Took an old 27" Sears 3 speed and put some motocross handlebars on it some time in the late 70s. I later modified a sears "sting ray" copy into a bmx type with the fork from the 27" wheeled 3 speed and put it on the 20" with the motocross handlebars and knobbies front and rear for a trail rider.
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Cambodia bikes, Bridgestone SRAM 2 speed, 2012 Fuji Stratos...