Quote:
Originally Posted by tdw
Omatako is in favour. O, you have the experience but if you don't mind would you expand on why you like them ?
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TDW, your reference to my "experience" makes me nervous - I'm not even close to being expert on
fuel tanks.
My preference for ali is really about weight:strength ratio and probably more importantly, a frivolous desire to have things neat and tidy. Ali tanks are lighter even with quite thick material used and the tanks generally retain the squareness that was intended and fit easily into the tight spaces intended to house them.
My experience with stainless tanks is that the material gets real thin and is subject to a lot of distortion, especially if the tank is big (200 litres or more). By the time baffles and fittings are welded in, the box looks anything but regularly-shaped.
The tank shown above (Scott's) looks really nice but, with respect, it is very small and the top is already wavy from the welding heat and it doesn't appear to be baffled.
If the cavity you're using is uniformly constructed then HDPE is probably a good alternative but I would wager that they only come in standard sizes, without baffles and with standard fittings (size and location). They are also probably very expensive to customise and are not freely available in non-standard shapes. In my experience, most (or maybe all) of these type of tanks are roto-moulded and to make a mould for a one-off shape is not practicle. I've never researched these so this is just my own speculation. Don't plan your tanks based in this opinion.
"I think it would be a good idea"
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