Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-22-2014, 02:54 PM   #1
Newbie
 
City: New Castle, NH
Join Date: Jul 2014
Posts: 1
Replacing Aluminum Water Tank GB42

We have sprung a leak in one of our 3 aft aluminum water tanks in our Grand Banks 42 Classic. Each are 90 gallons and are are lined up next to each other in the most aft portion of the lazarette. This is the port side tank. Center tank would have to be removed to get this one out. Looks pretty straight forward as they will fit through the lazarette opening, except for a metal support beam that is welded across the three of them that holds up the sub floor decking sections inside of the lazarette.

Has anyone had any experience with using a replacement bladder tank inside of the existing aluminum tank so that the tanks do not need to be removed.

Thanks.
lasthurrah is offline   Reply With Quote
Old 07-22-2014, 04:45 PM   #2
Senior Member
 
Boydster's Avatar
 
City: Qualicum Beach, British Columbia
Vessel Name: Change of Heart
Vessel Model: Grand Banks 42
Join Date: Mar 2011
Posts: 236
Have you considered posting this on IAGBO?
IAGBO :: Index
__________________
Everything on your boat is broken...you just don't know about it yet.
Boydster is offline   Reply With Quote
Old 07-22-2014, 06:15 PM   #3
Guru
 
N4712's Avatar
 
City: South FL
Vessel Name: Oliver
Vessel Model: Nordhavn 47 Hull# 12
Join Date: Apr 2013
Posts: 3,607
I would call http://atlinc.com sure they could come up with something for you.
__________________
Thanks, Oliver
M/V Oliver
Nordhavn 47 Hull #12
N4712 is offline   Reply With Quote
Old 07-22-2014, 08:27 PM   #4
Guru
 
Capt.Bill11's Avatar
 
City: Sarasota/Ft. Lauderdale
Join Date: Apr 2014
Posts: 5,438
Can you tell where on the tank the leak is located?
Capt.Bill11 is offline   Reply With Quote
Old 07-23-2014, 10:40 AM   #5
Guru
 
HopCar's Avatar
 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 5,308
Oliver has given you good advise. ATL is the class act when it comes to flexible tanks.
In fact they will custom make liners for your tank. It might be cheaper to replace the tank but you should talk to them. I know they make liners for fuel tanks but I'm not sure about potable water.
Retro-Fit Your Failed OEM Rigid Fuel Tank With A Flexible ATL Fuel Bladder!
__________________
Parks Masterson
Retired from Hopkins-Carter Marine Supply
HopCar is offline   Reply With Quote
Old 07-23-2014, 01:36 PM   #6
yo
Veteran Member
 
yo's Avatar
 
Join Date: Sep 2011
Posts: 82
If you can find the leak location just fiberglass over the hole after you drain the tank.
yo is offline   Reply With Quote
Old 07-24-2014, 06:20 AM   #7
Guru
 
Shoalwaters's Avatar
 
City: Rodney Bay Lagoon
Vessel Name: "Dragon Lady"
Vessel Model: DeFever 41
Join Date: Feb 2008
Posts: 681
A glassfiber/epoxy patch is the way to go if you can extract the tank. You might consider cutting the welded beam with a Sawzall at the joints between the tanks. Make bolted joints with backing plates when reinstalling.
__________________
Mike
If all else fails, read the instructions
If it ain't broke, don't fix it
Shoalwaters is offline   Reply With Quote
Old 07-24-2014, 12:23 PM   #8
Guru
 
City: Carefree, Arizona
Vessel Name: sunchaser V
Vessel Model: DeFever 48 (sold)
Join Date: Apr 2008
Posts: 10,186
It may be that the tank failure reason is shared with the other two tanks. Al and galvanic action are all too common. So the why it happened is as important as what to do. I've seen multiple Al tank failures, on the same vessel, due to incompatible metals with all tanks redone after reasons for failure determined.
sunchaser is offline   Reply With Quote
Reply

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


» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 08:18 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012