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Plank - Fiberglass added stiffness
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Topic: Plank - Fiberglass added stiffness (Read 8121 times)
Breizhglace
Newbie
Posts: 16
Plank - Fiberglass added stiffness
«
on:
November 15, 2021, 09:43:53 AM »
Hi group,
I apologize if the topic was already covered. (I know Warren was looking for the info a while back)
I would like to know how much stiffness is going to be added by wrapping fiberglass on the plank.
For now, I plan to wrap the entire plank, plus an additional 4 feet center section, with a 4" overlap in the bottom section.
Current deflection of the plank is 45 mm (1"3/4) with skippers weight
Thanks a lot,
Nic
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Bob Gray
Class Member
Posts: 194
Re: Plank - Fiberglass added stiffness
«
Reply #1 on:
November 15, 2021, 08:33:29 PM »
It will probably stiffen it 3 or 4 pounds per inch.
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Breizhglace
Newbie
Posts: 16
Re: Plank - Fiberglass added stiffness
«
Reply #2 on:
November 19, 2021, 08:54:22 PM »
Thanks a lot Bob!
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wnethercote
Class Member
Posts: 111
Re: Plank - Fiberglass added stiffness
«
Reply #3 on:
November 23, 2021, 01:35:51 PM »
I am probably too late to stop you, but 1 3/4 inches deflection under your weight is the recommended standard deflection for a plank. Why do you want to make it stiffer? I may make your DN harder to sail, although some do like a twitchy boat.
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