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The problem is β56cm in common parlanceβ is pretty ambiguous. Can mean C-T, can mean real or virtual top tube, can be just a nominal value that doesnβt relate to an actual measurement on the frame.
Iβd expect βsquareβ to mean A1 and B are equal, but likewise it can just mean a traditional frame with a high-ish horizontal top tube.
grams
@ππ¨ππ‘
When a shop or manufacturer describes a frame size as being something "square" (or 54x54 for example) is that c-c measurements for both top and seat tube?
Is the 54x54 size in the attached chart really a 56cm frame in common parlance?