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What frame size?


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Best method is to get yourself measured at a bike shop that offers the service. But a quick alternative, is to measure your inseam length (in socks and cycling shorts). Then multiply that measurement by 0.65 and you'll have the frame size of a conventional frame geometry (not a compact frame). You tend to have slightly wider scope with compact frame geometry ... the top tube length however, plays a critical role in the comfort stakes and they differ across manufacturers for the same frame size.

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Can only give opinion on a road bike - agreed with climate.


It's quite a story to get it exactly right because everyone who is 1.78m is slightly different in proportion. It's not only the inseam reach to the pedals but your arm reach and proportion within your legs that impact where the saddle should be and how high the stem should be. Go to a good bike shop!


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I'm 1.72 and recently bought a 17.5" mountain bike which is just right for me. Had to get a shorter (75mm) stem, but that was it.SeanGT2009-05-12 01:46:44

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