Quote Originally Posted by ilima View Post
IMO, you probably need a bike with 650 wheels. Smaller bikes with 700c wheels are going to have steep seat tube angles (75-76 degrees), which will tend to put you in a more aggressive position that might not be comfortable.

A quick glance at the Trek & Specialized websites indicates they're not using 650 wheels in the small sizes. Felt is using 650 wheels on their small women's bike but for reasons inexplicable to me still have steep seat tube angles.

Not carbon, but the Merlin Camena (and Litespeed Bella) has a slacker seat tube angle and 650s on it's smallest sizes. You should at least ride one for comparison.

Wow, thanks for the tip on the merlin. I wish I knew about it when I was buying. Do you know of any carbon bikes with slack STAs in smaller sizes? I assumed I'd need to go custom for that. I ended up with terrys with 24" front wheels in order to get a 73 degree seat tube angle together with a shorter top tube (but 700c rear for 'normal' gearing). The problem I have with all the bikes these gals love, is the seat tube angles are so steep I can't get set up properly, my knee will be too far forward of the pedal axle even with a super laid back seatpost. And, BTW, wheel size does not dictate speed, its a combination of the wheel size and gearing. To see, go to sheldon browns site and plug in different wheels sizes and gear combinations. It will take virtually the SAME ENERGY to push the same gear ratio, but it will take a diff. gears to have the same gear ratio on bikes with different sized wheels. Its true that smaller wheels have slightly more rolling resistance, but its very slight and made up for by the closer drafting advantages. To me the only down side of smaller wheels is the reduced availablity of wheels/tires, and non-standardness of tubes and wheels, if you race. But the FIT advantages for smaller people are tremendous. And if you don't race, there are plenty of good wheel/tire options in both 24" and 650c, just not as many very high end ones as in 700c (I love the schwalbe stelvio, comes in all the odd sized, 20" for a bike friday, 24" for a terry or airnimall, 650c, etc., very high pressure and light, rolls real nice).