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  #46  
Old 07-02-2012, 05:32 PM
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Doug Lord Doug Lord is offline
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Quote:
Originally Posted by Corley View Post
Just as a reference the Nacra F20C is $32,000 to purchase I'm not sure whether that includes a trailer and/or launching dolly. That is a full carbon platform of course with no glass parts so the 30k estimate for a 20' high performance beach trimaran is not that far off if you assume 10% cost increase due to extra hull as Doug suggests. Generally I agree with Doug's numbers but think that a trailer or at least a launching dolly should be included in the cost because you wont drag an expensive boat like this across the sand Id envisage a dolly adding say $800 to the cost and a trailer perhaps $3000?

As to Kraken 25 vs Warren 23(25) it's hard to say they arrive at a similar point through very different design approaches. The Kraken 25 focusses on lightweight with small low buoyancy floats, crew and skipper on trapeze and a relatively large low aspect rig. The Kraken25 is certainly the more physically demanding of the two boats to sail in that configuration. I think the Warren 23 would probably win out due to it's superior hull shapes, large high aspect rig and greater beam for more righting moment but it would be a close run race. I would have built the Warren 23 if I was starting with a clean sheet and no sentimental reasons, cant beat progress.
--------------------
I already have a trailer and it cost $600* in 2001 or 2. But during this project(now converted to a smaller boat from the tri) it occured to me that you can get flatbead trailers here fairly inexpensively. And I have a lot of carbon and glass tubes here so after seeing "dollies" costing more than my trailer did it occurred to me that I could get some wheels and build my own dolly for around $300US. I want to have my trailer converted so that it has a flat bed and a fold up "gate" at the back and some sort of "risers" so the dolly with the boat on it doesn't have to take road loads. That will be the almost perfect solution for the new little boat as it would be for the tri. Anybody handy with epoxy/carbon/glass can build a small dolly for far less than they are being sold for now.
*Now that trailer would be around $1100US(guess) and would handle a 300lb boat easily(600lb capacity).
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  #47  
Old 07-03-2012, 12:10 AM
Brian2009 Brian2009 is offline
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http://sailingcatamarans.com/Strike%2018.htm
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  #48  
Old 07-03-2012, 08:08 AM
mydauphin mydauphin is offline
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You can buy small Trailers cheap at northern tools or harbour freight, then modify them. However they are cheap steel and not galvanized so proper washing and painting wouldn't keep rust away.
This time of year if you can take the heat and humidity , the mosquitoes will get you. I stay in the AC and blog.
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  #49  
Old 07-05-2012, 12:55 PM
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Richard Woods Richard Woods is offline
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Brian2009

Thank you for posting the link to my Strike 18. However I think my Strike 15 is nearer the under 20ft racing trimaran Doug is interested in.

You can see more here

http://sailingcatamarans.com/Strike%2015.htm

Being built now, in 4mm ply and epoxy, the prototype should be sailing later this year.

So far the plywood, timber, epoxy, glass and screws for the main hull have cost me under CAN500 (so say USD500). I probably have enough epoxy and glass to build the outriggers as well. Materials in the USA are much cheaper than in Canada.

The main hull before decking, but with all bulkheads and daggerboard case fitted, should weigh 30lbs and have taken under 30 hours to build. I'll know for sure next week

Richard Woods of Woods Designs

www.sailingcatamarans.com
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  #50  
Old 10-01-2012, 07:11 PM
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Doug Lord Doug Lord is offline
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Quote:
Originally Posted by Doug Lord View Post
Note thread title should have been : "Small tris 20' and under" but I didn't catch it soon enough- it's what I originally had in mind.....
==========================

There seem to be more and more. So I'll try to put them in this thread so we'll all have a place to look for the latest tri designs-I'll add everyone that is actually sailing that I can find. But it seems like more and more of the same thing: a trimaran that looks nice but simply doesn't have the power possible with a trimaran platform. And oh yeah: lets see A class cats, C class cats, Nacra 20, Nacra 17 Olympic and more all make use of lifting foils but-not one single trimaran under 20'!! Why is that??
--------
Here is a nice looking new tri from San Diego-just discovered on the "multihulls" forum at SA:
•Length of hull: 5800mm (19')
•Beam unfold: 4455mm (14' 6")
•Beam fold: 1800mm (6' 11")
•Mast length: 9115mm (29' 10")
•Weight: Under 300kg (650 lb)


http://www.searail19.com/p/images.html
===============
Here is are a couple of beautiful pictures of this trimaran-be sure to click on it, expand it and click once again:
Attached Thumbnails
Small trimarans under 20'-trimaran-searail-19-downwind-bow-shot.jpg  Small trimarans under 20'-trimaran-searail-19-upwind-stbd-aft.jpg  
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  #51  
Old 10-02-2012, 01:56 AM
redreuben redreuben is offline
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Transporting Multihulls

Miss Cindy takes car topping to new levels !
Attached Thumbnails
Small trimarans under 20'-theboys.jpg  Small trimarans under 20'-atferry.jpg  Small trimarans under 20'-truckerseye1.jpg  

Small trimarans under 20'-onroof.jpg  
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  #52  
Old 10-02-2012, 01:57 AM
redreuben redreuben is offline
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OOps wrong thread !
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  #53  
Old 10-02-2012, 12:19 PM
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SpiritWolf15x SpiritWolf15x is offline
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Originally Posted by redreuben View Post
Miss Cindy takes car topping to new levels !

That is quite possibly the most awesome thing I've ever seen!
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  #54  
Old 10-04-2012, 10:07 PM
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SpiritWolf15x SpiritWolf15x is offline
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If it hasn't already been posted.

http://multihulldesigns.com/daysailer.html

Kurt Hughes has a number of trimaran designs that are at or smaller 20'.
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  #55  
Old 11-08-2012, 08:25 PM
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Doug Lord Doug Lord is offline
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Sea Rail 19

Quote:
Originally Posted by Doug Lord View Post
===============
Here is are a couple of beautiful pictures of this trimaran-be sure to click on it, expand it and click once again:
============
Here is a video of the Sea Rail 19 under sail.( see post #50 above) Looks to me like it needs more beam and/or foils.
Sea Rail 19 set-up video: http://www.youtube.com/watch?v=AfaWj...layer_embedded

Sailing video: http://www.youtube.com/watch?v=ZaFVx...outu.behttp://
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  #56  
Old 11-08-2012, 08:46 PM
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Doug Lord Doug Lord is offline
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Weta

Just for the record: The Weta. Heres a thread with Weta specs and a turbo proposal: Weta: Normal and Turbo Proposal
Attached Thumbnails
Small trimarans under 20'-weta44-4-people.jpg  Small trimarans under 20'-weta-planing-2-boats.jpg  
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Last edited by Doug Lord : 11-10-2012 at 06:13 PM.
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  #57  
Old 02-06-2013, 02:09 PM
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Doug Lord Doug Lord is offline
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Ninja

Heres a great little trimaran:
bigger-click on url and then youtube "expand"
http://www.youtube.com/watch?v=d94DD...layer_embedded
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  #58  
Old 02-24-2013, 07:11 AM
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Doug Lord Doug Lord is offline
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Here is a great article on some of the many tri's available 20' and under. Scroll down for comparison chart. http://smalltridesign.com/Trimaran-A...s/review2.html
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  #59  
Old 02-24-2013, 07:30 AM
Ilan Voyager Ilan Voyager is offline
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Quote:
Originally Posted by Doug Lord View Post
Here is a great article on some of the many tri's available 20' and under. Scroll down for comparison chart. http://smalltridesign.com/Trimaran-A...s/review2.html
Doug, there are all obsolete day sailers, with no perfs in front of a god cat, and expensive to build. No interest to invest a buck in such boats. The above videos show all the same thing; a cruel lack of volume of the amas (and "potatoes bag sails" for some).
Good amas on a tri are about 220% of the DISPLACEMENT, with rudders on the amas, that means boat and crew on a small tri. So I leave you imagine the size of the amas...as big as the central hull. In France we learned the lesson in the years 85-90 with the F40, and after no tri was designed as the old ones. All oceanic race tris can fly on one hull, even 100 feet long, that's an absolute requisite. Look also at the hulls now: very simple, high prismatic coeff, almost no rocker.
All these boats are 20 years obsolete, and far too expensive to build. I do not see any advantage compared to a 18 feet cat with comfortable wings...
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  #60  
Old 02-24-2013, 07:41 AM
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Doug Lord Doug Lord is offline
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Originally Posted by Ilan Voyager View Post
Doug, there are all obsolete simple day sailers, with no perfs in front of a god cat, and expensive to build. No interest to invest a buck in such boats.
====================
The statistics have value to anyone designing a small tri. I'd hardly call the Weta an obsolete simple daysailer since it is one of the most successful production trimarans under 20' ever.
But I agree that if I build another small tri it will be a beachcat killer. Small tri's have a bad rap for being slower than equivalent length beachcats-it doesn't have to be so.
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