18 can the rear wheel of Boris frame use a bobbin?
Because the diameter of the shaft rod of the drum shaft is much thicker than that of the quick-release shaft, the quick-release wheel set installed on the frame of the drum shaft will cause too large clearance in the installation position and cannot be fixed. If the quick-release wheelset is to be installed on the barrel frame, it can be installed through the special quick-release wheelset conversion washer for the barrel frame.
From the material point of view, there is no essential difference between the current bucket shaft frame and the original frame. All kinds of metal frames or carbon fiber frames are still made of 4 130 or 3k2500. The difference is that the position of the end-mounted shaft has changed from a semi-closed open structure to an integrated fully closed structure, which is more stable and has better extra strength.