Cyclocross And Road Bike Frame Measurements

Discussion in 'Cycling Equipment' started by kokamiguardz, Jun 29, 2015.

  1. kokamiguardz

    kokamiguardz New Member

    Joined:
    Jun 28, 2015
    Messages:
    11
    Likes Received:
    0
    Hi guys,

    Are the measurements the same when selecting a road bicycle vs. cyclocross? So if I ride 61cm frame road bike. Do I need the same for the cyclocross?
    I know the mountain bikes are totally different. Not sure about the cyclocross.

    Thanks
     
    Tags:


  2. thepieeatingjay

    thepieeatingjay New Member

    Joined:
    Feb 22, 2015
    Messages:
    150
    Likes Received:
    2
    if I'm not mistaken, you need to choose one size down on the CX frame
     
  3. oldbobcat

    oldbobcat Well-Known Member

    Joined:
    Aug 31, 2003
    Messages:
    3,233
    Likes Received:
    95
    Depends on the bikes and riders. Some cross bikes are relatively smaller for their nominal size, having shorter top tubes. This would be an indication to get the same size. Some road riders are on the largest frame that will accommodate them. These guys should size down for something more maneuverable and easier to mount and dismount. Also consider that most cross bikes are built with less bottom bracket drop, thus raising the standover.height.

    In cross you will want a shorter, slightly taller reach. If you're riding a 61 cm road bike and the stem is shorter than 12 cm, consider sizing down.
     
  4. tarverten

    tarverten New Member

    Joined:
    May 26, 2015
    Messages:
    154
    Likes Received:
    1
    No expert, but I think you can do about the same frame size as a road bike. The geometry of cyclocross bikes is just different to allow for the different riding style.
     
  5. blastguardgear

    blastguardgear New Member

    Joined:
    May 9, 2015
    Messages:
    155
    Likes Received:
    0
    Kinda depends on your body type and preferences. 'cross bikes have a higher BB (makes sense for clearance). So the 'same frame size' would tend to result in a taller standover clearance. Top tubes, though, tend to be a bit shorter on 'cross bikes of the 'same frame size'...which is more important to some.
     
  6. shadowsupernature

    shadowsupernature New Member

    Joined:
    Jun 10, 2015
    Messages:
    123
    Likes Received:
    1
    It depends on the cross bike. Look at the effective top tube rather than the frame "size." Also look at bottom bracket height. A cross bike with a higher bottom bracket (60mm bottom bracket drop, for example) would require sizing down; I have to size down for Ridley and Cannondale. Other cross bikes have a 70mm bb drop and basically fit the same way (all else equal) as a similar road bike (Focus, until recently used a 70mm drop but now is something like 65mm). Look at specific brands, and don't make general assumptions lumping all cross bikes together.
     
  7. Totalarmordestine

    Joined:
    May 9, 2015
    Messages:
    158
    Likes Received:
    7
    Bigger tires on the cross bike will create a taller standover height, plus, you'll want a little extra clearance in the top tube.

    You might also find yourself going with a stem that's 10mm shorter than you run on your roadie.
     
Loading...
Loading...