Go Back  Offshoreonly.com > Technical > General Q & A
new fuel cell dosen't sit all the way >

new fuel cell dosen't sit all the way

Notices

new fuel cell dosen't sit all the way

Old 02-12-2012, 01:09 AM
  #1  
Registered
Thread Starter
 
Join Date: May 2010
Location: Grand Rapids, Mi
Posts: 55
Likes: 0
Received 0 Likes on 0 Posts
Default new fuel cell dosen't sit all the way

I'm installing a new v shaped tank in my boat. It sits in the middle of the boat but the angle of the tank is a bigger than the hull. It sits good on the edges but there is a about a 2" gap in the middle to the hull. Its a 56 gallon and is about 70" long is this normal or should I be concerned that all the weight is on the edges?
gttdnbman is offline  
Old 02-12-2012, 07:10 AM
  #2  
Registered
 
Join Date: Feb 2012
Location: westville, NJ
Posts: 4,008
Likes: 0
Received 2 Likes on 2 Posts
Default

build a frame for it. start with a two by four or 2 one by fours or a 5/4 by four until you get thickness right straight down the keel to support the center. also need 1/4 inch or so black neoprene-i think- foam pad under tank. looks like wet suit material. only it is closed cell foam. doesn't soak up water. 56 gallons 6 feet long. i am guessing only about 3 feet wide. 2 more longitudinal "stringers" between center and edges you could probably get away with. ideally you want a marine plywood box set up off the keel so bilge water can't get to tank and tank is 100 percent supported by foam-padded wood. but 56 gallons is about 280 to 300 lbs of fuel. only about 60 lbs on each support point with less than a foot unsupported between each. i don't think that is enough area for flexing to cause metal fatigue. use cedar. stands up to water better than anything but teak or mahogany. tab the boards down to hull. i don't think glassing them in fully is necessary. make sure water drains past everything. if floor above tank is not a hatch which can be removed, make it so now.
dereknkathy is offline  
Old 02-12-2012, 12:08 PM
  #3  
Registered
 
Join Date: Jan 2005
Location: Pasadena, MD
Posts: 3,504
Received 36 Likes on 11 Posts
Default

Or you could just foam it in. Just use the right foam.
f_inscreenname is offline  
Old 02-12-2012, 01:41 PM
  #4  
Charter Member # 55
Charter Member
 
Griff's Avatar
 
Join Date: Oct 2000
Location: Omaha/LOTO
Posts: 19,078
Received 1,361 Likes on 665 Posts
Default

Originally Posted by f_inscreenname View Post
Or you could just foam it in. Just use the right foam.
and run a piece of 1-1.5" PVC pipe under the center of the tank for water to drain through.
Griff is offline  
Old 02-12-2012, 02:34 PM
  #5  
Registered
 
Join Date: Feb 2012
Location: westville, NJ
Posts: 4,008
Likes: 0
Received 2 Likes on 2 Posts
Default

no foam. traps water and rots out the tank. just because OEM people do it that way doesn't make it a good idea. they do it because it is cheap and quick.
dereknkathy is offline  

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


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell or Share My Personal Information

Copyright © 2023 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.