Ian A, 
I believe the S1 and QB geometry is the same; however the largest S1 
offered was a 62.

Regarding differences, the S1 was made in Taiwan, has a kickstand plate, 
and some (all?) came with cream accents.  I've not found anything 
definitive on the tubing used, but some say the QB's tubing was a tad 

My (used to be Ben's) S1 has 42mm Continental Contact Speed tires and would 
easily take a 44.


On Monday, March 5, 2018 at 9:58:24 PM UTC-5, Ian A wrote:
> Ted's post is somewhat enigmatic but raises an interesting question. Is a 
> QB better than a SO or vice versa and if so, in which ways?
> The QB/SO is something I constantly keep an eye open for as an all year 
> round commuter, which would mean studded tires in winter, so details about 
> tire clearance would be of particular interest.
> IanA

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