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| Title: | Bicycling | 
| Notice: | Bicycling for Fun | 
| Moderator: | JAMIN::WASSER | 
|  | 
| Created: | Mon Apr 14 1986 | 
| Last Modified: | Fri Jun 06 1997 | 
| Last Successful Update: | Fri Jun 06 1997 | 
| Number of topics: | 3214 | 
| Total number of notes: | 31946 | 
1920.0. "Cross Frame Size" by KAOFS::N_PIROLLO () Tue Apr 30 1991 10:53
    I'm a little confused about hybrid/cross bikes. I am in the midst
    of purchasing one, a Bianchi Foray, but am not quite sure about
    the frame size.
    I am 5'9", and have been looking at a 53cm frame. Problem is,
    should the frame size be based on a road bike size or a mountain
    bike frame size.
    If I stradle the top bar on the 53cm frame, I have ~ .75in. of
    clearance.
    Now, if the measuremnts correspond to a ATB frame size, this is way too
    big.
    So, I am now looking at a 51cm. frame size, but some folks say this is
    small for my height.
    
    My inseam length is ~32inches from crotch to bottom of shoe.
    
    
    Any help would be appreciated
    
    Norman
    
| T.R | Title | User | Personal Name
 | Date | Lines | 
|---|
| 1920.1 | MAYBE A TAD MINISCULE | WMOIS::C_GIROUARD |  | Tue Apr 30 1991 12:48 | 5 | 
|  |      A 53cm will be a little small for you. I'm 5'6" and Kit Fit
    out to a 53cm-54cm size road frame. So I suspect that it might
    be a tad too small...
    
      Chip
 | 
| 1920.2 |  | WUMBCK::FOX |  | Tue Apr 30 1991 12:59 | 5 | 
|  |     I thought the rule of thumb for frame sizes for MTB's was 3 inches
    smaller than your road bike, and for hybrids 1-2 inches smaller than
    your road bike.
    
    John
 | 
| 1920.3 | Depends on the bikes use. | WMOIS::N_FLYE |  | Tue Apr 30 1991 20:18 | 12 | 
|  |     
    Depends on what you are going to use the cross bike for.  If you are 
    going to use it for trail riding or cross event go with a frame closer
    to your MTB size.  If mostly asphalt or smooth dirt roads go a little
    smaller than your road bike size.  
      I use my cross bike for exploration days.  I pick an area on a map 
    and check it out.  This means terrain from asphalt to carrying the bike
    up a ledge.  I like a size 2" smaller than my road size.  
    
    						Norm
    
    
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