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Crash-resistant fuel tanks/fuel cells: Making 'em or finding a source

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Vigilant1

Well-Known Member
Supporting Member
Joined
Jan 24, 2011
Messages
10,663
Location
US
I'd be interested in any ideas for making/buying crash-resistant custom fuel tanks or fuel cells (i.e. a tank with a flexible bladder). I'd like to put them in the wing behind the spar, I like the idea of thick cross-linked HDPE or similarly tough, non-brittle material.

The auto-racing versions are nice, but tend to be rectangular. What I'd want is a wedge shaped tank approx 8" high (at the spar) and tapering to zero. 12"-15" wide with a length of 30"-35".

So, maybe it's possible to fabricate tough tanks like this in a home shop (ideas?). I'd guess rotamolding them would be very costly for a small run, due to tooling costs. I'm checking out marine supply places hoping a boating supply house makes tanks of approx the right shape.

Ideas and thoughts are solicited.
 
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