51 and 59cm frames with the same reach? 47cm taller stack than the 51cm? 55, 5…

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51 and 59cm frames with the same reach? 47cm taller stack than the 51cm? 55, 5…

51 and 59cm frames with the same reach? 47cm taller stack than the 51cm? 55, 57, and 59 are basically the same, just with progressively taller stack. There has to be a better way.