We saw quite a few wooden bicycles at NAHBS this year (here, here and here), plus some sweet wooden fenders and bags from Nisnas on Kickstarter. The most recent tree-sourced bike comes from Yojiro Oshima, a student at Tokyo’s Musashino Art University.
The pictures come from BicycleDesign.net, where you’ll find more of them (though we did do a little color correction on them here), and where Oshima commented that this is only a prototype and that the material is, well, immaterial…that it’s the shape that’s important. Then he added that wood would be the most comfortable.
This one’s construction uses hollowed out sections bonded together, much like Connor’s designs from NAHBS (middle link above). It’s unfinished, evidenced by the lack of brake levers and full cable routing, but still quite beautiful. Particularly the handlebars…
The curve at the top of the spokes is designed to absorb impacts and combines with the beam-style seat tube to improve overall comfort.