Front derailleur cage widths
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  1. #1
    RoadBikeReview Member
    Join Date
    Apr 2019

    Front derailleur cage widths

    Front derailleurs are sold as being for 'X speed' setups, assumedly because they use progressively narrower chains so work best with a matching width cage. When I bent the 8 speed that came on my bike I replaced it with an 11 while running a 9 speed chain on 8 speed crank/chainrings (I was planning on upgrading to 10 or 11 speed but changed my mind) and it works fine. I have no real reference as to whether it works well compared to a pricy Dura Ace but it's good enough.

    I'm posting this because yesterday I had to adjust it as there was an intermittent squeak which turned out to be the chain rubbing on the outside of the cage when in the small 3 sprockets at the back. I have a friction shifter so can trim but this made me wonder if I could trim less often if I had a wider cage?

    Any other disadvantages to using a 'too narrow' one would be interesting too.

  2. #2
    'brifter' is f'ing stupid
    Reputation: cxwrench's Avatar
    Join Date
    Nov 2004
    I guess...but it's one of those things I've never thought about. Ride the bike.

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