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The "PumpRack" is invented. What's the best way to get to the pump track? Of course, with the bike in the fresh air. Everyone knows it, gear ratio and geometry of a pumptrack bike are not ideal to overcome longer distances. Hansueli Spitznagel met with Stefan Lorenz in his frame building workshop with the idea for the "PumpRack" to bring it to life. A stainless steel Tubus Cosmo serves as the base. With stainless steel tubes we made the adjustments. The tubes were mitered and joined by brazing with silver solder and flux. As a towing vehicle serves an Orbea...