US CX Nationals 2013 Charles McDonald htfu interviews Charles McDonald's One-armed CX bike set up More watts/armkg than anyone. By dirtwire.tv on January 11th, 2013 at 8:29pm More from US National Championships 2013 : interviews Nicole Duke overcomes adversity to finish 3rd at CXnats interviews Elle Anderson 'You get thrown curveballs' interviews Tim Butler 3rd Masters 45-49 gregclimbs Bad ass. But his shop needs to be a bit more imaginative (or do more legwork!) As di2 would solve his issues as any shifter can shift any der. Use the left shifter for the rear, and add the “climbing” shifter to control the front – done. And run a parabox or vtwin with a cable splitter to go to hydro disk if he desires.