I understand SRAM road cranks have a Q factor around 145mm, and MTB is around 169mm. Is this only due to the change in spindle length, or are the crank arms a different shape?
are the crank arms a different shape?
Yes
@dbr started
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I understand SRAM road cranks have a Q factor around 145mm, and MTB is around 169mm. Is this only due to the change in spindle length, or are the crank arms a different shape?