Go Back   Cruiser Log World Cruising & Sailing Forums > Cruising Forums > General Cruising Forum
Cruiser Wiki

Join Cruiser Log Today

Reply
 
Thread Tools Search this Thread Display Modes
 
Old 06-24-2007, 10:31 AM   #1
Lieutenant
 
Join Date: Jan 2007
Posts: 84
Default

I am wanting to install a water bladder. The spaces is at an angle and not tall enough to fully fill a bladder.

This is under the aft bunk and is only 8 inches and smaller going aft but over 68 inches long and about 36 inches wide. Not very usable. Can I put a stock 10 inch tall bladder in there without much problems in a 3 year coastal cruise?

Do I need to do anything to keep it from moving around? Chaft? Any other thing I should know?
__________________

__________________
Cruising Bahamas
Lynx is offline   Reply With Quote
Old 06-24-2007, 12:04 PM   #2
Moderator
 
redbopeep's Avatar
 
Join Date: Jun 2007
Home Port: Washington DC
Vessel Name: SV Mahdee
Posts: 3,185
Default

Hi there,

We've only had a water bladder for about 10 months. So far, no problems. I worry constantly about the connections--but that's just me. It is kept in place by its own weight and the size of the space it resides in, we haven't secured it in any other way. If we were going cruising, we'd put a couple web straps across the top as it could possibly move if we were REALLY heeled. Its under a seat and we have access to it via a panel under the seat cushion. It could come out of that panel--thus a reason for straps. We've needed the access to push air out of it a couple times--if we fill the tank too quickly with our hose, we can get as much air in the bladder as water. A slow fill does the trick without need for burping it. This experience makes me realize I wouldn't want a bladder someplace that I couldn't squeeze the air out. No chafe to speak of but we haven't been cruising with it.

Good luck!

P.S. That sounds like a great place to store some emergency building materials. I have stainless rod, wire, old rigging kept as spare parts, plywood, all kinds of things that are hard to find a home for onboard and would fit such a location.
__________________

__________________
"Do or do not. There is no try." - Yoda

What we're doing - The sailing life aboard and the Schooner Chandlery.

redbopeep is offline   Reply With Quote
Old 06-24-2007, 12:47 PM   #3
Admiral
 
Auzzee's Avatar
 
Join Date: Jan 2005
Home Port: Darwin
Vessel Name: Sandettie
Posts: 1,726
Default

Hi Lynx,

My experience with bladders is that they have eyelets on the seam for the purpose of holding them down. This generally would mean a lateral rather than a vertical anchor. I would ensure the bladder is secured even if it conforms to the structure in which it is kept. In the event of a knock down, 100 litres of water has the same momentum potential as a very big man. Imagine a 220lb unconscious man bouncing around below deck during a knock down and you can imagine the damage the full bladder could do.

Putting a 10" high bladder in an 8" high space should not be a huge problem as long as the covering over the space is solid and well anchored. Most bladders I guess do not have enough baffles to prevent a hydraulic surge which could easily lift the not-so-well-screwed-down bed base above it.

Chafing will always be of concern purely because there is a fluid in a non rigid structure. If it can move, it will chafe. However, I think the quality of modern materials is such that chafe will only be a problem where the bladder comes into contact with sharp or protruding objects.

I had installed an 80 litre bladder in a previous boat. I was careful to loop plumbing lines to prevent stress on the fittings and it worked well. The only problem was no matter what I tried I could not rid the thing of the plastic taste....and I tried everything from sodium bicarbonate to tablets, powders, chemicals.

I think bladders are an excellent choice for emergency water and a far better proposition than lashing jerry cans to the safety railings on deck.

Cheese

David.
__________________
"if at first you don't succeed....Redefine success"!


Auzzee is offline   Reply With Quote
Old 06-24-2007, 05:32 PM   #4
Moderator
 
redbopeep's Avatar
 
Join Date: Jun 2007
Home Port: Washington DC
Vessel Name: SV Mahdee
Posts: 3,185
Default

Quote:
Originally Posted by Auzzee View Post
Hi Lynx,

My experience with bladders is that they have eyelets on the seam for the purpose of holding them down.
Yes, and the eyelets look very wimpy in comparison to the weight of the bladder--thus if possible placing web tie downs over the bladder (secured to something stout on the either side of it) makes more sense.
__________________
"Do or do not. There is no try." - Yoda

What we're doing - The sailing life aboard and the Schooner Chandlery.

redbopeep is offline   Reply With Quote
Old 06-24-2007, 10:14 PM   #5
Admiral
 
Auzzee's Avatar
 
Join Date: Jan 2005
Home Port: Darwin
Vessel Name: Sandettie
Posts: 1,726
Default

Regarding the integrity of the eyelets; I had the same concerns as redbopeep when I purchased my water bladder. The manufacturers technical information stated clearly that each eyelet was designed to hold the weight of the bladder when full. I took this to mean the suspended weight, not the swinging weight.

In most cases the bladders have four eyelets through double thicknesses of welded material which will keep the 'tank' under control. Although I did not use any straps over the tank, I guess they would be useful when the tank is full, but may lose their effectiveness, proportionate to the reducing volume of the bladder unless a 'net' style of web weave is employed.

Either way, it is unwise to keep anything of such bulk on your boat without tying it down.

David

PS..I should point out that I have no experience with the Plastimo bladders sold by WM. They are a nylon sleeve containing a PVC liner. The style I used was a very tough orange coloured fabric moulded over a synthetic webbed mesh (much like the make-up of a radial tyre). Looking at the blue nylon bladders, I can fully understand redbopeeps concerns about the 'wimpy' eyelets of that style of container.
__________________
"if at first you don't succeed....Redefine success"!


Auzzee is offline   Reply With Quote
Old 06-24-2007, 10:35 PM   #6
Moderator
 
redbopeep's Avatar
 
Join Date: Jun 2007
Home Port: Washington DC
Vessel Name: SV Mahdee
Posts: 3,185
Default

Ours is the blue WM type.
__________________
"Do or do not. There is no try." - Yoda

What we're doing - The sailing life aboard and the Schooner Chandlery.

redbopeep is offline   Reply With Quote
Old 06-24-2007, 10:46 PM   #7
Moderator
 
redbopeep's Avatar
 
Join Date: Jun 2007
Home Port: Washington DC
Vessel Name: SV Mahdee
Posts: 3,185
Default

Lashing things to safety railings (be it water, fuel, etc) always seems like a bad idea to me. Even if lashed to deck fittings made specifically for this purpose (not having to use those for the lifelines) I don't like the idea. Things are in the way on deck, likely to be lost overboard, and likely to do damage to crew or boat when that big wave takes them out. My husband and I have had quite a few testy little rows over this--I'm the "stash it away" person because of my caution and desire for orderliness--and he's the "lash it on" type of guy because he likes to "see" things and have them "convenient" and he's much more confident of his knots than I am of mine .

I agree about the webbing/net option instead of just web cargo straps straight over. I haven't figured this one out--which is why our water bladder is just sitting below that seat rather than being more strongly secured.

__________________
"Do or do not. There is no try." - Yoda

What we're doing - The sailing life aboard and the Schooner Chandlery.

redbopeep is offline   Reply With Quote
Old 06-25-2007, 03:02 AM   #8
Lieutenant
 
Join Date: Jan 2007
Posts: 84
Default

Eyelets - One maker I was able to access their web site and instructions. They said that their eyelets was not for supporting the Bladder. This was the black, more expensive at West Marine. It would take real strong ones to handle sea conditions with a 1/2 full tank surging around.

Thanks, Please keep it up. I may just buy 2 and when/if one goes replace it.
__________________

__________________
Cruising Bahamas
Lynx is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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
Decided To Install Diesel Generator Kurt O Engines | Propulsion | Generators 2 09-11-2010 06:14 PM
Water Water Everywhere And Hopefully More Than A Drop To Drink! mico Other Equipment 8 07-15-2010 09:25 AM
Water Heaters Sailboatman Other Equipment 13 03-02-2008 11:34 PM
Water Filters triton Other Equipment 2 12-31-2007 01:13 PM
Pigs On The Water Gallivanters The Poop Deck 4 07-27-2007 07:16 PM

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

RV & Travel Trailer Communities

Our RV & Travel Trailer sites encompasses virtually all types of Recreational Vehicles, from brand-specific to general RV communities.

» More about our RV Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


All times are GMT. The time now is 07:05 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.0