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10

They are very similar but have to follow different certification rules. For example, under UCI regulations the saddle of a TT bike must be at least 5 cm behind a vertical line drawn through the bottom bracket (cf. Rules 1.3.011 to 1.3.025), there are constraints on the size, shape, and orientation of frame members, and so on. Triathlon bikes are certified ...


2

For Strava climbs there is an objective categorization that is length in meters time grade in percent, with this categories: score = length(m) * grade(%) Cat 3: score > 16000 Cat 2: score > 32000 Cat 1: score > 64000 Cat HC: score > 80000 For example Alpe d'Huez has a length of 13800m and average gradient of 8.1% (according to Wikipedia), giving a ...


-1

Agreed. Most non-elite amateurs cannot sustain rpms to use a 53x11 or even the 12 cog in a competitive ride/race. A 50x34 (or 36) w/terrain-suitable cog range makes better sense for more road riders than what is typically used. Many pro group training rides cruise 4-5 hour rides on their 53x17's at > 90 rpm. They don't live on those super-human gears the ...



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