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Discussion Starter · #1 ·
Looking for a bike to just to keep at the office to ride at lunch. Found a size "M" Schwinn Fastback at a pawn shop and I ride a Specialized Roubaix 52 at home. (A 50 fits my legs but my torso is MUCH more comfy on a 52).

So, what size is a Schwinn "M" compared to a Spec Roub 52?

Schwinn specs:
TT - 546
ST - 480 (compact)
ST - 73.5*
HT - 72.5*
(full geo - http://www.schwinnbike.com/usa/eng/Products/Road/Road-Performance/Details/1226-S9FASTC-Fastback-Comp )

Roub specs:
TT - 537
ST - 485 (compact)
ST - 74*
HT - 72*
(full geo - http://www.specialized.com/bc/SBCBkModel.jsp?spid=39263&eid=117 )


Think it's "rideable" for 30-45min at lunch in street shoes and business casual a few times a week for $250? This is a size and somewhat price question too.
 

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With compact frames, you can almost ignore seat tube length. Go by top tube length. Since the Roubaix has a shorter top tube which you find "comfy", find a bike with a similar top tube length. The Schwinn ain't it, even for those casual rides. You'll eventually want to use the Schwinn for more than its original purpose, at which time you'll find out its shortcomings in fit.

Keep looking for a bike with a Roubaix-length top tube. Or buy the Schwinn and install a 1cm shorter stem.

Did I confuse you?!
 
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