Rafik Kaissi (RK Concepts) has created a bike that blew my mind by the innovative concept of welding industrial chain for the backbone

Placed 10th in the international World Championship in 2009 at Sturgis, http://www.amdchampionship.com/content.php?page=registry§ion=viewbike&event=2009world&bikenumber=027

That copper antique fire extinguisher is the fuel tank... a photo at the end of this gallery shows what I'm talking about

at the middle of the steering, are these words

"God grant me the serenity to accept the things I cannot change,

the courage to change the things I can, and the wisdom to know the difference"

That seat is mounted to a piece of leaf spring... looped over one link, and under the one in front of it, in a half hook shape that allows it to be moved to different links to allow for riders of different length legs or arms. Genius!

The front suspension is a half leaf spring, and it is clamped with 3 U bolts, and this allows for longer front forks by sliding the leaf spring out equally on both sides of the front fork. Genius!

Holding the headlight assemble together with small bicycle size chain, really cool thematic continuation

A little difficult to see on this below photo is the brake fluid resevoir that is the top part of a grenade

Easier to see the grenade top in the below photo

In the above photo the small chain can be seen on both ends of the shifter and the end of the exhaust pipe

Notice a tiny piston used as a brake light

http://www.rkconcepts.com/ in Austin Texas, for info on Rafik, and his bike builds.