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crank length issue?

  • 13-10-2009 9:25pm
    #1
    ullu
    Registered Users, Registered Users 2 Posts: 463 ✭✭


    I ordered a road bike online happy that the 54cm frame was the right fit having referred to the size guide.

    I had been riding a 56cm frame (I'm 5'9 with a 31 inch inseam) on which I felt a bit stretched. The 54cm bike arrived and instantly felt better but when the cranks (172.5mm) are parallel with the ground, it is possible for the front foot to be caught by the front wheel, albeit at a relatively drastic angle.

    Should you always have full clearance, if that makes sense, and would 170mm cranks (the size on my 56cm bike) sort it out?

    Thanks


Comments

  • #2
    niceonetom
    Registered Users, Registered Users 2 Posts: 4,833 ✭✭✭niceonetom


    Toe overlap is the norm for most smaller bikes (<56cm or so, though aggressive geo with produce toe overlap on quite big frames) and it is not a real problem. You never actually turn the bars that far while moving at anything but very, very low speed. Be slightly careful if you have to execute a very sharp turn at very low speed, otherwise you'll be fine.


  • #3
    Home:Ballyhoura
    Registered Users, Registered Users 2 Posts: 1,702 ✭✭✭Home:Ballyhoura


    No, this actually happens quite often on racing bikes. It depends on the frames size, geometries, foot size and cleat positioning etc but certainly is not a problem to worry about. It happens on my Orbea Orca too but when actually riding it you never turn the handlebars that much to ever notice it, only when you are absolutely crawling (and almost stopped) and try to go in as tight circles as you can...something which you rarely see sane cyclists doing! Believe me, don't worry about it - and don't go changing the crank length to sort it out. There really is no need to! Best of luck with the new bike anyway


  • #4
    sibyrne
    Registered Users, Registered Users 2 Posts: 77 ✭✭sibyrne


    Friend of mine level 4 cycle coach says crank lenght makes no difference. Overlap on a racer happens always.


  • #5
    rebel.ranter
    Registered Users, Registered Users 2 Posts: 3,570 ✭✭✭rebel.ranter


    I have a 58' frame with size 12 feet, noticed this issue myself. I asked a friend (regular poster here too as it happens) about it & he had the same explanantion as the linked article.
    Having racked up a few hundred kilometres with this "issue" I can comfortably say that is is not really an issue at all.
    Thanks for th elink to the article BTW.


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