Search found 1340 matches

by nickcrowhurst
Fri Jan 08, 2021 4:17 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Shrike Sit-on-Top

Only a tiny HTML pic of this Shrike SOT from Brazil. I've asked for a better photo.

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by nickcrowhurst
Mon Jan 04, 2021 4:50 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

No, she's a fuselage frame kayak, and the frame in this photo will be covered with 6 ounce PVC polyester fabric. It's a very simple method of construction, and I built my first kayak like this in the kitchen when I was 12 years old, with no woodworking skills and with kids' toy tools. However, the m...
by nickcrowhurst
Mon Jan 04, 2021 1:49 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

I give that my seal of approval :) Meanwhile I've been having a whale of a time, wiring up the six frames:

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by nickcrowhurst
Sun Jan 03, 2021 9:56 am
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

All wired together

Perhaps the name "Skip" would show more respect for her than "Dumpster"?

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by nickcrowhurst
Mon Dec 28, 2020 9:48 am
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Shrike model at 16:1 scale

Chris JK PM'd me to ask if I could produce plans for a model Shrike with overall length of 900 mm. I've now done this, so PM me your email address if you are interested, and I will email you the PDF attachment. Neither of this forum's internal communications methods permit attachments. The total pri...
by nickcrowhurst
Sat Dec 26, 2020 6:39 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

Paul, yes, it is 45 degrees, confirmed on my spirit level that has an adjustable angle. I have to wear my ice-climbing crampons to work on the land.
by nickcrowhurst
Sat Dec 26, 2020 9:42 am
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

301 and counting

Courtesy of Chris Tipper of Selkie Kayaks, who reported a couple more last week, we've now listed over 300 builds that have been notified to us, out of over 8,000 downloaded copies of the plans. We've been busy planting trees, and only doing an occasional hour on Dumpster, the fuselage frame. She's ...
by nickcrowhurst
Thu Dec 24, 2020 8:41 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

Pedro, I agree. A computer can design a bad kayak quickly, and that's about it.
by nickcrowhurst
Thu Dec 24, 2020 6:47 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

David, I built a wooden prototype, took hundreds of measurement that I then transferred to CAD via Excel. I didn't use a computer in the design process. The CAD is just a means of giving the plans to the world.
Nick
by nickcrowhurst
Thu Dec 24, 2020 2:41 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Creating the frames

Sorry my question was not clear. What I am trying to understand is how you will derive the shape of each frame itself David, I didn't see this post before now. Probably because you made two posts about the same time. The answer is that some of the frames and temporary forms are the ones from the Sh...
by nickcrowhurst
Thu Dec 24, 2020 12:24 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

In my case, the cheapest clamps are the ones I've had since 1973. A neighbour, with zero interest in woodworking, had inherited a stack of excellent tools, including clamps and a comprehensive range of planes. He exchanged them for a spare set of Dexion shelves that I had been given by an uncle who ...
by nickcrowhurst
Wed Dec 23, 2020 9:56 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

A new Shrike from the Netherlands

Adriaan and his son, from the Netherlands, built this Shrike together in a week:


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by nickcrowhurst
Sun Dec 20, 2020 2:44 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

scarf joints on a band saw

Chris, you are right. My bevy of young ladies has an age range of from 0.6 to well over 70 years. Which brings me to another challenging topic: cutting accurate scarf joints. I've cut one beautiful scarf joint in my life. The rest of them were pretty rubbishy, only rescued by thickened epoxy. Christ...
by nickcrowhurst
Sat Dec 19, 2020 10:18 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

I already have another six pieces of table top ready for the other gunwale, and the 12 pieces for the chines will be just more fun. Anyways, I'm a stubborn old coot. I'll get 'er done. I'm using half a litre of Ever Build 502 adhesive and some stainless steel staples left over from a Vember strip hu...
by nickcrowhurst
Sat Dec 19, 2020 12:15 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Laminating a gunwale

Memo to self: don't build a prototype by the seat of your pants when the recycled timber (table top) is less than half the length of the kayak. If I attempt to adjust these clamps, 6 pieces of timber collapse on the floor. The ends aren't fixed yet, as I'm just concentrating on getting the curve sat...
by nickcrowhurst
Fri Dec 18, 2020 3:46 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

Yellerbelly wrote:
Fri Dec 18, 2020 11:57 am
What do you think about adding a good looking tail? :) #anasacuta

I'm all for attractive tail, (aren't we all?) but perhaps I'll put it in the Build Manual as an option :)
Nick
by nickcrowhurst
Tue Dec 15, 2020 10:11 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

Fish form or Swede form in an Inuit kayak is decided is decided by the relative lengths of the deck beams, of which there are commonly about eleven. The chine shape, and hence the underwater shape, closely follows the same curve. The sheer line is affected by the topside flare, as in the thought exp...
by nickcrowhurst
Tue Dec 15, 2020 8:27 am
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

De-stressing the fuselage frame

Fergus, you neatly and precisely describe the issue. I intend to laminate the gunwales just as I am in the process of doing for the keel. The gunwales in traditional Inuit construction rely on the hull having topside flare to produce the rise at each end of the kayak. Why this is so is not immediate...
by nickcrowhurst
Mon Dec 14, 2020 7:23 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

David, I agree. The lack of bulkheads means a capsize results in water flushing from end to end, no matter how many buoyancy bags you pile in. I wouldn't be happy taking one offshore and solo. I know about sea socks, but I prefer to have a lightweight kayak with bulkheads and hatches, and, as a bonu...
by nickcrowhurst
Mon Dec 14, 2020 6:35 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

David, I'll glue the plywood frames vertically and square to the keel. This is completely different to the traditional steam-bent ribs.
Nick
by nickcrowhurst
Mon Dec 14, 2020 5:11 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Locking in the rocker

Fuselage frame Shrike LV: front half of the keel rocker locked in with three laminations.

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by nickcrowhurst
Mon Dec 14, 2020 4:01 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

The action in the video starts about 5.10, epoxying the glass cloth on the decks.
by nickcrowhurst
Mon Dec 14, 2020 2:48 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Turkish Shrike video^

Tugrul from Istanbul, Turkey has produced a video of his Shrike build:
by nickcrowhurst
Sun Dec 13, 2020 5:56 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Fuselage Shrike LV

I've fixed the forms that will give the Shrike 90% LV fuselage it's accurate keel rocker. I'm just experimenting at present The wood doesn't want to bend that much, so I may laminate the keel. It was time consuming to set up the 13 forms, but this is the most important part if the project is to be w...
by nickcrowhurst
Thu Dec 10, 2020 7:20 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

Port Gaverne is my favourite north coast launch site. It is a sheltered inlet, with access to some wonderful cliff scenery to explore. Even if the wind turns nasty and strongly onshore, one can play, surf and roll in the clear water of the inlet without poking outside. Get there early, as there are ...
by nickcrowhurst
Wed Dec 09, 2020 10:04 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Cloudscape from Peter M and his Shrike

Padstow to port:

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by nickcrowhurst
Tue Dec 08, 2020 4:03 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: A green Shrike?

charleston14 wrote:
Tue Dec 08, 2020 10:47 am
Ballistic nylon fabric is available from point north. Used in skin on frame boats.
Christopher has built a skin-on-frame replica using that material, but it has to be coated, usually with 2-pack paint, and it's rather heavy. I'll bear it in mind, thanks.
by nickcrowhurst
Sun Dec 06, 2020 7:29 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

It’s a bit like a Spitfire, also skin on frame...it’s also made out of something discarded . . That’s the rub and the beauty of it. R.J Mitchell has long been one of my heroes. No major part of the Sptifire's design was original. Mitchell had the intelligence to select the best wings, fuselage cons...
by nickcrowhurst
Sun Dec 06, 2020 7:07 pm
Forum: Sea Kayaking
Topic: Shrike, a lightweight sea kayak for home construction.^
Replies: 624
Views: 64421

Re: Shrike, a lightweight sea kayak for home construction.^

Chris, when I was 12 (1959) I built one of these. Fuselage frame (skin and frame) is the cheapest and simplest way I know to build a decent kayak. Tom Yost has produced many of these designs, open source, but I wish to see if I can reproduce the Shrikes shape and performance by this method. If I can...