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Di2 drops onto small front cog!

benalibenali Posts: 24
in Workshop
Twice its happened now on my cube c62. The di2 front cog suddenly drops onto the small ring. Under load when hill climbing the chain seems to suddenly jump onto the small front cog without me touching the shifter. It happened at exactly the same location on a route I take. The rear cog is close to the point where it will auto shift the front, but the thing is I haven't touched the shifter and bang suddenly the front drops down. Any ideas?

Posts

  • david37david37 Posts: 136
    it needs adjusting. If that doesnt work, look for worn or damaged teeth or a lightly out of true chain wheel. Check the chain has no stiff links and check it isnt stretched too much.
  • pblakeneypblakeney Posts: 11,005
    I suggested a while ago that one of the main benefits of electronic gearing would be auto shift. you are ahead of the curve. 😉
    The above may be fact, or fiction, I may be serious, I may be jesting.
    I am not sure. You have no chance.
    veronese68 wrote:
    PB is the most sensible person on here.
  • david37david37 Posts: 136
    pblakeney said:

    I suggested a while ago that one of the main benefits of electronic gearing would be auto shift. you are ahead of the curve. 😉

    :D:DB)
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