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Thread: bike size

  1. #1
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    bike size

    I'm looking at a medium specialized crossroads hybrid for a 60 year old man, ~230 pounds, ~31" inseam. With those measurements, is this about the right size?

    Going to the LBS is not an option, unfortunately.

    Geometry:
    Seat Tube Length, Center to Top 411mm
    Seat Tube Length, Center to Center 358.4mm
    Top Tube Length (Horizontal) 615mm
    Top Tube Length (Actual) 581mm
    Bottom Bracket Drop 73mm
    Bottom Bracket Height 272mm
    Chainstay Length 465mm
    Seat Tube Angle 69°
    Head Tube Angle 69.5°
    Rake 40mm
    Trail 86mm
    Front Center 629mm
    Wheel Base 1084mm
    Standover Height 749mm
    Head Tube Length 160mm

  2. #2
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    Try Competitivecyclist.com............

    Try Competitivecyclist.com they have a fit calculator that may help. You will need to take some measurements and input them, but it should give you a good idea of what size you need. Hope this helps.
    '07 Obrea Onix TDF Ultergra
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    bike size

    Actually it's a gift, and the person I'm gifting it to is in another country...

    Quote Originally Posted by SalminSam View Post
    Try Competitivecyclist.com they have a fit calculator that may help. You will need to take some measurements and input them, but it should give you a good idea of what size you need. Hope this helps.

  4. #4
    The Site Administrator: Currently at home recovering from a couple of strokes,please contact my assistnt admins for forum issues Tom Stormcrowe's Avatar
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    OK, what's his height? Torso length says a lot about what top tube, as does arm length. If he's average build and around 6', then he's a tad on the large size for that frame.
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    I'd say he's around 5'9" or so.. Don't know his arm length or torso length unfortunately, but his leg length is 31" or maybe a little less.

    Quote Originally Posted by Tom Stormcrowe View Post
    OK, what's his height? Torso length says a lot about what top tube, as does arm length. If he's average build and around 6', then he's a tad on the large size for that frame.

  6. #6
    The Site Administrator: Currently at home recovering from a couple of strokes,please contact my assistnt admins for forum issues Tom Stormcrowe's Avatar
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    OK, then it sounds like he's in the uper range of the frame size then, as an educated guess. It can be made to work, if necessary by using a longer or shorter stem and/or different stem angles.

    Quote Originally Posted by period3 View Post
    I'd say he's around 5'9" or so.. Don't know his arm length or torso length unfortunately, but his leg length is 31" or maybe a little less.
    on light duty due to illness; please contact my assistants for forum issues. They are Siu Blue Wind, or CbadRider or the other 3 star folk. I am currently at home recovering from a couple of strokes. I am making good progress, happily.


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  7. #7
    Vorsprung durch Technik epcolt's Avatar
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    I am 5'10" with a 32" inseam. I have a Crossroads Sport with a large frame. It was fitted at the LBS and it fits fine I could have gone with the XL frame, so I would think a large would work for your needs.
    epcolt
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    ok

    OK, thanks for your help (and Tom also). I think I'll let this ebay deal pass. (medium frame only)

    Quote Originally Posted by epcolt View Post
    I am 5'10" with a 32" inseam. I have a Crossroads Sport with a large frame. It was fitted at the LBS and it fits fine I could have gone with the XL frame, so I would think a large would work for your needs.

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    more measurements.

    Sorry to resurrect an old thread, but I asked him for some more measurements. He measured and confirmed his height as 5'9", and he has a 28" inseam (book-to-floor method).

    With such short legs, would a medium framesized crossroads be a good option after all? I'm not sure what else to look at - all the other hybrids i was considering (giant cypress, kona smoke, trek 7xxx, jamis commuter, giant sedona, etc.) look like they won't fit him well and give him adequate standover.

    The crossroads has a more aggressively sloped top tube and the medium size has 720 mm of standover (he has a 710mm inseam). I don't really know how to size these type of hybrids, but the top tube length is around 580mm or so which seems similar to my 19" Jamis Coda....

    Thanks everyone for your help so far...

  10. #10
    Vorsprung durch Technik epcolt's Avatar
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    I think the medium frame would work fine. The top tube slope makes it hard to really transfer sizes from style to style.
    epcolt
    WV Trailrider
    07 Specialized Crossroads Sport
    90's Specialized Allez
    85 Raleigh Sportif Touring

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