Posted on by tim

Road Frame Spec

  • Bottom bracket width – 68mm
  • Bottom bracket thread – BSA
  • 1 1/8″ Head tube – 34mm
  • Chain stays length – 405mm
  • Wheels – 700c
  • Rear dropout Spacing – 130mm
  • Front derailleur clamp 31.9mm
  • Both Down Tube and Top Tube butted
  • Horizontal top tube
  • Replaceable rear derailleur hanger
  • Seat post size – 27.2mm
 
Frame ST mm ST mm TT mm HT angle ST angle BB Drop HT mm Fork Rake
Size C-Top C-C C-C Degrees Degrees mm Length mm
48 520* 480 495 72.5 74.5 50 95* 40
50 540* 500 520 72.5 74.5 73 110* 45
52 560* 520 535 73 74 73 125* 45
54 580* 540 555 73 73 66 145* 45
56 600* 560 570 73 73 66 165* 45
58 620* 580 585 73 73 66 185* 45
60 640* 600 600 73 73 66 205* 45
  • Note: * indicates approximate dimensions that may be adjusted for manufacturing efficiencies
  • Frame size = distance from bottom bracket center to top tube top
  • 48 cm frame size built for 650C wheels

 
Frame DT mm ST TT mm HT BB CS mm SS mm
Size bi-oval mm oval mm mm oval&conical oval&conical
48 50×38 31.8×1.9 33 round 42×33.9 42 32×16-17×16 21×16-17×16
50 50×38 31.8×1.9 41×33 40×33.9 42 32×16-17×16 21×16-17×16
52 50×38 31.8×1.9 41×33 40×33.9 42 32×16-17×16 21×16-17×16
54 62×38 31.8×1.9 41×33 40×33.9 42 32×16-17×16 27×16-17×16
56 62×38 31.8×1.9 41×33 40×33.9 42 32×16-17×16 27×16-17×16
58 62×38 31.8×1.9 41×33 40×33.9 42 32×16-17×16 27×16-17×16
60 62×38 31.8×1.9 41×33 40×33.9 42 32×16-17×16 27×16-17×16
Frame weight weight Frame weight weight
Size grams lbs. Size grams lbs.
48 1050* 2.31* 56 1250* 2.75*
50 1100* 2.42* 58 1300* 2.86*
52 1150* 2.53* 60 1350* 2.97*
54 1200* 2.64* Note: * Approximate weight

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