Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 30-04-2015, 19:46   #1
Registered User
 
harmarty's Avatar

Join Date: May 2011
Location: NY/NJ
Boat: Hunter Cherubini 37'
Posts: 18
Send a message via Yahoo to harmarty
Filling inflatable rib with two part foam? Has anyone done this or heard of it being

I have an inflatable RIB Avon pic dinghy I am considering filling it with two part foam. Has anyone heard of this?thanks harry


Sent from my iPad using Cruisers Sailing Forum
__________________

__________________
harmarty is offline   Reply With Quote
Old 30-04-2015, 20:33   #2
Registered User
 
Reefmagnet's Avatar

Join Date: May 2008
Location: puɐןsuǝǝnb 'ʎɐʞɔɐɯ
Boat: Nantucket Island 33
Posts: 2,734
Re: Filling inflatable rib with two part foam? Has anyone done this or heard of it be

I read about someone that did this a long time ago. It was a disaster. It made the dinghy heavy and it fractured and crushed after a very short while.
__________________

__________________
Reefmagnet is offline   Reply With Quote
Old 30-04-2015, 20:44   #3
Senior Cruiser
 
SkiprJohn's Avatar

Cruisers Forum Supporter

Join Date: May 2006
Location: Kea'au, Big Island, Hawaii
Boat: Cascade, Sloop, 42 - "Casual"
Posts: 14,192
Re: Filling inflatable rib with two part foam? Has anyone done this or heard of it be

Quote:
Originally Posted by harmarty View Post
I have an inflatable RIB Avon pic dinghy I am considering filling it with two part foam. Has anyone heard of this?thanks harry


Sent from my iPad using Cruisers Sailing Forum
I had a friend that tried something similar. I'm not certain what he used but when he poured it in it melted the seams.

Anyway you could patch up what you have?
__________________
John
SkiprJohn is offline   Reply With Quote
Old 05-05-2015, 16:40   #4
Registered User

Join Date: Oct 2011
Posts: 2,432
Re: Filling inflatable rib with two part foam? Has anyone done this or heard of it be

A friend of mine did it, and said with the time and money spent, he should have bought a decent used one. And it was heavy. Not a great idea. Just my 2 cents worth. _____Grant.
__________________
gjordan is offline   Reply With Quote
Old 05-05-2015, 17:01   #5
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 19,342
Re: Filling inflatable rib with two part foam? Has anyone done this or heard of it be

Well, if you could successfully do it it wont sink! But you better have it sealed completely from water intrusion or it will migrate in the foam and you'll have an 800 pound dingy!
It may add 30-40 lbs to the boat also even with dry foam. If I remember right light foam is about 2.4# (?) per cubic foot...
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is offline   Reply With Quote
Old 05-05-2015, 17:40   #6
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
Re: Filling inflatable rib with two part foam? Has anyone done this or heard of it be

We have cruising friends that did this. It added 80-90lbs of weight and within a year the foam had started to "melt" and deform badly. Really misshapen and almost not usable because the foam breaks and starts to hinge all over.

So if you want to spend a bit of money, add a lot of weight, and get a few months more life out of it - go for it!

BTW, if you do go for it (I recommend against), make sure you have experience with 2-part foam. This isn't a "mix it up and pour it in" thing - if you don't have experience with it, you will have a disaster and a mess of epic proportion.

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 05-05-2015, 17:47   #7
Registered User
 
Nicholson58's Avatar

Join Date: Jan 2011
Location: Live aboard
Boat: Camper & Nicholson58 Ketch - ROXY Traverse City, Michigan No.668283
Posts: 3,466
Images: 83
Re: Filling inflatable rib with two part foam? Has anyone done this or heard of it be

Quote:
Originally Posted by harmarty View Post
I have an inflatable RIB Avon pic dinghy I am considering filling it with two part foam. Has anyone heard of this?thanks harry


Sent from my iPad using Cruisers Sailing Forum
2-Part Urethane is an exothermic reaction. In thin pours, the heat can be dissipated. In a thick pour, it may become very hot and damage your RIB. In an extreme case, the curing foam billet can explode/rupture due to thermal stress.

Urethane is not absolutely water tight. It has a permeability and will eventually become water filled.
__________________
Nicholson58 is offline   Reply With Quote
Old 05-05-2015, 17:58   #8
Registered User
 
UNCIVILIZED's Avatar

Join Date: Jun 2014
Location: Up the mast, looking for clean wind.
Boat: Currently Shopping, & Heavily in LUST!
Posts: 5,629
Re: Filling inflatable rib with two part foam? Has anyone done this or heard of it be

Do the math, based on your tube size & lengths. With 15" diameter tubes, at say 12' total per side, you're looking at 30cuft of foam, conservatively. And at 2lbs per...
What everyone else already said.
__________________

__________________

The Uncommon Thing, The Hard Thing, The Important Thing (in Life): Making Promises to Yourself, And Keeping Them.
UNCIVILIZED is offline   Reply With Quote
Reply

Tags
inflatable, rib

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
Has Anyone Heard of Knowsley Winches ? haidan Deck hardware: Rigging, Sails & Hoisting 10 20-07-2012 20:06
Leopard 42: Has Anyone Heard if Leopard Will Reintroduce a 42 or 43 ? bradb Robertson & Caine 37 21-10-2011 20:41
Has Anyone Heard of Lemma Europe Insurance Company ? YACHT TARENTELA Cruising News & Events 1 18-05-2010 05:28
Has Anyone Heard from Chief Engineer? Alexei Engines and Propulsion Systems 5 21-07-2009 18:41
Has anyone ever heard of "Nemo" equipment? onehunglow Deck hardware: Rigging, Sails & Hoisting 3 21-08-2007 21:08



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 17:55.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.