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DIY Multi-hull plans out there?


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#1 rb608

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Posted 15 November 2008 - 03:37 PM

Heady with success in building a couple of really nice stitch & glue CLC kayaks, and being boatless with more time than money, I've been considering a multihull project. I've done some searching, but the first design I liked seemed to be a dead end (no response from the vendor).

What I'm looking for is a plywood design, 24'-27', folding trimaran. Who's offering plans these days for such a boat? I gotta keep it small for budget considerations, and I'm a decent woodworker - no FG please.

#2 MartinRF

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Posted 15 November 2008 - 04:31 PM

Heady with success in building a couple of really nice stitch & glue CLC kayaks, and being boatless with more time than money, I've been considering a multihull project. I've done some searching, but the first design I liked seemed to be a dead end (no response from the vendor).

What I'm looking for is a plywood design, 24'-27', folding trimaran. Who's offering plans these days for such a boat? I gotta keep it small for budget considerations, and I'm a decent woodworker - no FG please.

I have collected a few names (and links) here:
http://hem.bredband....6/deslinks.html

There are many, many more.

Not plywood nor folding tri but still a project of approximately that size and complexity:
http://hem.bredband....Boat/build.html

/Martin

#3 vmg

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Posted 15 November 2008 - 05:28 PM

Heady with success in building a couple of really nice stitch & glue CLC kayaks, and being boatless with more time than money, I've been considering a multihull project. I've done some searching, but the first design I liked seemed to be a dead end (no response from the vendor).

What I'm looking for is a plywood design, 24'-27', folding trimaran. Who's offering plans these days for such a boat? I gotta keep it small for budget considerations, and I'm a decent woodworker - no FG please.



You at least have to take a look at the F22 and F82 on the Farrier marine website. I am a carpenter by trade, but would not dream of using trees when thermoform foam is so nice to do!

#4 Lummux the Great

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Posted 15 November 2008 - 06:03 PM

Heady with success in building a couple of really nice stitch & glue CLC kayaks, and being boatless with more time than money, I've been considering a multihull project. I've done some searching, but the first design I liked seemed to be a dead end (no response from the vendor).

What I'm looking for is a plywood design, 24'-27', folding trimaran. Who's offering plans these days for such a boat? I gotta keep it small for budget considerations, and I'm a decent woodworker - no FG please.



It is Kendrick you seek.

scarab multihulls

#5 scooby_simon

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Posted 15 November 2008 - 06:25 PM

If you were interested in a beach cat; contact PhillBrander and build a Blade!

#6 Oxygen Mask

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Posted 15 November 2008 - 07:17 PM

There are a lot out there really, various pedigrees, style, comfort, sailability, folding or not etc.
Newick, Shuttleworth, Kendrick, Hughes, Grainger, LeRouge, Woods, Ostlind, many more and of course Farrier.

But for easy and quick build, and fast and fun to sail, have a look at the L-7.
www.multimarine.com
http://home.earthlin...l7construction/

#7 cyclone

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Posted 15 November 2008 - 08:33 PM

New, not wood but probably easier to source materials, the Farrier F-22.
Older design, which I happen to be building over an eternity, a Constant
Camber Cyclone 23, John Marples designer. Hopefully an excellent day sailer.
Plan on using Hobie 18 rigging.
Can be found at http://www.searunner.com/
JT

#8 rb608

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Posted 15 November 2008 - 09:16 PM

I have collected a few names (and links) here:
http://hem.bredband....6/deslinks.html

There are many, many more.


Hmm. Some interesting stuff there, & I'm only halfway through. Methinks I may have to re-consider my plywood criteria.

#9 rb608

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Posted 15 November 2008 - 09:21 PM

But for easy and quick build, and fast and fun to sail, have a look at the L-7.
www.multimarine.com
http://home.earthlin...l7construction/

That looks very do-able, thanks.

#10 MartinRF

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Posted 15 November 2008 - 09:54 PM

But for easy and quick build, and fast and fun to sail, have a look at the L-7.
www.multimarine.com
http://home.earthlin...l7construction/

Nice documentation.

/Martin

#11 Carl M

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Posted 16 November 2008 - 02:28 PM

I have collected a few names (and links) here:
http://hem.bredband....6/deslinks.html

There are many, many more.


Hmm. Some interesting stuff there, & I'm only halfway through. Methinks I may have to re-consider my plywood criteria.



I ran across this wood tri {resortation project? } and thought it might be of interest.

The crossbeam to hull connections should be redesigned and updated construction methods used but it looks like a nice 24 ft criusing tri if that is the goal .

Looks like the fold up ply method was used for the amas .



http://cgi.ebay.com/...1QQcmdZViewItem

#12 Amati

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Posted 16 November 2008 - 05:34 PM

Doesn't CLC have a plywood proa kit in your length? May not be the multi you're looking for, but fun to look at.

#13 Amati

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Posted 16 November 2008 - 06:31 PM

http://www.clcboats....s/CLC-PROA.html

:wub:

#14 TC Design

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Posted 16 November 2008 - 08:14 PM

Designed for PVC foam too I'm afraid. But could be adapted to stressed ply in the floats and a ply main hull if you were interested.
http://www.tcdesign....z/bt_660_st.htm

#15 Oxygen Mask

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Posted 17 November 2008 - 12:41 AM

Designed for PVC foam too I'm afraid. But could be adapted to stressed ply in the floats and a ply main hull if you were interested.
http://www.tcdesign....z/bt_660_st.htm


Looks quite nice! Clean simple lines, I like the flush cockpit seats (no coamings) looks like an easy shape to build, yet a pleasant shape. I can't get excited about demountable instead of folding though.

I'm not much of a cat fan, but I like your 8.5m cat too. Looks sweet!

#16 rb608

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Posted 18 November 2008 - 05:33 PM

Doesn't CLC have a plywood proa kit in your length? May not be the multi you're looking for, but fun to look at.


Yeah, CLC has a few nice little boats with sailing rigs; but as much as I'm a big fan of CLC, those just aren't at a level I'm looking for. I'm still considering the John's Sharpie though.

(One of my projects is featured in the CLC brochure & on their website. Pretty cool.)

#17 Rapscallion

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Posted 19 November 2008 - 04:42 AM

I have stumbled across a couple of cool trinado projects...

#18 TC Design

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Posted 19 November 2008 - 03:27 PM

Designed for PVC foam too I'm afraid. But could be adapted to stressed ply in the floats and a ply main hull if you were interested.
http://www.tcdesign....z/bt_660_st.htm


Looks quite nice! Clean simple lines,


looks like it's pregnant...with a proa.

seriously, that flare out is ugly and gonna slap like a bitch.

s.


If you are of human dimensions, and actually want to sit below with something approaching a straight back, then that is how deep the chines have to be on 6.6m boat.
I firmly believe boats are to time consuming and expensive to be one dimensional racing craft. So being able to function below is a requirement, that compromises the boat somewhat.
Easy to make something racey but impracticable...
However I am updating the boat for another client at the moment, and changing those lines slightly, and the main hull bow. area

#19 oldsailor

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Posted 21 November 2008 - 10:06 PM

I can supply Buccaneer 24 trimaran plans.
Arguably the best all round 24" trimaran ever designed

#20 Mike-NA

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Posted 24 November 2008 - 06:09 AM

Heady with success in building a couple of really nice stitch & glue CLC kayaks, and being boatless with more time than money, I've been considering a multihull project. I've done some searching, but the first design I liked seemed to be a dead end (no response from the vendor).

What I'm looking for is a plywood design, 24'-27', folding trimaran. Who's offering plans these days for such a boat? I gotta keep it small for budget considerations, and I'm a decent woodworker - no FG please.

======================================================
Yourself and others like you, I recommend that you take a good look at 5 small wood boats that are worthy of the building effort.

The Buccaneer 24' is a clever demountable design.. needs updating a bit by lengthening the main hull to flatten the buttocks and lengthening the amas to come level with the man bow. All easily done and 'Old Sailor' has the plans. Photo of two on the www.smalltrimarans.com site

Discovery 20 by Chris White. Another demountable boat without cabin but a great cockpit for comfortable sailing. Strip cedar construction for a beautiful and nice-handling boat.

Trikara19 by Kurt Hughes. Somewhat like the Discovery in purpose, but probably cheaper to build. Like great from the front, pretty ugly (sorry Kurt) from the rear. Demountable with spars as beams. I think this boat uses Kurt's own build system of laminated thin ply.
Fast fun day sailor - not expensive to build

Constant Camber 23 is also a neat boat .. light and will perform decently. Requires you to premould ply or veneer together into a curved form. Not complicated.

The L7 is the newest of the pack ... little bigger but reflects faster, more modern design - although NONE of the above boats are slow. Somewhat more expensive to build though still nothing like an F22 or even close. Uses a pre-moulded bottom 'pan' in fibreglass that sells for about $4K I'm told. Rest is plywood.
My own W22 (coming later) will use a similar concept as I started it in the late 50's. I then called it a solepiece or 'the soul' of the boat ;-)

Hope this helps.
mike NA

#21 robertmackeralman

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Posted 05 December 2008 - 12:53 AM

I'd consider a Harryproa. An Elementarry might suit you or you might consider the Harryproa that Rapscallion is building. You could also look at the Jarcats if you want to use ply. The J7 moves pretty well but does take a bit of time to set up. Kendrics boats are very nice also.




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