Member Map Go to the Home Page Portal Cruisers & Sailing Forum Cruisers & Sailing Photo Gallery Manage Your Profile! Member Directory Search past discussions! Frequently Asked Questions Community Policies & Posting Rules Register Today, Its FREE!

Go Back   Cruisers & Sailing Forums > Engineering & Systems > Construction, Maintenance & Refit





 
 
Thread Tools Rate Thread Display Modes
Prev Previous Post   Next Post Next
Old 04-11-2009, 13:22   #1
Registered User
 
thinwater's Avatar
 
Join Date: Nov 2008
Location: Deale, MD
Boat: PDQ Altair, 32 ft, "Shoal Survivor"
Posts: 313
Carbon Fiber for Jordan Series Drouge Attachment

My boat is cored on the deck and topsides (below the water line is solid), and I am fussing over how to get some very strong attachment points. The design guide calls for 7,500 pounds.

Cleats. There are 2 large stern cleats in solid glass, but they are not backed well enough. Because they are under a carpet liner and because of the corner they are in, it is not simple to add a big backing plate. Possible, though, by simply laying on more layers of glass. The cleats might have to be larger and changed to ss. Might not be able to repar the carpet, and it does not need replaced yet.

Chain plates on the sides. Accesible, but it is a cored section, so I would have some extra work there. Ugly too.

Carbon fiber chainplates. Accesible. I could place these a number of places. I eliminate corrosion and leakage issues. They will be nearly invisable. A bit more work, but not bad.

I have made reacher attachment points using Kevlar before, for the same reasons; Kevlar honey comb hull. They worked very well for over 15 years.

* Unidirectional CF sufficient to hold 12,000 pounds, perhaps. Will calculate.
* easy to spread the load over several square feet. I understand I can rely on ~ 600 pounds in shear for epoxy secondary bonding, so though only 12.5 in2 are required, I will get much more. I imagine 1 layer of 3-6 oz glass cloth will cover the fiber for bonding and protection.
* Line hole with ss tube and washers, sized to fit ~3/8" ss shackle.
* Pin is horizontal, canted inwards to match bridle angle. Shackle can swivel in verticle plane.
* Can be located in a transom posstion that is safer to reach (top step).

Your thoughts? Specifically, any experience in this application? It is certainly less demanding than a mast chainplate in terms of stress and cycling.
__________________
"Climbing (sailing) is like fun, only different."

Tom Pattey, Scottish ice climber



http://sail-delmarva.blogspot.com/
thinwater is offline   Reply With Quote
 

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Carbon Fiber Chainplates Zednotzee Deck hardware: Rigging, Sails & Hoisting 12 03-11-2009 06:29
Blackbird Carbon Fiber Guitar? markpj23 Recreation, Entertainment & Fun 21 08-04-2009 16:24
Paint carbon fiber? mestrezat Deck hardware: Rigging, Sails & Hoisting 3 14-03-2009 21:49
Jordan Series Drogue vs Para-Anchor? markpj23 Health, Safety & Related Gear 4 14-02-2009 05:25
carbon fiber shrouds and forestay dpollitt General Sailing Forum 4 13-05-2008 15:59


All times are GMT -7. The time now is 05:26.


Other Social Knowledge forum communities:
Cooking Forum - Sailing Forum - Early Retirement - Airstream Trailer - Aquarium Forum - Royal Forum - Book Forum - Volkswagen Touareg Forum - Jeep Wrangler Forum - Whitewater Kayaking & Rafting Forum - Fiberglass RV Forum - RV Forum - Truck Conversion - U2 Music Forum
Social Knowledge Networks
Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2009, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.0
© copyright 2002-2009 Social Knowledge, LLC All Rights Reserved.