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Chainset question compatibility question

  • 25-05-2012 8:22pm
    #1
    Duffman12
    Registered Users, Registered Users 2 Posts: 3 ✭


    Hi, I purchased a Trek Madone 3.1 last year and dislike the SRAM compact chainset, having traded in a bike with a 39/53 chainset and close ratio rear block.

    Now I want to change the chainset to a 53/39 but am having trouble understanding what options are out there. The frame takes a 86.5 press fit bottom bracket, so what will fit this? Is it the same as shimano hollow tech II?

    I was offered a raceface cadence from a friend however my local bike shop tells me this won't fit and I need to spend €180 on a 105 chainset (bit out of budget).

    Any steer on this would be appreciated!!!


Comments

  • #2
    ashleey
    Registered Users, Registered Users 2 Posts: 2,005 ✭✭✭ashleey


    The bottom brackets are not compatible. Are you sure that yours is not bb30?


  • #3
    clog
    Registered Users, Registered Users 2 Posts: 1,100 ✭✭✭clog


    Assuming that its the ratio's on the compact you dont like you could change the chainrings (110bcd) to 38-52 you wont get exactly the same ratio as a standard but its close


  • #4
    Duffman12
    Registered Users, Registered Users 2 Posts: 3 ✭Duffman12


    ashleey wrote: »
    The bottom brackets are not compatible. Are you sure that yours is not bb30?

    Definitely a bb86.5 according to the bike specs.


  • #5
    Duffman12
    Registered Users, Registered Users 2 Posts: 3 ✭Duffman12


    clog wrote: »
    Assuming that its the ratio's on the compact you dont like you could change the chainrings (110bcd) to 38-52 you wont get exactly the same ratio as a standard but its close

    Interested to hear that. no bikeshop has mentioned. One told me that compact chainsetsonly supper 34 50. Is it possible (assuming the chainrings are available I guess)


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