Cruisers Forum
 


Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 07-07-2021, 13:33   #46
Registered User
 
Cheechako's Avatar

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 23,920
Re: new diesel fuel tank

Quote:
Originally Posted by Bill Seal View Post
This thread seems to have gotten becalmed in the Horse Latitudes, but I'll give it another try: The tank I'm having made will be about 20w x 15 long x 20 high. Most aluminum tanks appear to be 0.080" material, does this seem to be too thin, and would 0.125 be recommended?, or am I being OCD.
Personally I would want it thicker if it's an option, but many are made out of that thin stuff.
I forget all the comments above in this thread but where many tanks fail is the corner, or where they are sitting on a support! They stay damp there and corrode. use a material for the support (or on top of the current wood support etc) that doesnt stay damp. Starboard or etc would be good.
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is online now   Reply With Quote
Old 07-07-2021, 13:39   #47
Registered User

Join Date: Oct 2010
Location: The boat - New Bern, NC, USA; Us - Kingsport, TN, USA
Boat: 1988 Pacific Seacraft 34
Posts: 1,122
Re: new diesel fuel tank

My new 36.5 gal aluminum tank (post #4) made by Best Fab (bestfab.com) in Florida is 1/8" 5052 H32 aluminum with a coal tar epoxy finish.
wsmurdoch is offline   Reply With Quote
Old 07-07-2021, 13:54   #48
Registered User

Join Date: Sep 2012
Posts: 209
Re: new diesel fuel tank

Quote:
Originally Posted by Bill Seal View Post
This thread seems to have gotten becalmed in the Horse Latitudes, but I'll give it another try: The tank I'm having made will be about 20w x 15 long x 20 high. Most aluminum tanks appear to be 0.080" material, does this seem to be too thin, and would 0.125 be recommended?, or am I being OCD.

I made a 27 gallon fuel tank ( gas ) out of .125, 5052 aluminum. I had the tank quoted and they quoted it out of .100, 5052. But the cost difference between 0.100 and 0.125 was not significant. So I went with 0.125.
I wouldn't bother with 0.080. Its harder to weld and you have a lot less strength. It might be enough initially, but if you have any corrosion, you have a lot less margin.

0.125 might have been a slight overkill for a 27 gallon tank, but it should outlast me. My tank was quite flat since it lays under a center console deck.

Your tank is nearly square. So you will have big flat sides. I'd go with 0.125 on that tank and rest easy. If you are wondering, have them quote it with 0.100 vs 0.125. I'll be surprised if the difference is $50. For custom tanks, the cost is mostly labor (engineering, quoting, fabrication, etc). Aluminum isn't cheap, but labor and overhead is still more than 50% of the material costs. I think I had about $250 in materials with shipping. The tank that I was quoted was over $600 plus shipping.


Regarding corrosion. Make sure you don't have any dissimilar metals in contact with the tank. Also, I would sand, prime and paint the tank before installation.
Dave9111 is offline   Reply With Quote
Old 07-07-2021, 15:04   #49
Registered User

Join Date: Sep 2017
Location: Langley, WA
Boat: Nordic 44
Posts: 1,733
Re: new diesel fuel tank

Quote:
Originally Posted by Cheechako View Post
Personally I would want it thicker if it's an option, but many are made out of that thin stuff.
I forget all the comments above in this thread but where many tanks fail is the corner, or where they are sitting on a support! They stay damp there and corrode. use a material for the support (or on top of the current wood support etc) that doesnt stay damp. Starboard or etc would be good.
My aluminum tank has mounting brackets welded to the tank. The main body of the tank is not in contact with any surface. Someone was thinking when they designed it.
stormalong is offline   Reply With Quote
Reply

Tags
diesel, fuel, fuel tank

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Does diesel fuel return line have to be above fuel tank? er9 Engines and Propulsion Systems 31 01-06-2018 13:59
Water tank converted to fuel tank pjandart Monohull Sailboats 8 15-04-2013 17:35
Diesel Fuel Tank vs Portable Diesel Fuel Cell GaryMayo Engines and Propulsion Systems 11 13-11-2012 16:47
Fuel Tank to Water Tank jkleins Construction, Maintenance & Refit 8 23-06-2010 17:49

Advertise Here


All times are GMT -7. The time now is 09:59.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.