SRAM Doubletap shifter overhaul

SRAM Doubletap shifter overhaul. The technique illustrated in this video doesn t work with SRAM Red, since Red relies on weightsaving tricks such as providing left and right semicircular cogs exactly big enough to get the job done. Other tips: when dismantling, carefully note the position and orientation of the springs (one for every moving part) and the position of the steps on the drive cog relative to the position of the entry hole on the takeup reel for the shift cable when the unit is in the full