A very organic approach to engineering, bamboo bicycles...
The back story, my Christmas present this year (from the current wife) was a two-day workshop building a bicycle, from bamboo! A pretty niche idea but I'd enjoyed making my fixie (click here for that tale) so much last year that Mrs Stuffy felt that I'd like this.
So I researched (well I googled 'bamboo bikes') various possible bikes and despite the obvious challenges, and the relatively small number of examples I decided to build a mountain bike, no real logic other than the amount of MTB bits I had lying around and a fortuitous, for them, marketing email from Chain reaction cycles offering a half price groupset. For the uninitiated that's the brakes, gears, pedals, cranks and chain, all designed to work together. A few late night drunken internet shopping sessions later and I had a bulging box of bits, saddle, handlebars, forks, wheels and tyres.
The workshop itself simply delivers (hopefully) the frame, 7 pieces of bamboo, custom designed to fit my bodily dimensions (normally a secret between myself and my tailor). These bamboo bits are bonded together with delightfully gloopy mix of hemp and epoxy resin to make a structurally sound bike frame capable (allegedly) of taking my not inconsiderable weight crashing down a hillside. Making it pretty and adding all the expensive metal and plastic to turn it from bits of wood into a rideable bike is phase two of the project.
Maybe it's James' laid back approach, maybe my choice of bike but it turned out to be a far more flexible and organic process than a classic engineering one, solving challenges and redesigning bits of the frame as the practicalities caused a series of minor compromises. 
The areas where the lengths of frame join are to be held together and reinforced by strips of hemp cloth saturated with epoxy resin, the basis of fibreglass. This layering and wrapping is similar to the process of making bikes and cars from carbon fibre, similar I think in the same way that TeamBreakfastBike working up an appetite on a Saturday morning is like Team Sky attacking the Tour de France.
The glooping, wrapping, slopping, sliding, slicing and taping was pretty much full-on all morning, but by late lunchtime we'd jointed all of our frames. We made a cursory attempt to lessen the amount of gum on clothes and skin and then strolled into the Arctic winds to a local Hipster hangout the Crate Brewery for some excellent pizza and engaging chat whilst the miracle of exothermic chemistry turned our squidgy matting into rock hard lumps of plastic and cloth ready to be sanded, smoothed, filled, sanded, filled, sanded, smoothed, polished, painted and lacquered.Labels: Alf Webb, bamboo, bamboo bike, bike, blog from the barn, blogfromthebarn, Chain Reaction cycles, CrateBrewery, fixie, Gloopy Sunday, Hackney Wick, hemp, mountain bike, MTB, oakwood barn, resin, Stuffy, Velodrome





1 Comments:
Look forward to seeing it out on the Common soon...
Post a Comment
<< Home