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Hi,
I am trying to find out if the splines failing on the crank arm spindle of the 5100 hollowtech is common?
I received a new bike from a main online seller. On my first ride less than 4miles into it, the splines failed I flew off the bike around 15-20mph and removed the skin from my right leg heel to hip including my knee. The right foot is black from bruising when the splines failed I was mid-stroke on the pedal. The seller is going to investigate, its either their lack of tightening bolts or Shimano's fault producing weak parts.
Posted : 22/04/2021 3:53 pm