Originally Posted by
Chombi
Crank bolts should always be clockwise to tighten and counter-clockwise to remove. They are all just conventionally threaded bolts, not reversed threaded as the pedaling and crank rotation does not affect their tightness. If it is, I can't imagine why.....
Originally Posted by
eschlwc
^ the left (nds) bolt came out easily. that's why i'm surprised with this ds bolt.
i remember a bf post about something else crank related with reverse threading. just can't remember what it was. maybe i'm making it up.
Jobst Brandt had this to say:
Loss of crank bolt preload is greater on left than right cranks, because left cranks transmit torque and bending simultaneously while right cranks transmit these forces separately. The left crank transmits driving torque through the spindle to the right crank and chainwheel while the right crank drives the chainwheel directly.