Thread: bottom bracket and front deraillure
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Old 01-20-12 | 04:48 PM
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Bill Kapaun
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From: Mid Willamette Valley, Orygun

Bikes: 87 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds. 2019 Giant Explore E+3

Originally Posted by bentos
Hi,

I recently replaced the bottom bracket and chainset on my mountain bike. The old bottom bracket had a 122 square taper spindle, while the new one has a 118 octalink spindle.....
Ben
Different cranks can require very different spindle lengths, even with the same spindle interface!

I recently replaced a sq. taper crank on my old RockHopper.
Old crank took a 122 mm spindle, while the new crank took 113 mm spindle. Even the 113 was a mm or 2 longer than the original combination.
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