I've got 52/39 and 12-25 on my geared bike (ultegra drive train), but I've been thinking about going to 14-25 to deal with winter. I find myself staying out of the lower (easier) gears, but I like having more consecutive cogs in the back.

Does anyone here change for winter? What do you ride normally?

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Not to insinuate that you're pulling a Lance.... I'm just saying the 1 tooth difference for a CX bike is minimal when you're riding a 12-25 or whatever. The ratio is 1:4.083 vs 1:4.167 on the high end and 1:1.96 vs 1:2 (49x12 50x12 49x25 50x25 respectively)

OR if you wanna talk inches . . . .50x12 is 112.5 49x12 is 110.2. 50x25 is 54inches and 49x25 is 52.9.... I'm assuming youre on a 700x32 tire and using 170mm cranks. And if I've finally understood gear inch, this means that you gain about 7" using 50x12 AND 3.4" for 50x25 per 1 pedal revolution.

Ok seriously. . . . . apparently I'm not only funny but I've just nerded out way beyond what I thought was possible. Wonders never cease: A 40 year old wins the olympics, I out-nerd myself ... I gotta calm down! I'm just gonna blame it on my evil brother Lore...... AH FUCK now I just referenced Star Trek. Gene Roddenbery SAVE ME!!!!!

AND since you're not changing a cassette there will be no change in the gaps between cogs i.e. 14-16 vs 14-15-16

ETC.

B said:
Tommie said:
ALBERTO'S!!!!

130BCD is pretty common and they have a decent selection of cross gear. I dunno about a 49 though. Just do 48 or grow a pair and do a 50

oooh that stings.

thanks I'll probaby pop in there ... havent' been for a while.
That was an impressive display amigo.

Isn't there an online gear inches things somewhere for us lesser nerds?
This will not only be my first winter to bike it is also my first winter in Chicago.

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