Thread: Calculated BCD for TA chainrings/ is this right?
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Old 04-03-21 | 02:12 PM
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thumpism
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T/A outer is the only one that is a 5-bolt, and all the ones that connect to it, the middle and inner rings, do so using a 6-bolt pattern that is also in the large ring's spider. The 46T ring in your first photo is one of those middle/inner 6-bolt rings.
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