New Posts New Posts RSS Feed: V3- Early sketches
  FAQ FAQ  Forum Search   Register Register  Login Login

V3- Early sketches

 Post Reply Post Reply Page  <1 34567>
Author
Guests View Drop Down
Guest Group
Guest Group
Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Topic: V3- Early sketches
    Posted: 05 Dec 14 at 8:42pm
Graeme, you will need lots more beam and angles to make it worth having a triple hulled formation other wise it will have massive whetted area. 

It will be hard to build something like that to any decent weight. I still think that if you are keen on the multihull style you have three real options outside traditional cats.

1. pickup a cheap Vortex - it gives you stable trapeezing or if you want to bast***dise it further get some aluminium and netting bench seats off a hobie and fit them either side. 

2. buy a weta!

3. build something like the 'tri fly' we have. I posted photos ages ago, but can't find them. Basically a buoyant thin central hull with racks coming off either side at big angles and small, shorter hulls on either side outboard of the racks. Very quick and the guys who built it call it a stabilised monohull.


Back to Top
Guests View Drop Down
Guest Group
Guest Group
Post Options Post Options   Quote Guests Quote  Post ReplyReply Direct Link To This Post Posted: 05 Dec 14 at 8:50pm
Here you go:-




Edited by SimonW99 - 05 Dec 14 at 8:50pm
Back to Top
iGRF View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 07 Mar 11
Location: Hythe
Online Status: Offline
Posts: 6499
Post Options Post Options   Quote iGRF Quote  Post ReplyReply Direct Link To This Post Posted: 05 Dec 14 at 9:08pm
I'm not building a multihull, it is a monohull with a big gap up the middle.

Got to stop thinking in conventional terms.
Back to Top
davidyacht View Drop Down
Really should get out more
Really should get out more


Joined: 29 Mar 05
Online Status: Offline
Posts: 1345
Post Options Post Options   Quote davidyacht Quote  Post ReplyReply Direct Link To This Post Posted: 05 Dec 14 at 11:24pm
Skip the inland, A class cat, tortured ply ....
Happily living in the past
Back to Top
Rupert View Drop Down
Really should get out more
Really should get out more


Joined: 11 Aug 04
Location: Whitefriars sc
Online Status: Offline
Posts: 8956
Post Options Post Options   Quote Rupert Quote  Post ReplyReply Direct Link To This Post Posted: 06 Dec 14 at 10:29am
Originally posted by iGRF

I'm not building a multihull, it is a monohull with a big gap up the middle.

Got to stop thinking in conventional terms.


Agreed. And the only way this will work is building it ultra light. Even the Minisail Sprite with a concave underside, built at 25 kg could be fun, and if you tweak it to your needs, then it could be epic. I'm sitll not sure about the forward part of the hull, though I can see what you are trying to avoid - cat like behaviour! Why not use preformed foam panels to get the shape rather than plywood? Lots on the Cherub website about it, I'm sure.
Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
Back to Top
iiitick View Drop Down
Far too distracted from work
Far too distracted from work


Joined: 04 Jun 14
Location: gb
Online Status: Offline
Posts: 478
Post Options Post Options   Quote iiitick Quote  Post ReplyReply Direct Link To This Post Posted: 06 Dec 14 at 11:21am
Yes....listen to Uncle Rupert. He of the CVRDA thingy. I spent the last thirty odd years of my working life messing with wood and I do not feel capable of  building any boat more complicated than a stitch and glue Mirror. I thought the way of building prototypes was by shaping a big lump of foam then laminating over it. Is that not how the Rooster Project X was built? It looked horrid  but who cared? Then there is the equipment, bandsaw, table saw, clamps, flat building area, heat, light, sticking plaster, hand tools, more sticking plaster.....I want to see if this idea works. I do not wish to see the next **** years of your marriage ruined by that "festering lump of expensive wood blocking my way to the washing machine".
Back to Top
Rupert View Drop Down
Really should get out more
Really should get out more


Joined: 11 Aug 04
Location: Whitefriars sc
Online Status: Offline
Posts: 8956
Post Options Post Options   Quote Rupert Quote  Post ReplyReply Direct Link To This Post Posted: 06 Dec 14 at 1:16pm
Given the small inside volume of the boat, a block of foam could well work to carve it from - good thinking iiiiiiiitick.


Firefly 2324, Puffin 229, Minisail 3446 Mirror 70686
Back to Top
Do Different View Drop Down
Really should get out more
Really should get out more


Joined: 26 Jan 12
Location: North
Online Status: Offline
Posts: 1312
Post Options Post Options   Quote Do Different Quote  Post ReplyReply Direct Link To This Post Posted: 06 Dec 14 at 2:11pm
Genius Itick.

Use a tubular alloy / carbon / old GRP Windsurfer mast sections to make a load bearing space frame.

If you use ply you'll have a heck of task to retro. change any shapes. With the foam core you could simply gnaw the skin off to add or remove as required.

As Itick says it'll look a mess but that's the point of prototypes, a work in progress.

Good luck.

 
Back to Top
JimC View Drop Down
Really should get out more
Really should get out more
Avatar

Joined: 17 May 04
Location: United Kingdom
Online Status: Offline
Posts: 6662
Post Options Post Options   Quote JimC Quote  Post ReplyReply Direct Link To This Post Posted: 06 Dec 14 at 2:53pm
Umm, not at all sure about the foam lump option... The Bethwaites mostly do their prototypes in cedar strip.
Back to Top
Do Different View Drop Down
Really should get out more
Really should get out more


Joined: 26 Jan 12
Location: North
Online Status: Offline
Posts: 1312
Post Options Post Options   Quote Do Different Quote  Post ReplyReply Direct Link To This Post Posted: 06 Dec 14 at 3:08pm
IGrf Acknowledges his lack of skill with wood and short attention span. 

There's the best way to do things and then there's the way that might actually get so far as the water for a given situation.   
Back to Top
 Post Reply Post Reply Page  <1 34567>

Forum Jump Forum Permissions View Drop Down

Bulletin Board Software by Web Wiz Forums® version 9.665y
Copyright ©2001-2010 Web Wiz
Change your personal settings, or read our privacy policy