Which Colnago: 50s or 52s

eladh7
eladh7 Posts: 9
edited July 2014 in Road buying advice
Hello everybody

I want to upgrade to a new bike, but I am debating between
what the best size is for me.
I think I'll buy the colnago cx-1 evo next week, but I don't know if the
50s is the best size for me over the 52s.
My current bike is the specialized allez 52cm with 53.7cm top tube,
130cm headtube and 48cm seat tube to top length.
I feel very crowded in those bike and I sit high with a 110mm raised stem.
Overall, the bike feel tiny and I get neck pain.

In my searching, I saw that the 50s cx-1 have the same top tube length(53.7) like my specialized,
but with 148cm headtube, Compared to the 52s cx-1 that with 55cm TT and 167cm headtube.
How the headtube length are affect the frame?
I am 173cm(5 ft 8.11) tall and with 81cm(2 ft 7.89) inseam.
What do you think is the best frame for me for maximum comfort?

Thank you so much :)

Comments

  • sloppyschleckonds
    sloppyschleckonds Posts: 8,019
    55cm TT will probably have you over-stretching, what is your ape?
    I'm sorry you don't believe in miracles
  • eladh7
    eladh7 Posts: 9
    What do you mean ape?

    If 55cm TT will be oversize so what should I go with.
  • mfin
    mfin Posts: 6,729
    52s is too big for someone 5ft 8.
  • sloppyschleckonds
    sloppyschleckonds Posts: 8,019
    eladh7 wrote:
    What do you mean ape?

    If 55cm TT will be oversize so what should I go with.

    Ape is arm span measurement relative to your height
    I'm sorry you don't believe in miracles
  • eladh7
    eladh7 Posts: 9
    My ape is = 5 ft 11
    It says I need the larger frame?

    Thank you guys.
  • giant_man
    giant_man Posts: 6,878
    mfin wrote:
    52s is too big for someone 5ft 8.
    No it isn't actually, it depends on limb dimensions, reach and stack.
  • sloppyschleckonds
    sloppyschleckonds Posts: 8,019
    eladh7 wrote:
    My ape is = 5 ft 11
    It says I need the larger frame?

    Thank you guys.

    Left turn Clyde.
    I'm sorry you don't believe in miracles
  • eladh7
    eladh7 Posts: 9
    You mean I need the 50s?

    I spend a lot of $$$$ and I'm afraid I will buy again too small frame.
    The other geometric parameters on the 50s cx-1 will affect the frame that I would feel more space an comfortable
    on the bike, compared to my 52cm specialized?
    I do not want to buy a new bike and feeling cramped.

    Thank you
  • cyclingfury
    cyclingfury Posts: 676
    Are you really going to buy a bike in a size based on random comments of complete strangers on this forum?
    Go to a bike shop and get yourself measured.
    ___________________________________________
    Titanium Bertoletti
  • giant_man
    giant_man Posts: 6,878
    cyclingfury wrote:
    Are you really going to buy a bike in a size based on random comments of complete strangers on this forum?
    Go to a bike shop and get yourself measured.

    +1
  • eladh7
    eladh7 Posts: 9
    giant man wrote:
    mfin wrote:
    52s is too big for someone 5ft 8.
    No it isn't actually, it depends on limb dimensions, reach and stack.

    How can I find the measures of the reach and stack on the cx-1?

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