Like Tree0Likes

aluminum gas tanks

Reply
Old 02-14-2004, 10:53 AM
  #1
Official OSO boat whore
Charter Member
Thread Starter
Trade Score: (2)
 
Join Date: Oct 2000
Location: Mequon, WI
My Boats: 8' row boat
Posts: 6,157
Default aluminum gas tanks

Is there a reason why every boat manufacturer builds their gas tanks out of aluminum? Why not some composite material?
Cord is offline  
Reply With Quote
Old 02-14-2004, 11:39 AM
  #2
Registered
 
robyw1's Avatar
 
Join Date: Jul 2003
Location: Spring, TX
My Boats: 1998 Wellcraft 22' Scarab
Posts: 2,759
Default

Mine was built out of composite and I can't understand why I get fumes out of it. I pressure tested, inspected the tank from top to bottom and it had no leaks holding pressure indefinetly. When I rebuilt the floor in the boat and took it out on the lake one time the fumes are back. I'm beside myself on where it could be coming from.

Roby
robyw1 is offline  
Reply With Quote
Old 02-14-2004, 12:08 PM
  #3
Offshore Addiction
Guest
 
Posts: n/a
Default

alot of the times its due to coast gaurd standards,there is plastic composite tanks that usually are short lifespanned and dont maintain there shape,but aluminum tanks are more easily baffled for high speed usage,now there are a couple of manufacturers that have designed cells that are intergrated into the hulls,but it goes somethin like the coast gaurd wants a second barrier incase of puncture on the hull!
 
Reply With Quote
Old 02-14-2004, 02:28 PM
  #4
Official OSO boat whore
Charter Member
Thread Starter
Trade Score: (2)
 
Join Date: Oct 2000
Location: Mequon, WI
My Boats: 8' row boat
Posts: 6,157
Default

Rob-what is your tank made of?

Offshore-so the coasties want it to be double walled?
Cord is offline  
Reply With Quote
Old 02-14-2004, 05:21 PM
  #5
Registered
 
robyw1's Avatar
 
Join Date: Jul 2003
Location: Spring, TX
My Boats: 1998 Wellcraft 22' Scarab
Posts: 2,759
Default

I'm not sure what exactly it is made of but it is brown and is not aluminum.

Roby
robyw1 is offline  
Reply With Quote
Old 02-14-2004, 05:55 PM
  #6
Charter Member
Charter Member
Trade Score: (1)
 
Ted G's Avatar
 
Join Date: Jan 2001
Location: Edgerock Baby!!
My Boats: Marlago 35 FS, 18 Neptune CC
Posts: 7,661
Default

It may be fiberglass and that may be why you are getting fumes. There is a certain amount of porosity in all fiberglass and more in some. In an instance where the glass is not perfect or the cure wasn't proper you are gonna get some seepage-in your case fumes. Remember that gas molecules are smaller that water so it is easier for gas to get through. In order to do a proper resin fuel tank it has to be a thick, well cured layup or it is gonna allow fumes to pass. You might want to coat the tank with epoxy paint if you can get it out-should stop the fumes.


As for aluminum-think $$$$$-much cheaper and easier to make big tanks from aluminum than anything else.
__________________
Chesapeake Bay Powerboat Association
www.cbpba.com
Ted G is offline  
Reply With Quote
Old 02-15-2004, 08:48 AM
  #7
Registered
 
Join Date: Nov 2000
Location: Westport, Kentucky
My Boats: Baja Force 235
Posts: 1,282
Default

A fuel tank that has porosity? That sounds like a fuse!
BadDog is offline  
Reply With Quote
Old 02-15-2004, 08:58 AM
  #8
Charter Member #232
Charter Member
 
Audiofn's Avatar
 
Join Date: Oct 2000
Location: Carlisle, MA USA
My Boats: 1979 Formula 302, 99 Formula 353, 81 Donzi 18 2+3 with 454
Posts: 18,379
Default

Roby1: We found that mine was leaking fumes at the connections. Do you have them double clamped? Are your clamps set up so that the screw down is on opposite sides of the tube and also that they pull tight in opposite directions?

Jon
__________________
Put your best foot forward!
Audiofn is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
RunninHotRacing163.1
General Boating Discussion
19
02-11-2011 09:18 AM
Dueclaws
General Q & A
5
02-10-2011 04:38 PM
phughes69
General Boating Discussion
6
05-05-2008 02:40 PM
jdub
General Boating Discussion
4
05-02-2006 12:52 PM
gripit
Cigarette
20
05-31-2005 02:43 PM



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 On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 01:24 PM.


Copyright 2011 OffShoreOnly. All rights reserved.