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  1. #1
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    Frame size advice - Cannondale Synapse 2014

    Hello,

    this is my first thread cause I need Yours advice about new 2014 Synapse fitting . I hesitate between 54 and 56 frame size. This will be my first road bike. I would like a bike which will allow me to make long trips without backache due to too low position but also be ready for 'more' aggresive position on shorter trips and this is why I am considering new Synapse.

    Unfortunatley I can't get any of this for test ride so I must decide without trying it... (yeah I know that it's not good..)

    I made body mesaurements with CC Body Fit Calculator and my measurements are like this:


    The Synapse frame geometry:


    Thanks for Yours advice

  2. #2
    7-speed doomsday prepper ThermionicScott's Avatar
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    Would you buy shoes online without knowing your shoe size?
    Quote Originally Posted by chandltp View Post
    There's no such thing as too far.. just lack of time
    RUSA #7498

  3. #3
    coprolite fietsbob's Avatar
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    Stick to buying Laptops online, buy bikes in shops.. in person,
    since you dont have a clue as to what size fits.

    no stand-over height listed, do you know your stand over maximum height. ?
    Last edited by fietsbob; 01-19-14 at 10:47 AM.

  4. #4
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    Just get the 54 because you can always size up/out, whereas sizing down/in is much more limited.

    What would you want with a big-assed frame, anyway?
    Chaad--'95 DeKerf Team SL, '02 Lemond Buenos Aires, '05 Novara Buzz, '73 Schwinn Collegiate, '06 Mountain Cycle Rumble, '09 Dahon Mariner D7, '12 Mercier Nano, '12 Breezer Venturi

  5. #5
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    Quote Originally Posted by ThermionicScott View Post
    Would you buy shoes online without knowing your shoe size?
    Yes, as always. But bike shoes costs 100$, bike 5000$

  6. #6
    7-speed doomsday prepper ThermionicScott's Avatar
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    Quote Originally Posted by nonamed View Post
    Yes, as always. But bike shoes costs 100$, bike 5000$
    I was hoping to use the stupidity of one to illustrate the stupidity of the other, but I guess that backfired.
    Quote Originally Posted by chandltp View Post
    There's no such thing as too far.. just lack of time
    RUSA #7498

  7. #7
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    Your torso/height proportions are almost average at 82/179*100= 45.8% and the average male is 46.5-47.5% so frame sizing should work for you. By these numbers it appears you are slightly long in the torso so the longer top tube may be the better option, but you will not know that unless you test ride the bikes. The Synapse line has slacker seat tube and head tube angles as well as head tube length, which may also push you in to the larger size. As others have stated, you really need to test ride both sizes as well as other manufacturer's to really get a feel for the size that fits you. The numbers do not tell the whole story because flexibility plays a big part in how stretched out is comfortable for you.

    Personally I prefer to fit the bike to my torso and as such I focus on top tube length to determine fit since I have disproportionately long legs. I aim to have my face over the head tube when on the hoods and a slight bend in my arms.

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