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Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

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Old 06-14-09, 03:49 PM   #1
malsr
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Proper top-tube length

Just purchased a frame with a 58cm seat tube and a 59cm top tube . I'm 6 ft tall and am comfortable with the seat tube length of 58 . But how do I determine if the top tube length is right for me without building the bike up?
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Old 06-14-09, 04:03 PM   #2
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try the competitive cyclist fit calculator.
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Old 06-14-09, 04:08 PM   #3
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Compare the measurement to a current bike?
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Old 06-14-09, 04:29 PM   #4
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Wow, that fit calculator is awesome. Ok, so my top tube is about 1.5 to 2cm too long. Now what? Should I ditch the frame and look for a new one?? If I shorten up the stem to compensate for this what will be the result?

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Old 06-14-09, 04:52 PM   #5
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Wow, that fit calculator is awesome. Ok, so my top tube is about 1.5cm too long. Now what? Should I ditch the frame and look for a new one?? If I shorten up the stem to compensate for this what will be the result?
use the calculator as a guide. if you like the frame, two centimeters is close enough to build it up and give it a try unless you have reason to believe otherwise.
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Old 06-14-09, 06:17 PM   #6
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So the top tube is about 2cm too long. What are the ramifications of using a stem that is 2 cm shorter to compensate for this? Would this make the handling more twitchy?

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Old 06-14-09, 10:31 PM   #7
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So the top tube is about 2cm too long. What are the ramifications of using a stem that is 2 cm shorter to compensate for this? Would this make the handling more twitchy?
depending on your source, its preferable to not go under 70 or even 90mm, but see what works!
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Old 06-15-09, 01:49 AM   #8
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Shorter stem is my vote. If you don't like it, sell and rebuild!
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