80+ How To Adjust Shimano Sora Rear Derailleur New. Heartsbio carbon road bikemore information heartsbio.com Unscrew the cable anchor bolt (located at the base of the derailleur). SHIMANO SORA RDR3500 9 SPEED REAR DERAILLEUR CYCLELANE.CC from cyclelane.cc Spacing between derailleur pulleys and cogs. The majority of road and mountain bike derailleurs require a gap between …