custom aluminum gas tank questions

bscappell

Petty Officer 2nd Class
Joined
Mar 29, 2010
Messages
132
Currently my boat has a 18 gallon stern tank mounted on the deck. well technically there is no tank in the boat but that was the design. to allow for more storage and maybe a little less weight in the stern i am going to have a belly tank made for my boat out of aluminum. the problem is i have a long, narrow and short space for it. i don't have the exact measurements but for a 19.5 gallon tank to fit the (est)5.25 height and (est)8.5 width it will need to be around 50 inches long.

here is my spot:



I am think of putting this in the top of the tank towards the bow with a plastic access panel.

http://s4d825548b500a.img.gostorego...6e5fb8d27136e95/o/i/oil_20cap_20bung_20sm.jpg

http://www.easternmarine.com/media/...78eab33525d08d6e5fb8d27136e95/2/8/2849_st.jpg

there is little clearance between the tank and the floor with current design. any other ideas?

yes I will ground the tank and I will allow airflow under the tank and a vent tube coming out of the very top of thank tank with a hose that has a loop in it.

i originally thought i could have the filler neck come out the middle so that it can have a continuous incline to the side of boat and up to the top of rail to a cap. but thinking about filling a tank with fluid, i don't think that will work right?

constructive advise and lessons from passed experiences would be great.....
 

GT1000000

Rear Admiral
Joined
Jul 13, 2011
Messages
4,916
Re: custom aluminum gas tank questions

Hi,
Sounds like you have a good plan...
The only other idea I can think of is to have two tanks built to fit the gunwales...
Not sure of the your space available, but two of these, one on each side...would give you over 32 gallons of capacity...where H1=8", L=36", W=18", H2=4" times two...

type_3.gif


This link will take you to this site's calculator for all different shape tanks...S P fabricates custom aluminum marine fuel tanks to exceed US Coast Guard specifications. Including gas, diesel, holding and water tanks. Marine equipment supplies including neoprene, adhesives and sending units.

Best of luck and Happy Boating,
GT1M
 

bscappell

Petty Officer 2nd Class
Joined
Mar 29, 2010
Messages
132
Re: custom aluminum gas tank questions

thanks for website link. that will be useful.

anyone else have opinion?
 
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