Cervelo R3 sizing

grimpeur
grimpeur Posts: 230
edited July 2007 in Workshop
Anyone here around 183cm tall (6ft ) and ride a Cervelo R3?

What size of frame do you ride? I'm about to buy one and can't decide between either a 56cm or 58cm frame.

Hmmmmmmm,

Comments

  • bobtravers
    bobtravers Posts: 115
    Get the height of your crotch measured in a bike shop, that is the only way to check... It is the length of your legs that determine the size of your bike, not the "general height"!
  • the_jackalcp
    the_jackalcp Posts: 276
    i reckon you might find that you are in between. When spending that sort of cash, as I have just done on the same frame, it is definitely worth getting measured up first. You should be able to find a bike fitting jig at an LBS and they will tell you your exact measurements and you can then use this data to compare the geometry of the R3 so you get the right size.

    In case you are buying the frame only have a look at cyclexpress.co.uk. £1500 is a steal for the best frame availble on todays market
    https://www.bikeauthority.cc/
    IG - bikeauthority.cc
  • Bronzie
    Bronzie Posts: 4,927
    bobtravers wrote:
    Get the height of your crotch measured in a bike shop, that is the only way to check... It is the length of your legs that determine the size of your bike, not the "general height"!
    I would actually say that the top tube length is more important than the seat tube length - you don't want to be over-stretched or bunched up over the bars - if you get too small a frame you can correct with a long stem but it can affect handling by having too much weigth forwards. Altering the saddle height is a doddle by comparison.
    It's a Lifestyle! -+-+- Coggan Training Levels
  • bobtravers
    bobtravers Posts: 115
    Bronzie wrote:
    I would actually say that the top tube length is more important than the seat tube length - you don't want to be over-stretched or bunched up over the bars - if you get too small a frame you can correct with a long stem but it can affect handling by having too much weight forwards. Altering the saddle height is a doodle by comparison.

    Way less expensive to change stem than cranks!!! The only way to have a perfect bike is to have it measured and then weld or cast, especially if you are between two sizes, but too much expensive or nearly impossible with carbon bikes like the R3..Think about it!

    It depends if you search for a performance bike or a comfortable one (legs vs arms)
  • Bronzie
    Bronzie Posts: 4,927
    bobtravers wrote:
    Way less expensive to change stem than cranks!!!

    Bob, you've lost me completely - what has the crank length got to do with frame size?Cervelo only sell framesets in the UK, so what length cranks you fit is nothing to do with frame sizing.

    My point was that the saddle height can be changed by quite a bit on most bikes (unless you have a Look with a "seatmast"), but the top tube and stem combination needs to be within certain parameters.
    It's a Lifestyle! -+-+- Coggan Training Levels
  • grimpeur
    grimpeur Posts: 230
    I ended up ordering a 56cm frame which has a 56.5cm top-tube. my reasoning behind this was that I have quite long legs relative to my body and didn't want to be too stretched out, something that I notice on my winter bike which has a 58cm top-tube.

    I guess having a slightly smaller frame gives more scope for adjustment anyway.
  • bobtravers
    bobtravers Posts: 115
    Bronzie wrote:
    Cervelo only sell framesets in the UK, so what length cranks you fit is nothing to do with frame sizing

    Didn't know that, since i'm from Canada and the Cervélo shop is 500 km from me, I have access to complete bikes, not just framesets...

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