Gravel Bike by Carl

Gravel Bike by Carl

What made you decide to build a bamboo bike?

I'm an architect with a passion for using materials with low embodied energy, so I've had a long-standing interest in using bamboo as a building material, but never had the opportunity to do so. A bicycle frame seemed like the next best thing!

Carls Gravel Bike Bamboo Bicycle ClubBare bamboo frame all cut and shaped ready for gluing.

Did you enjoy building the bicycle from scratch and would you recommend the experience?

I really enjoyed the process of the build; shaping the bamboo, fixing the binds and finishing and detailing the frame. It was a novel experience that I would definitely recommend to others.

What did you find most difficult about your bike build?

Having a home build kit and not knowing enough about modern bicycle components! I came into the project with the building of the frame as the end goal rather than the means to a new bicycle, so I hadn't researched enough about suitable components for both the frame and what I wanted to achieve. That and the importance of making sure the bottom bracket is the right way round, a mistake that brought an end to the mark I.

Carls Gravel Bike Bamboo Bicycle ClubBeautiful shaped chain stay bamboo.

What was the easiest part of the build?

After the failure of the first frame I experimented with shaping spare bamboo tubes using a power file. It sped the process up for the mark II and I managed to get good contact point coverage between the tubes.

Carls Gravel Bike Bamboo Bicycle Club
Finished lugs in a raw form before sanding and finishing

How would you describe the ride of your finished bike?

Comfortable. The frame geometry and set up is intended for cyclocross but feels more suited for touring. This is probably because I took a belt and braces approach to the joints and made a heavy frame.

Carls Gravel Bike Bamboo Bicycle ClubSanded lugs ready for painting.

Carls Gravel Bike Bamboo Bicycle ClubTop Tube Lug

Carls Gravel Bike Bamboo Bicycle ClubSeat Tube

Carls Gravel Bike Bamboo Bicycle ClubDown Tube

What would you improve about the build experience or your finished bike?

I don't think I would change the build experience as it was enjoyable, even when it ended in failure. It feels like an iterative process, so I'll definitely make another frame in the future and build on the experiences of the previous frame. As for the finished bike, there is always room from improvement. The great thing about bamboo is that I can adapt and make changes to the frame with little fuss; I've had issues with various cable arrangements, so I intend to reposition the cable stops.

Carls Gravel Bike Bamboo Bicycle ClubFinished build

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