Cycling Equipment · Public discussion

bike sizes confused

Started by complience · · Last activity · 5 posts · 1,830 views

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Cycling Equipment
Published
19 May 2007
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20 May 2007
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complience
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  1. Im looking to buy a new mountain bike but im a little confused

    Im around 5'10 tall and ride a 55.8cm Felt Roadbike or 22"

    and ive been told that means i should be looking at a size 17" Mountain bike
    but all the bikes ive looked at seem to be using a different scale (40 to 58 cm i guess)

    im really confused, how much smaller or bigger should a mountain bike be compaired to a roadbike frame and why some places measure in Inches and others in CMs?

  2. MTBs are in inches, yes 17"-18" would be right for you.

    If in doubt, compare the (horizontal) top tube dimension, it will be just slightly longer than the road bike.

  3. Am i right in thinking a 17/18" frame is the same as a 45/46cm frame?

    and if that is right, should someone who rides a 56cm road bike frame, be riding a 46cm mountain bike frame?

    should a mountain bike frame be a whole 10cm smaller on average than a roadbike frame, basicly?

    gclark8 said:

    MTBs are in inches, yes 17"-18" would be right for you.

    If in doubt, compare the (horizontal) top tube dimension, it will be just slightly longer than the road bike.

  4. complience said:

    Am i right in thinking a 17/18" frame is the same as a 45/46cm frame?

    and if that is right, should someone who rides a 56cm road bike frame, be riding a 46cm mountain bike frame?

    should a mountain bike frame be a whole 10cm smaller on average than a roadbike frame, basicly?

    Read the mention about mountain bikes in section "B - Frame Size" here: http://www.coloradocyclist.com/bikefit/

  5. Scotty_Dog said:

    [font=verdana] For a mountain bike, we start by recommending a frame in the range of 10–12cm smaller than you take in a road frame. For example, if you ride a 55cm C-T road frame, look for a 43–45cm (17–18"😉 C-T mountain frame.[/font]

    cool thanks you've help me out alot.

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