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Chain rub on front meach is this normal ?

  • 04-05-2011 11:20pm
    #1
    tippx
    Registered Users Posts: 98 ✭✭


    I have a 52/39 and and 10 rings on the rear casette. Dura on the rear meach and ultegra chainset I know they intergrate, but I am having this problem all the time when I shift up to the 52 and then to the 10/9 and slightly on the 8th ring
    (So Im making the 10th ring pshyically the largest ring for agurments sake,and so on ) I get the chain rubbing on the inside of the front mech I use the 52 most of the time now and the chatter its driving me nuts the bike shop said this is normal and i should just gear down as the meach cannot accomadate the 2 extremes, ie 10 and 1 rear rings ? is this normal,

    please boardsies gimme your best


Comments

  • #2
    Raam
    Registered Users, Registered Users 2 Posts: 14,317 ✭✭✭✭Raam


    That is normal. Crossing the chain is best avoided.


  • #3
    Holyboy
    Registered Users, Registered Users 2 Posts: 869 ✭✭✭Holyboy


    What front mech and shifters are you using? It should be possible to adjust the front mech so the chain doesnt rub I only just finished doing it on a full Dura ace groupset! It will still make noise though as crossing over the gears isnt the best idea, itll wear your chain out much quicker than if you used your smaller ring, the left hand shifter should have some kind of trim to allow half shifts, it depends what shifter it is for instance Dura ace only has trim on the small ring.


  • #4
    tippx
    Registered Users Posts: 98 ✭✭tippx


    Yeah i get your drift ,sorry I m a newbie to boards I looked at some old threads about this (should have looked first I suppose) most people agree it cannot be helped and you can trim down on the fly witch helps a bit but its an issue, I agree it should not happen I can garantee that when you buy a bike they dont say..... by the way watch the chain rub on OUR mech ? when you gear up,you would think it could be resolved with all the tech available ,cancellera on a TT probably 55/ small ring 80km, chain rub ...............me bolloxs homies


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