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Want to buy 'cross bike for commuting, sizing questions.(3 posts)

Want to buy 'cross bike for commuting, sizing questions.Hacksaw
Apr 14, 2001 6:30 PM
I'm a regular MTB'er and want to buy something I can ride to work on. My Y bike isn't really setup for extended road rides and I'd like something that can handle a few km's of trails, so I figured a cross bike over a road bike. The problem is sizing. I know how to size for a MTB, but not for a cross bike. I'm 5'6" with a 29" inseam ( yeah, I'm short =). I can get a used Trek X0 55 cm, but I have no idea if that's a good size? I'd like some opinions and feedback from my short bretheren out there if possible. Thanks in advance.

re: Want to buy 'cross bike for commuting, sizing questions.psyclocrossed
Apr 15, 2001 5:41 AM
I am new to cyclocross, but I understand that for a cross bike you need at least several inches more of standover height than a road bike. I am 5-91\2 with a 32in inseam. I been sized at a 52, 54, or 55cm cross bike. I talked to the people at Kona they have a size chart, but it is geared to MTBs which appears to require more standover height than cross bikes. You might go with a 52cm or less.
sounds too big for youclimbo
Apr 16, 2001 6:48 AM
most 'cross bikes have a higher standover than a road bike once you get the bigger tires on them and sometimes a higher bottom bracket. Look at the SO height for the bike and then the TT length to see what fits you well. Some ride a 'cross bike as big as their road bike, other go a little smaller for the extra standover but if you go too small your top tube length will be too short also.

AS a VERY BASIC reference, I am 6' 0", 33" inseam, ride a 58 cm road bike, a 19" MTB and a 56 cm CX bike.