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Re: Material: Fiberglass Lay-up and Weight advice
By:Rob Macks/Laughing Loon CC&K
Date: 3/31/2014, 6:02 pm
In Response To: Re: Material: Fiberglass Lay-up and Weight advice (Mike Bielski)

What does two layers mean? Is it 2 layers on both sides?

What weight are they using to measure deflection?

m

Two layers means 2 layers on both sides.

They use a testing machine which applies increasing pressure to failure.

Obviously, not real world results, but perhaps a valid gauge of comparison.

Some lay-ups with thinner cores bend more before breaking. If you were building a sailboat with forces of a mast and centerboard to deal with, stiffness would be more important.

For my purposes the comparison between 1/4" and 3/16" cores back-up my experience that there is not much difference in strength, but 3/16" strips are much easier to twist, bend and place on a hull.

I believe Nick is more familiar with the testing details.

Rob

Messages In This Thread

Material: Fiberglass Lay-up and Weight advice *PIC*
Rob Macks/Laughing Loon CC&K -- 3/31/2014, 3:34 pm
Re: Material: Fiberglass Lay-up and Weight advice
Rob Macks/Laughing Loon CC&K -- 3/31/2014, 4:34 pm
Re: Material: Fiberglass Lay-up and Weight advice
Mike Bielski -- 3/31/2014, 5:30 pm
Re: Material: Fiberglass Lay-up and Weight advice
Rob Macks/Laughing Loon CC&K -- 3/31/2014, 6:02 pm
Re: Material: Fiberglass Lay-up and Weight advice *PIC*
Nick Schade - Guillemot Kayaks -- 3/31/2014, 6:32 pm
Re: Material: Fiberglass Lay-up and Weight advice
Mike Bielski -- 3/31/2014, 7:52 pm
Re: Material: Fiberglass Lay-up and Weight advice
Nick Schade - Guillemot Kayaks -- 3/31/2014, 8:43 pm
Testing in general and fiber to wood grain
Mike Bielski -- 3/31/2014, 10:02 pm
Re: Material: Fiberglass Lay-up and Weight advice
ddaniels -- 4/1/2014, 4:19 pm
Re: Material: Fiberglass Lay-up and Weight advice
Rob Macks/Laughing Loon CC&K -- 4/1/2014, 6:31 pm
Re: Material: Fiberglass Lay-up and Weight advice
Etienne Muller -- 4/2/2014, 4:20 am
Re: Material: Fiberglass Lay-up and Weight advice
Mike Bielski -- 4/2/2014, 9:49 am
Re: Material: Fiberglass Lay-up and Weight advice
Rob Macks/Laughing Loon CC&K -- 4/2/2014, 12:42 pm
Re: Material: Fiberglass Lay-up and Weight advice
JohnAbercrombie -- 4/2/2014, 1:17 pm
Re: Material: Fiberglass Lay-up and Weight advice
Mike Bielski -- 4/2/2014, 1:23 pm
Re: Material: Fiberglass Lay-up and Weight advice
Rob Macks/Laughing Loon CC&K -- 4/2/2014, 1:41 pm
Re: Material: Fiberglass Lay-up and Weight advice
JohnAbercrombie -- 4/2/2014, 1:50 pm
Re: Material: Fiberglass Lay-up and Weight advice
Mike Bielski -- 4/2/2014, 10:50 pm
Re: Material: Fiberglass Lay-up and Weight advice
John Messinger -- 4/3/2014, 10:00 am
Re: Material: Fiberglass Lay-up and Weight advice
Bill Hamm -- 4/2/2014, 3:15 pm
Re: Material: Fiberglass Lay-up and Weight advice *NM*
John Messinger -- 4/3/2014, 10:05 am
Re: Material: Fiberglass Lay-up and Weight advice
John Messinger -- 4/3/2014, 10:44 am