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Mark's frame details

It has a 45” wheelbase and the BB is directly over the front axle. The frame weighs only 4 pounds and the all-up weight is just over 22 pounds (or half the weight of the three speed 'bent that was his inspiration for this design!). He used high quality, thin wall tubing throughout, to save weight. He also used just half the spoke holes in the front wheel/rim (2 on and 2 off) and 24 of 36 holes in the rear wheel/rim (4 on and 2 off).