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Re: S&G: Ultralight construction
By:Bill Hamm
Date: 8/20/2012, 2:21 am
In Response To: S&G: Ultralight construction (Raymond)

: I completed a Shearwater 16 coming in at 40 lbs . This is still
: heavy for my daughter 5:3 , 100 lbs to lift on to a car.

: Looking on the internet I came across Betsie Bay Kayaks where there
: is a 16 ft kayak at 28 lbs . Expensive .
: I was thinking of building her a Shearwater 14 and aiming for below
: 30 lbs.

: To achieve this weight I was thinking of the following:
: Using 3mm Okume rather than 4 mm
: Sheathing the boat in Carbon twill 4.7 oz. Actually I like the look
: of Carbon and the weave is very attractive and I plan varnishing
: the carbon. Will this save weight .? cost is not a factor here ,
: just weight saving
: Alternatively using 4oz S Glass satin cloth on the outside , this
: would be painted with linear polyurethane.
: Eliminating glassing the interior , only using glass at the seams .
: Making the cockpit coaming of carbon
: Eliminating endpours
: Judicious and carful use of resin.
: I understand that S glass is 25% stronger than E glass, and that
: Carbon is 100%stronger than E glass but consumes more resin(
: weight)
: Could a 30 lb weight be achieved ?
: Opinions of contributors would be greatly appreciated.

The extra weight is very likely in the epoxy, not the ply nor the cloth. The exotic cloth materials very likely will end up weighing more, not less, they are far harder to wet out than fiberglass so you'll very likely end up with a heavier much more expensive boat.

Bill H.

Messages In This Thread

S&G: Ultralight construction
Raymond -- 8/16/2012, 10:59 am
Re: S&G: Ultralight construction
Paul G. Jacobson -- 8/16/2012, 11:51 am
No cloth
Jay Babina -- 8/16/2012, 3:48 pm
Ultralight
Raymond Pilot -- 8/17/2012, 2:26 pm
Re: Ultralight
ancient kayaker -- 8/17/2012, 6:17 pm
Re: Ultralight
Paul G. Jacobson -- 8/19/2012, 4:11 pm
Re: No cloth
James -- 8/25/2012, 8:41 pm
Re: No cloth *PIC*
ancient kayaker -- 8/25/2012, 9:39 pm
Re: No cloth
Bill Hamm -- 8/28/2012, 1:55 am
Re: No cloth *PIC*
Yostwerks -- 8/28/2012, 9:07 am
Re: No cloth
ancient kayaker -- 8/28/2012, 5:38 pm
Re: No cloth *PIC*
Yostwerks -- 8/29/2012, 9:07 am
Re: No cloth
ancient kayaker -- 8/29/2012, 9:44 am
Re: No cloth
Yostwerks -- 8/29/2012, 10:07 am
Re: No cloth
Bill Hamm -- 8/29/2012, 3:17 am
Re: No cloth
Yostwerks -- 8/29/2012, 9:21 am
Re: No cloth
Bill Hamm -- 8/28/2012, 1:57 am
Re: S&G: Ultralight construction
Stephen Troy -- 8/16/2012, 11:54 am
Re: S&G: Ultralight construction
John Abercrombie -- 8/16/2012, 12:06 pm
Re: S&G: Ultralight construction
dave g -- 8/16/2012, 10:17 pm
Re: S&G: Ultralight construction
Greg H -- 8/16/2012, 1:32 pm
Re: S&G: Ultralight construction
John Abercrombie -- 8/16/2012, 2:09 pm
Re: S&G: Ultralight construction *PIC*
Bryan k -- 8/16/2012, 2:52 pm
Re: S&G: Ultralight construction
Stephen Troy -- 8/16/2012, 3:48 pm
Re: S&G: Ultralight construction
Paul G. Jacobson -- 8/19/2012, 4:25 pm
Re: S&G: Ultralight construction
Stephen Troy -- 8/19/2012, 7:34 pm
Re: S&G: Ultralight construction
Bill Hamm -- 8/20/2012, 2:25 am
Re: S&G: Ultralight construction
ancient kayaker -- 8/20/2012, 2:59 pm
Re: S&G: Ultralight construction
John Abercrombie -- 8/20/2012, 8:55 pm
Re: S&G: Ultralight construction *PIC*
Jeff Horton -- 8/16/2012, 3:04 pm
Re: S&G: Ultralight construction
Kurt Maurer -- 8/16/2012, 8:29 pm
S-O-F time!
Rob Macks/Laughing Loon CC&K -- 8/16/2012, 3:58 pm
Re: S-O-F time!
Bill Hamm -- 8/20/2012, 2:28 am
Library :) *NM*
Rob Macks/Laughing Loon CC&K -- 8/20/2012, 7:25 am
3 new at $999 !
Bill Hamm -- 8/20/2012, 2:29 am
Re: S&G: Ultralight construction
ancient kayaker -- 8/16/2012, 4:19 pm
Re: S&G: Ultralight construction *PIC*
Marc Upchurch -- 8/16/2012, 6:22 pm
Re: S&G: Ultralight construction
Bill Hamm -- 8/20/2012, 2:30 am
Re: S&G: Ultralight construction *PIC*
Allan -- 8/16/2012, 11:01 pm
Re: S&G: Ultralight construction
Brian Nystrom -- 8/17/2012, 6:49 am
Re: S&G: Ultralight construction
Bill Hamm -- 8/20/2012, 2:21 am
Re: S&G: Ultralight construction
Alex Ferguson -- 8/22/2012, 5:09 am
Re: S&G: Ultralight construction
Yostwerks -- 8/28/2012, 9:31 am
Re: S&G: Ultralight construction
Alex Ferguson -- 8/28/2012, 6:15 pm
Re: S&G: Ultralight construction
Alex Ferguson -- 8/28/2012, 6:18 pm
Re: S&G: Ultralight construction
Niven Paine -- 8/28/2012, 10:01 pm