Thanks: 0
Likes: 0
Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 3 of 3
-
15th August 2010, 11:02 AM #1Senior Member
- Join Date
- Mar 2010
- Location
- Queenstown New Zealand
- Posts
- 382
International Sailing Canoe Folder
Well, work on the Goat Island skiff has stalled out a bit. (-5 to 0 celsius in the garage, guests in the spare bedroom) , so I've been having a play with imaginary boats. Nearly as much fun, and lot's cheaper, at least while they remain imaginary.
The design I'm playing with is a sailing canoe on the IC10 dimensions, but capable of folding up and going in a bag. Big rig and some extra bracing plus leaning plank or similar for going fast close to home, smaller rig for cruising/putting it on the bus or aeroplane and the hull big enough to cruise with two plus gear on board. I've tried to get the underwater lines quite close to an IC10 sailing canoe.
Construction: Similar to my very narrow single paddling kayak: Folding Sea Kayak - a set on Flickr
Carbon tube stringers:
I can use the same carbon stringers, would consider upgrading the gunwale stringers to 25mmID/28mmOD tubes, but I'd probably build it with the ones I have, see if the concept works and/or needs heavier tubes on the gunwales
Crossframes:
Each of paulownia sandwiched betwen two laters of 6mm ply, should be very light and stiff.
Skin:
PVC as with the single kayak or possibly aircraft dacron with hypalon coating
Other Structure:
4 m Ply box structure between bulkheads 2 and 3 (counting from the front) to take torsional loads. 4mm ply floorboards between bulkheads 3-4-5, hinged down the keel line with timber cleats either end and along the outer sides so they can bolt into these crossframes and help with stiffness/torsional loads. Some bracing with webbing to help hold it together.
Rig:
Have drawn it with a 60 square foot lugsail, would be curious if anyone has ideas on ideal rig for IC10 performance on the cheap plus ability to reef right down for coastal cruising. (Or two separate rigs?)
All up weight under 20kg?
Idea is to get nearly all of it out of scraps from existing projects.
Thoughts from anyone?
(PDF can be zoomed in as far as you want for more detail)
Ian
-
15th August 2010 11:02 AM # ADSGoogle Adsense Advertisement
- Join Date
- Always
- Location
- Advertising world
- Posts
- Many
-
15th August 2010, 10:55 PM #2
Hi Ian,
It is the sort of project where you can learn a huge amount. Like you say the problem is torsional load between the rig, the centreboard and the hiking crew (more if she/he is on a leaning plank.
Best wishes
MIK
-
16th August 2010, 09:49 AM #3Senior Member
- Join Date
- Mar 2010
- Location
- Queenstown New Zealand
- Posts
- 382
Hi Mik, thanks for the comments.
Yes, I've been thinking about that. Current ideas are to manage the torsional loads between bulkheads 2 and 3 with a sort of hinged box structure that folds flat but becomes a rigid box when bolted into the bulkheads at either end. Might try the same idea with the floorboards between bulkheads 3 and 4 having sides that come up and bolt into those bulkheads to make a rigid U structure right back to frame 4. Also having an outrigger/leaning frame arrangement between the mast step position and frame 4 as I drew on the second page should help manage/convert torsional forces into sideways forces. Could try that with or without the inflatable outriggers I drew.
Another idea is to do the stern Baidarka style - more of a transom shape so the gunwale stringers don't have to pull in quite so much and there's lots of flare aft for planing/surfing.
http://www.squeedunk.com/_borders/ArcTern.GIF
Won't be building in a hurry - I'll concentrate all by building time on getting the GIS done for the summer, but I have quite a bit of computer/design time available that can't be converted into building time so might as well keep myself amused.
Ian
Similar Threads
-
Sailing rig for a plywood Quick Canoe?
By Clinton1 in forum Michael Storer Wooden Boat PlansReplies: 11Last Post: 13th August 2010, 11:32 PM -
Sailing outrigger canoe
By Rick_Tatum in forum BOAT DESIGNS / PLANSReplies: 5Last Post: 29th July 2010, 06:45 AM -
Nautilus sailing canoe
By woodeneye in forum MISC BOAT RELATED STUFFReplies: 1Last Post: 20th March 2010, 06:47 PM -
Eureka canoe sailing
By koala in forum Michael Storer Wooden Boat PlansReplies: 3Last Post: 18th July 2009, 12:30 AM -
BETH - Sailing Canoe
By Boatmik in forum Michael Storer Wooden Boat PlansReplies: 7Last Post: 30th August 2008, 08:54 PM