really well. It is a huge task but can be done.

jeff32 07-03-2011 12:23 PM

artificial steps with painting on the hull side. otherwise, money better spent by selling your boat and buy one with built in steps!

shootitup 07-03-2011 01:28 PM


Originally Posted by fastdonzi (Post 3444050)
The Great Lakes Caster Fountain was a Non Stepped boat and was converted to a single step. They won a championship in Key West with it. It came out really well. It is a huge task but can be done.

Wow, good results. I suppose that there are not any pics of that converting job.

shootitup 07-03-2011 01:46 PM


Originally Posted by jeff32 (Post 3444051)
artificial steps with painting on the hull side. otherwise, money better spent by selling your boat and buy one with built in steps!

Could be wrong but what i know all boats with steps on hull are
much newer. If it so the boat change could cost more than 20000$.
I have done many glasfibre jobs.. so no way i can save money with changing the boat.

It would be nice to know how many mph can reach more with steps compare without steps in same boat+same engine/drives.

BDiggity 07-03-2011 02:40 PM

i forsee another great ebay ad in 5 years for a boat that was modified to the point it performs worse than when stock.

Too Stroked 07-03-2011 02:43 PM

Before you start this one, take a look at an older (non-stepped) Fountain or other V-bottom. Now find a stepped version of that same model. (And remember, Fountain went through at least 3 major generations of steps.) I think you're going to quickly find that the stepped hull looks nothing like its non-stepped ancestor. It's not just adding a step. It's more like cutting the bottom out and starting all over again. And if you don't know exactly what you're doing, you will end up with one evil handling boat - with significantly reduced resale value.

dockrocker 07-03-2011 03:38 PM

Nah, it's easy. Just re-engineer the entire stringer system, bottom design in terms of strake location, length, height, etc, bottom angle before and after the step - oh, you might want to determine whether you need one step, two, or more.

Then it's just little stuff like working out the center of gravity, balance, and maybe rearranging the interior due to work done moving the stringers. Don't forget about making sure the bilges still drain properly and that there is no way for water to collect in the hull.

Piece of cake, a little JB weld and some duct tape and you're good. ;)

GEORGE YURICK 07-03-2011 03:41 PM

i know the crazy folks at Activator grafted a 29 activator bottom into a 30 superboat.....it was a huge undertaking that probably cost as much as building a new boat but its definetly a conversation piece.....

Comanche3Six 07-03-2011 03:56 PM

The wings and tail are going on as we speak.......up.....up....and away! LOL!

scarabman 07-03-2011 05:40 PM

bad info

PhantomChaos 07-03-2011 06:02 PM


Originally Posted by BDiggity (Post 3444089)
i forsee another great ebay ad in 5 years for a boat that was modified to the point it performs worse than when stock.

LOL!!!! :drink::drink::drink::drink::drink:

Riley0114 07-03-2011 08:12 PM

To answer the question of how steps affect performance.. I have heard some improve up to 10 mph and increased fuel efficiency.

shootitup 07-04-2011 12:50 AM


Originally Posted by Riley0114 (Post 3444167)
To answer the question of how steps affect performance.. I have heard some improve up to 10 mph and increased fuel efficiency.

10mph is a lot. How many horsepower u need more to get that 10mph 150+...

There are some fact's if someone are interested:
http://www.leisureboating.co.za/technical_articles/
Understanding design & performance of Stepped Hulls

project is huge, what i really want it to see if there are someone
who has done it to own boat and has project pics etc.

Nigel Hook's site dosnt include much.

MikeyFIN 07-04-2011 03:08 AM


Originally Posted by shootitup (Post 3444242)
Nigel Hook's site dosnt include much.

I Believe you should contact Team Scarab aka Larry Smith as I would think he did the job ?

Mange 07-04-2011 05:47 AM

5 Attachment(s)
I may be out on deep water, but try lock at an single step 35 Fountain. Would say A 312 Stinger vs. 35 Fountain comes from the same hull from start.... Excalibur 31/32. (A JC Simon design).

I had a 1989 312 Stinger, sold 2006.

But I could be wrong....

Mange

My prev. 35 Fountain

MikeyFIN 07-04-2011 05:52 AM

Fountain stepbottoms even the single ones If memory serves correct are FBdesigns.

MidOcean 07-04-2011 08:38 AM


Originally Posted by MikeyFIN (Post 3444260)
Fountain stepbottoms even the single ones If memory serves correct are FBdesigns.

Some FB... Some Peters... Single step cruisers were Harry Schoal.

shootitup 07-05-2011 05:09 AM


Originally Posted by Mange (Post 3444258)
I may be out on deep water, but try lock at an single step 35 Fountain. Would say A 312 Stinger vs. 35 Fountain comes from the same hull from start.... Excalibur 31/32. (A JC Simon design).

I had a 1989 312 Stinger, sold 2006.

But I could be wrong....

Mange

My prev. 35 Fountain


Thanks for those pics Mange.

I havent yet find any project pics, also send the mail to Larry Smith.

Mange 07-05-2011 06:33 AM


Originally Posted by CanDo (Post 3444826)
I don't know why everyone thinks Jean Claude Simon designed hulls. He didn't.


And who did then? From what I have learn the 312 Stinger coming from the 31/32 Excalibur.

But please straight this out :)


Mange

MikeyFIN 07-05-2011 06:38 AM


Originally Posted by MidOcean (Post 3444310)
Some FB... Some Peters... Single step cruisers were Harry Schoal.

Thanks.

MikeyFIN 07-05-2011 06:39 AM


Originally Posted by Mange (Post 3444841)
And who did then? From what I have learn the 312 Stinger coming from the 31/32 Excalibur.

But please straight this out :)


Mange

Jean Claude Simo designed decks and such,,, ask Charlie McCarthy..he should know firsthand.

VetteLT193 07-05-2011 07:50 AM

couldn't you just add thickness to the front of the boat instead of cutting into the back? If you made the whole front half of the boat say, an inch thicker in some fashion you would have a step without having to cut into or move anything.

It would be a simple step bottom though. Mine looks like a frikkin space ship and this picture doesn't do it justice. From a 3 dimensional sense, it's complicated as hell.

https://lh4.googleusercontent.com/-F...0/DSC05179.JPG

Rookie 07-05-2011 08:07 AM

1 Attachment(s)

Originally Posted by fastdonzi (Post 3444050)
The Great Lakes Caster Fountain was a Non Stepped boat and was converted to a single step. They won a championship in Key West with it. It came out really well. It is a huge task but can be done.

Dave Goodman at Tiger Fiberglass and Marine I believe did the bottom. You will be money ahead if you just buy a stepped boat.

Sean 07-05-2011 10:57 AM

there was a guy who put a step in a 41 apache... :party-smiley-004:

Steve 1 07-05-2011 11:33 AM


Originally Posted by MikeyFIN (Post 3444847)
Jean Claude Simo designed decks and such,,, ask Charlie McCarthy..he should know firsthand.

As I remember ,It came from the 29 Cary originally built by the Old master Schoel,which had the aft chine flared (horribly) somewhere down the line,there was a raceboat Speedy Doris, The 32 Jaguar open fisherman and the Cobra 32 came from it.

jmeng 07-05-2011 11:59 AM


Originally Posted by shootitup (Post 3444075)
Could be wrong but what i know all boats with steps on hull are
much newer. If it so the boat change could cost more than 20000$.
I have done many glasfibre jobs.. so no way i can save money with changing the boat.

It would be nice to know how many mph can reach more with steps compare without steps in same boat+same engine/drives.

That doesn't take resell into account. If you modify it you'll have to give it away. Newer boat will hold its value better.

seafordguy 07-05-2011 12:13 PM


Originally Posted by VetteLT193 (Post 3444899)
couldn't you just add thickness to the front of the boat instead of cutting into the back? If you made the whole front half of the boat say, an inch thicker in some fashion you would have a step without having to cut into or move anything.

Yeah - but wouldn't that add a TON of weight to the front of the boat and totally F-up the weight distribution?

shootitup 07-05-2011 12:32 PM


Originally Posted by VetteLT193 (Post 3444899)
couldn't you just add thickness to the front of the boat instead of cutting into the back? If you made the whole front half of the boat say, an inch thicker in some fashion you would have a step without having to cut into or move anything.

It would be a simple step bottom though. Mine looks like a frikkin space ship and this picture doesn't do it justice. From a 3 dimensional sense, it's complicated as hell.

https://lh4.googleusercontent.com/-F...0/DSC05179.JPG

If I do it that is exactly how i think to do it.
No way to cut out the old hull.

Only one step is possible i think.
Example take molds for both side of front hull.
Make/laminated new hull copy's for both sides and attached to the original hull.

Boat orginal hull stand like it was but in front there
are new layer structure. So boat hull are after that deeper in front but same level in back. Drives holds
original positions.

Front layer gravitate to the back approx 2 inches to the step point (where back side old hull starts).
There are a changes when compare to the old hull angle. That could be bad thing.
however when drive higher speed there are not a much front hull in the water.

VetteLT193 07-05-2011 12:49 PM

have you thought about adding a V pad instead? probably add just as much speed with a whole lot less hassle.

shootitup 07-05-2011 01:20 PM


Originally Posted by VetteLT193 (Post 3445173)
have you thought about adding a V pad instead? probably add just as much speed with a whole lot less hassle.

More detailed information for those pad installation.

Pics, before / after results etc..

endeavor1 07-05-2011 01:41 PM

paging Triple Digits, Paging Triple Digits you assistance is needed in forum 4......:lolhit: :party-smiley-004:

shootitup 07-05-2011 02:10 PM


Originally Posted by endeavor1 (Post 3445219)
paging Triple Digits, Paging Triple Digits you assistance is needed in forum 4......:lolhit: :party-smiley-004:


:point:

endeavor1 07-05-2011 04:43 PM


Originally Posted by shootitup (Post 3445244)
:point:

Man, your enthusiasm is great and for that I respect you. I think that as far as adding a step to this boat, it would ultimatley leave you dissapointed and upset.

Now, the pad bottom idea may be workable. ( Im not a glass guy or hydrodynamics engineer)

best of luck :coolcowboy:

Mange 07-05-2011 05:35 PM

shootitup,

Listen to the guys here. no offense but Chris Craft Stinger does not have the right layup scheme to built on. They don't even had the hull and deck glassed together.
If you MUST do this pic an old better built hull. Fountain, Cigarette, Powerplay etc.


just my 2....


Mange

flat rate 07-05-2011 06:34 PM


Originally Posted by Mange (Post 3445410)
shootitup,

Listen to the guys here. no offense but Chris Craft Stinger does not have the right layup scheme to built on. They don't even had the hull and deck glassed together.
If you MUST do this pic an old better built hull. Fountain, Cigarette, Powerplay etc.


just my 2....


Mange

That the truth!! I had a friend find out the hard way. He replaced his rubrail and when he put in the new screws they knocked off most of the wood blocks that the screws were supposed to bite into. Thats what holds the deck on. You could just push in the side and reach into the cabin!

RaggedEdge 07-05-2011 06:40 PM

If this deal was so simple the major manufacturers would not spend anywhere from a 1/4 to a 1/2 mil to redesign a hull.

Duct tape and Bondo are cheap, why spend real money on stupid chit like hull design? Enjoy what you have or step up and make the change, you will live longer and be more prosperous!


All times are GMT -5. The time now is 01:34 PM.


Copyright 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.