Handlebar diameter
03-11-09, 05:09 PM
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Handlebar diameter
Are the diameter of handlebars different for drop road bars or just the clamp diameters different? THe 31.8mm clamp diameters alsways look thicker right where the stem attaches. Are they any thicker than 25.8 where you grab on the bars?
03-11-09, 05:33 PM
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I'm not sure if the diameter of the bend/drop portion of the bar is standardized, but it is at least similar so that shifters will be assured of fitting. The clamp area as you have noticed is where the distinction in sizing (diameter, not width, reach or depth) comes from.
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03-11-09, 05:40 PM
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I think 25.8 isn't an option. It's 31.8 or 26 or 25.4
I would think 31.8 is that thick all the way down, though I haven't used that size.
I would think 31.8 is that thick all the way down, though I haven't used that size.
03-11-09, 05:48 PM
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31.8 bars are not 31.8 their entire length. They are 31.8 where they attach to the stem, then slim down somewhere outboard from that. Shifter clamps wouldn't fit around a bar that was 31.8 at the bend.
03-11-09, 06:01 PM
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03-11-09, 06:20 PM
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there's 31.75, 26.4, 26, 25.8, 25.4mm clamp diameters, they all taper down to 24mm where you would put your bar tape and levers.
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