From the Hack Bike Derby:
The Hack Bike Derby is an annual event held over 2 days with a different type of bike and series of races proposed for each year.
This year–the first year–the theme was klunkers; the original mountain bikes as raced from around 1976 in California, USA. All builders were given the same brief; builders must race the bike they have built and stock car rules apply (you have to be prepared to swap bikes for a race if another builder thinks you have an unfair advantage).
All bikes had to conform to the event rules:
– Frame and forks must be made by the rider from steel, specifically for this event.
– The bike must be made cheaply (under £300, all in)
– Dropouts must be made ("hacked") by the rider
– The bike mustn't be painted but it can be clear-coated, raw or painted using pens, paint brushes or rattle can by the rider
– All bikes must use the same tires
– The bikes must also be built according to this year’s brief; 1 x gear, 2 x brakes (1 x front + 1 x rear, no hydraulic or disk, ideally not V brakes), and the bike must look like a klunker.
Created by The Bicycle Academy, sponsored by Bell Helmets, Bontrager and Break Fluid Coffee.