Not [Albert]. He has a clockwork caliper design that he 3D printed. The STL is available for a few bucks, but you can see how it works in the video below. We don’t know how well it works ...

It might catch your attention with its unusual 3D-printed frame, but the Supertrata ... My bike had flat tyres, too, although there’s a tiny pump inside the toolbox pack, but it’s so small ...