Because if you put 26" wheels in a 700 frame you get a lower BB and the wheelbase is longer than necessary for the same amount of toe-space on the same cranks.
tl;dr it's sub-optimal.
@Emyr started
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Because if you put 26" wheels in a 700 frame you get a lower BB and the wheelbase is longer than necessary for the same amount of toe-space on the same cranks.
tl;dr it's sub-optimal.