BICASE TANGO 2X4 first in the world 4 FOLD BIKE , is not a bunch of dagerous pieces together - MOST USEFUL SUITCASE BIKE EVER. 50 ltr + CARRYING CAP. No need to unload when folding.
Multiple possibilities building a bike "outside -in".
Benefits are: lighter and stronger than conventional pipe frame ( higher modulus of inertia of sections) Fork without efforts concentration. New transmision allows belt, and multiple gears .Chain guards, fenders, carryer , bateries box (electrically assisted model) are already built in.
5 COMPLETELY FLAT FACES.
You can take all your tools to the job, you are included - Lock the bike outside? carry your heavy tool case? you end up with your arms longer than a mokey´s.
FORGET about it , roll everything w/ you
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BICASE TANGO 2X4