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  • 20.07.2010
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Bottom bracket width

A database of bottom bracket sizes for various bicycles. This is the horizontal width of the crankset from pedal mount to pedal mount. It is equal to the sum of. Apr 5, The two major dimensions that differentiate bottom brackets of similar types are the shell width and spindle diameter. Hopefully, we can help. Bottom Bracket standards chart for identifying current bicycle bottom bracket standards both the inner diameter and width of your frame's bottom bracket shell. Bottom Bracket Standards. Finding the correct bottom bracket for your frame can be challenging. To accurately determine the bottom bracket standard in your frame, it is best that you remove your crankset, and any installed bottom bracket cups or bearings. Then measure both the inner diameter and width of your frame's bottom bracket shell. Bottom brackets have several key size parameters: spindle length, shell width, and shell diameter. Shell width and spindle length [ edit ] There are a few standard shell widths (68, 70, 73, 83 or mm). BOTTOM BRACKET STANDARDS The term "industry standard" becomes more and more of an oxymoron as different manufacturer's further differentiate their products through proprietary technologies. In short, there's a mess of different sizes and shapes of bottom brackets out there. Here's a simple(r) guide to the current slew of bottom bracket "standards.".
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