Originally Posted by ghentcruisers
I'm having manufacturers quote it on a number of processes. We'll see what they come up with.
I have a friend who stamped his own tanks (for motorcycles) and I know tooling costs isn't cheap. You're looking at least 10K just for the die. Some friendly advice, if you do go with stamping them, make sure there is enough demand for the tanks so you at least break even. Hydroforming is another option but we never officially got a quote. I myself want to contribute to the motor bike community and explored a bunch of avenues for custom parts being made. And through what I've found, it's for the love for the hobby and not for the profit, which is fine by me.
If you need a few places that can build you tanks. Send me a PM.