Reserve/second fuel tank

[jps]

Having just bought a very neat and tidy looking tank from a fellow builder I am already thinking of increasing range!

Has anyone used a 'second tank' setup - and if so - how has it been done? I seem to recall Phil (Talon) posted on here about the idea - but can't find the thread...?

I'm thinking that a second tank is preferrable to a larger tank as I would only use it for touring, and the empty tank was amazingly light...! I also like the idea of twin filler caps, like the old Minis :-D