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Re: Ultralight Sea Kayak Idea
By:David Dick
Date: 4/13/2001, 12:17 am
In Response To: Ultralight Sea Kayak Idea (David Blodgett)

: would do basically the same thing, but use kevlar roving/chordage as the
: ribs. I could simply cut small notches where the kevlar roving would lay
: on the stringers. soak the kevlar in resin, and make ribs that way. : I am starting a small model of one of my own designs, whne it's finished,
: I'll post some pics of it.

Paul is right; the ribs are compression members and subject to buckling, so slender ribs work against you. You want them to be thick, so you need something light like, oh, say, wood. I once had an idea to use epoxy soaked jute in the manner you suggest, but space it much closer together than the ribs the plan calls for.

One thing to beware of is the need for the stringers to be outside the ribs, or else they will push on the skin and slow the boat. The Kevlar is on the outside but is a flat, linear tow and doesn't show much.

I think my plan was to make a stitch and glue form with foam board, wrap it up with the saturated string, apply the stringers to the outside, and tear the form out in pieces. It got to sounding like more work than steamed ribs and Kevlar.

So how is the intreped buyer making out with the Yare?

Messages In This Thread

Ultralight Sea Kayak Idea
David Blodgett -- 4/12/2001, 5:15 pm
Re: Quite Light Sea Kayak *Pic*
Mike Hanks -- 4/13/2001, 12:46 am
Re: Quite Light Sea Kayak
Geo. Cushing -- 4/13/2001, 2:48 pm
Re: "urethane" and "varathane" *Pic*
Mike Hanks -- 4/13/2001, 8:55 pm
Re: "urethane" and "varathane"
Thumbs -- 4/13/2001, 10:25 pm
Re: "urethane" and "varathane"
Arthur -- 4/13/2001, 11:25 pm
Re: "urethane" and "varathane"
Geo. Cushing -- 4/17/2001, 3:06 pm
Re: "urethane" and "varathane"
Arthur -- 4/18/2001, 7:44 pm
Re: Ultralight Sea Kayak Idea
David Dick -- 4/13/2001, 12:17 am
Re: Ultralight Sea Kayak Idea
David Blodgett -- 4/13/2001, 12:43 am
Re: Ultralight Sea Kayak Idea
Thumbs -- 4/12/2001, 11:16 pm
Re: Ultralight Sea Kayak Idea
Peter Harris -- 4/12/2001, 11:02 pm
Re: Ultralight Sea Kayak Idea
Bill Price -- 4/12/2001, 8:17 pm
Re: Project X *Pic*
Shawn Baker -- 4/12/2001, 7:38 pm
Re: Ultralight Sea Kayak Idea
Paul G. Jacobson -- 4/12/2001, 6:10 pm
Re: Ultralight Sea Kayak Idea
David Blodgett -- 4/12/2001, 9:48 pm