quick sizing question for Specialized bike

chatlow Posts: 845
edited March 2014 in Road general
Can anyone help me figure out if the bike I'm keen on is a medium 54? He said the c-c measurement is 19 inches?


  • imposter2.0
    imposter2.0 Posts: 12,028
    c-c of what? Geometry info will be on the Specialized site anyway...
  • chatlow
    chatlow Posts: 845
    Centre to centre of seat tube. Site shows sizes for centre to top.
  • Bobbinogs
    Bobbinogs Posts: 4,841
    Blimey, you don't make it easy! As above, the Spesh website has a really good set of geometry tables but make sure you pick the model (you may have use some old tables for earlier years, SL3, etc.) and work it out. Spesh work in cms and are compact design, so traditional ways of measuring size do not work, e.g., a size 54 should be a 54cm seattube from c-c bb to c-c tt, but my Allez Comp is no where near that.

    Failing that, see if the seller can see a sticker on the seattube with a big M on it :)
  • florerider
    florerider Posts: 1,112
    try looking under the BB - if it is an alloy frame it may be stamped there
  • florerider wrote:
    try looking under the BB - if it is an alloy frame it may be stamped there
    Careful with that. I have a 56 and it's stamped 58 underneath.

    I know it's a 56 as we checked every measurement to the geometry spec. Clearly a stamping error.
  • chatlow
    chatlow Posts: 845
    they gave me the following extra size info which seems way off what spesh website say for a medium...

    B-B (centre to top) is 560mm, the stem is 140mm, and the t-t mesurment is 656mm.

    Think they've measured overall length not centre to centre. Best go have a look.

    This is the bike:
    http://cgi.ebay.co.uk/ws/eBayISAPI.dll? ... TQ:GB:1123
  • chatlow
    chatlow Posts: 845
    Just noticed they added t-t length to advert and it's 565 not 656 which they emailed me. makes it a 56cm frame. Need 54, so nevermind.