Folding Kayaks Forum

The user forum for FoldingKayaks.org
It is currently Wed Oct 18, 2017 12:42 pm

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 8 posts ] 
Author Message
 Post subject: Sonnet 17.5 video
PostPosted: Wed Apr 02, 2008 10:45 am 
lord high faltbotmeister

Joined: Fri Apr 15, 2005 8:44 am
Posts: 553
Location: Colorado
The homebuilt Sonnet 17.5 inflatable / folder / hybrid is 17.5' X 23" (533cm X 58cm)
and is designed for extended touring duties. In the short video clip below, it can be
seen near Dundee, Scotland on a trial run. On the water, it looks and performs like a
proper sea kayak, and not like a typical inflatable. Assembly is under 10 minutes.

The first paddler weighs 220lbs (100kg) , and this shows the remaining "freeboard"
of this high volume design. 100 lbs (45kg) of additional gear is within reason as
the designed pounds per inch ( 2.5cm) immersion rate is nearly 100 lbs.

http://www.dropshots.com/daverob#date/2 ... 1/16:39:04

Tom


Top
 Profile  
 
 Post subject:
PostPosted: Wed Apr 02, 2008 11:30 am 
nice boat... :)


Top
  
 
 Post subject:
PostPosted: Wed Apr 02, 2008 11:08 pm 
lord high faltbotmeister

Joined: Fri Apr 15, 2005 8:44 am
Posts: 553
Location: Colorado
Quote:
nice boat...


Thanks...Let me know how the double performs :)

tdy


Top
 Profile  
 
 Post subject:
PostPosted: Thu Apr 03, 2008 7:12 am 
It looks a lot more rigid than I would have expected.


Top
  
 
 Post subject:
PostPosted: Thu Apr 03, 2008 9:17 am 
lord high faltbotmeister

Joined: Fri Apr 15, 2005 8:44 am
Posts: 553
Location: Colorado
Quote:
It looks a lot more rigid than I would have expected.


The Sonnet's holds their shape well in the water, but there is flex, and that's a good thing.

The key is having 2 sponsons per side, with a single 3/4" side stringer wedged
between them . When inflated, the sponsons press against the tube, and the result
assured rigidty, and shape. The greater the sponson's diameter, the more rigid the
frame. The round lower sponsons provide a multi-chine cross section shape. These
are low pressure folding kayak type sponsons, so they require no hand pump or
expensive valves.

The keel is also a 3/4" tube, though none of the 3 stringers connect to each other at the
stems. In other words, you can't assemble the frame free standing like a normal folder
as it's nothing more than 3 independent tubes, and that's the key to it's rapid assembly.
In addition, assembly is in-skin, with no zippers or flaps to leak, meaning that the skin is
as watertight as a Feathercraft.

http://yostwerks.com/SA1.html - Sonnet 16 Assembly

Tom


Top
 Profile  
 
 Post subject: Re: Sonnet 17.5 video
PostPosted: Sat Jan 07, 2017 3:12 pm 
paddler

Joined: Wed Apr 09, 2014 6:40 am
Posts: 5
Location: Manhattan
Hi I am interested in building the Sonnet 17.5 but the link to the video does not seem to work. Does anyone have any information and pictures on the completed product? Thanks, Chris

_________________
Long Haul Mark II Expedition; Innova Solar 410C


Top
 Profile  
 
 Post subject: Re: Sonnet 17.5 video
PostPosted: Sun Jan 08, 2017 12:43 am 
lord high faltbotmeister

Joined: Fri Oct 07, 2011 1:51 pm
Posts: 600
Location: Colombo, Sri Lanka
Tom unfortunately stopped being around a while back, bur fortunately his good work is preserved on a mirror site here: http://www.yostwerks.org/

_________________
Simon

Pakboats Quest 135, Nautiraid Narak 460, 416 & K1 (sold my 550), First light 420, Feathercraft Wisper, Fujita Alpina AL-1 400, Incept k40 (for sale)
Non-folders: Cape Falcon F1. Beth sailing canoe, 2014 Hobie Adventure Island


Top
 Profile  
 
 Post subject: Re: Sonnet 17.5 video
PostPosted: Sun Jan 08, 2017 9:40 am 
paddler

Joined: Wed Apr 09, 2014 6:40 am
Posts: 5
Location: Manhattan
Thanks, I feared as much. Unfortunately the yostwerks.org does not contain a working link to a completed Sonnet 17.5 nor the also interesting 14-6 and since the demise of Folbot it seems very difficult to locate commercially produced sponsons. Tom himself I believe once remarked that if he thought his home built sponson designs worked better than the Folbot ones he would be using them. If anyone has any good ideas on where to source proper sponsons I would be glad of them.

_________________
Long Haul Mark II Expedition; Innova Solar 410C


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB® Forum Software © phpBB Group