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  #1  
Old 03-10-2017, 02:58 AM
Manfred.pech Manfred.pech is online now
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Question

Important experiment or wastage of resources?

http://www.instructables.com/id/DIY-...oam-Catamaran/
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Old 03-10-2017, 05:34 AM
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daiquiri daiquiri is offline
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I see a lots of small styrofoam grains which will fall off that thing, end up in the sea and accumulate in the tissues of marine life forms. And sooner or later probably in our tissues too.
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Old 03-10-2017, 05:52 AM
UpOnStands UpOnStands is offline
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waste in many ways, and as noted, a threat to the environment.
recycling windsurfer boards appeals more
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Old 03-10-2017, 06:33 AM
Goliat Goliat is offline
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Originally Posted by daiquiri View Post
I see a lots of small styrofoam grains which will fall off that thing, end up in the sea and accumulate in the tissues of marine life forms. And sooner or later probably in our tissues too.
Pink styrodur foam dont have any grains. It's fully foamed material.
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Old 03-10-2017, 06:39 AM
Goliat Goliat is offline
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Originally Posted by Manfred.pech View Post
Important experiment or wastage of resources?

http://www.instructables.com/id/DIY-...oam-Catamaran/
As long as it sails and it is fun, it,s not a wastage. It's cheap, and with additional layer of epoxy on the hulls it will last for years.
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Old 03-10-2017, 07:48 AM
upchurchmr upchurchmr is offline
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Avoid anything from Instructables as a general rule.

This is not equivilent to a commercial built catamaran, and that catamaran would not be $2000.

Obviously not owned by a competent sailor, given the body position and the sail position (jib).
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Old 03-10-2017, 08:04 AM
redreuben redreuben is offline
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No

As Neil Young would say.
"It's a piece of crap"
Imho
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  #8  
Old 03-11-2017, 06:40 AM
Manfred.pech Manfred.pech is online now
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Thanks for the interesting statements. If someone is interested here is the homepage of the creator Josh: http://joshbuilds.com/



I remember a report of MULTIHULL INTERNATIONAL from a competition in GB where a boat had to be built in hours and then "raced" against the other competitors. Mono and multihulls were allowed, ply and Sikkaflex, nails and pine and tarp for the sails. It was reported that the spectators and the competitors had a lot of fun. Boats broke apart and /or filled with water and only a few of them arrived unaffected their destination. Some had to be rescued or to swim ashore.

The main point was the design. The boat had to be safe enough, fast and especially easy and fast to be built. I think, the design of Josh would have been between the first finishers.
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Old 03-12-2017, 04:34 AM
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guzzis3 guzzis3 is offline
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There are a few similar competitions like hat about. The successful builders usually knock something up in ply. If your design is thought out carefully you can do away with the steps that require yo to wait around, slow setting glue, fiberglass paint. The boat doesn't have to last years...

I think Mr Woods has accounts on his website of one such competition where he and some friends built (I think) a duo in a weekend or something...

I'm all for people experimenting and building their own boat if they wish, but if the objective is to sail then there are so many useable beach cats around for almost no money, at least around here...

UpOnStands: That's interesting. Here it presents 2 problems.

For a sailing cat I'd probably put the boards on their sides

and there are no cheap windsurfers around here anymore. I think everyone has re purposed them as stand up paddle boards, which seems to be the latest trend.

I've got a set of plans for the stevenson projects tiny cat, there is the arafura cadet, plans are still available, and of course Mr Woods has beach cat plans. For what I can get a 14' cat for I would not build any of them...

2c...
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Old 03-12-2017, 06:12 AM
Manfred.pech Manfred.pech is online now
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Thank you for the link. I´m so fascinated by the Stevenson projects that I`ve ordered plans for the little Hydro Cat http://www.stevproj.com/HydCatPg1.html . There is a sailing version and I hope to get the plans which is not so easy as the way to germany is long and the customs station is absolutely boring - german "Gründlichkeit" (~correctness).
I`m curious how they solve the hydrodynamics on the floats to get an even ride.

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Old 03-12-2017, 07:43 AM
UpOnStands UpOnStands is offline
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Originally Posted by guzzis3 View Post

UpOnStands: That's interesting. Here it presents 2 problems.
For a sailing cat I'd probably put the boards on their sides
and there are no cheap windsurfers around here anymore. I think everyone has re purposed them as stand up paddle boards, which seems to be the latest trend.
one point is that the boards have all the mounting points for fins and different fin types are available to act as keels. pivot the seat around the mast rather than using a trapeze? On edge, too asymmetrical hence too much drag?
Standup boards? another fad/trend -- those boards will become available again. Just a matter of finding a matching pair.
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Old 03-12-2017, 08:03 AM
UpOnStands UpOnStands is offline
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Originally Posted by Manfred.pech View Post
I remember a report of MULTIHULL INTERNATIONAL from a competition in GB where a boat had to be built in hours and then "raced" against the other competitors.
The main point was the design. The boat had to be safe enough, fast and especially easy and fast to be built. I think, the design of Josh would have been between the first finishers.
Did any one enter a proa? thin but deep lee hull to mount/support the mast with the larger shallow windward hull supporting the crew.
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Old 03-12-2017, 10:56 AM
Manfred.pech Manfred.pech is online now
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Originally Posted by UpOnStands View Post
Did any one enter a proa? thin but deep lee hull to mount/support the mast with the larger shallow windward hull supporting the crew.
I do not not remember a proa ... it was about 3o years ago .. and proas were rare or seldom.
If the surfboards are seldom a proa would be nice: or a trimaran: split and mount. Both pics from Ian Smith Australia to be found under Windrigger AYRS. http://fionamsinclair.co.uk/yachts/smith/page24.htm
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Old 03-12-2017, 11:47 PM
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guzzis3 guzzis3 is offline
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So much fun to be had with little boats. Even if it goes wrong it does not matter.

Thank you for the photos, very interesting. I did not know that stevenson projects was still going. They always had weird and whacky things in their plans list...
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