Why on earth would you do that?
Because the man's a giant and wants a bike that fits?
I am no structural engineer but that could be done with a single non-bend toptube of the right dimensions I reckon
@BareNecessities started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Why on earth would you do that?