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red paint marks the short butted side, therefore it shuld be cut (shortened) on the opposite side
reversing tube direction depends on the desired frame characteristics
not a common practice, but it's used sometimes. e.g. Hampsten Cycles uses this design for their MAX model frames
http://www.hampsten.com/portfolio/MAXinteresting thing is the MXL Merckxs bikes have proprietary designed lugsets and tubes that differ from standard MAX properties. including sets of lugs which are designed for opposite use of top tubes
of course it is, i was just wondering why?
columbus often marks directions of tubes like that, by painting specific endings
so if it's designed to be like that, i wonder what is the real difference in puting it backwards.
simple curiosity.
@guyfriday
stunning it is.