frame size 54cm is equal to 18" or 20" ?

mane1034
mane1034 Posts: 36
edited May 2011 in MTB beginners
I am not used to cm frame size terms.

Could you please help me to work out what will be the size of 54cm fram size in inches; 18, 19 or 20 ?

Thanks
Ali

Comments

  • JDawg_1989
    JDawg_1989 Posts: 18
    As a rough guide....

    40cm = 16"
    45cm = 18"
    50-53cm = 20" or 21"

    Hope this helps
  • pugaltitude
    pugaltitude Posts: 191
    42cm is approx 16"
    46cm is approx 18"
    52cm is approx 21"
    So 54 will be 20"
  • pugaltitude
    pugaltitude Posts: 191
    pugaltitude wrote:
    42cm is approx 16"
    46cm is approx 18"
    52cm is approx 21"
    So 54 will be 20"
    Sorry I meant to type 21"
  • mane1034
    mane1034 Posts: 36
    thanks
  • Deputy Dawg
    Deputy Dawg Posts: 428
    Multiply the cm by 2.5 & you'll have the size in inches. 54 cm is 21.6 inch ;)
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  • concorde
    concorde Posts: 1,008
    Is this a clay class thread?!?! Surely we all know how to convert between inches and cms? And if not... there's a lot of converters on teh net or mobile phones etc?!

    8)
  • Fenred
    Fenred Posts: 428
    Concorde wrote:
    Is this a clay class thread?!?! Surely we all know how to convert between inches and cms? And if not... there's a lot of converters on teh net or mobile phones etc?!

    8)

    Not sure if this is "clay class" :?

    My view is the OP asked a genuine question quite well articulated...Unlike your response :roll:
  • supersonic
    supersonic Posts: 82,708
    The conversion of numbers is right: but means nothing really. Have a read of this:

    http://www.bikeradar.com/forum/viewtopic.php?t=12566711
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  • Fenred
    Fenred Posts: 428
    Post up your stats and the bike/frame you are considering and people will respond with their views/experiences.....
  • mane1034
    mane1034 Posts: 36
    I wanted to buy Giant Rapid 4 Hybrid Bike.

    My height is 5"10 and inseam 32". I worked out Giant Rapid 4 M/L frame size (53.5) should be fine for me.

    However, I was looking below chart on Evans website for hybrid bike. In inches this chart is suggesting 19 -20 while in CM 55 to 57. I am confused now.

    http://www.evanscycles.com/help/bike-sizing

    Hybrid bike sizing chart
    Rider Height Frame Size Suggested
    Feet and Inches Centimetres Inches Size Centimetres
    4' 10" - 5' 1" 147 - 155 13 - 14 XS 47 - 49
    5' 1" - 5' 5" 155 - 165 15 - 16 S 50 - 52
    5' 5" - 5' 9" 165 - 175 17 - 18 M 53 - 54
    5' 9" - 6' 0" 175 - 183 19 -20 L 55 - 57
    6' 0" - 6' 3" 183 - 191 21 - 22 XL 58 - 61
    6' 3" - 6' 6" 191 - 198 23 - 25 XXL 61 - 63
  • cooldad
    cooldad Posts: 32,599
    Just go and sit on one.
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  • supersonic
    supersonic Posts: 82,708
    Again, these charts and numbers on their own mean little and is hard to equate between brands.

    The seat tube measurement is ONE out of several, and even this is measured in different ways.

    As above, if you don't fully understand all the geometry, try the bike in question.
    GT ZASKAR CARBON TEAM

    VOODOO CANZO

    Come and see me at https://www.facebook.com/biketyke/
  • mtb crazy
    mtb crazy Posts: 245
    i agree with cool dad, just go and sit on one and if when you sit in the saddle youre on tip toes then its the right frame size and saddle height.
  • mane1034
    mane1034 Posts: 36
    Thans for all your help. I got M/L 53.5 CM frame Giant rapid 4. Very fast and light bike.

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