Joined: Aug 2003
Posts: 3,520
Likes: 12
From: Colorado Springs, CO
Bikes: 1959 Bottecchia Milano-Sanremo (frame), 1966 Bottecchia Professional (frame), 1971 Bottecchia Professional (frame), 1973 Bottecchia Gran Turismo, 1974 Bottecchia Special, 1977 Bottecchia Special (frame), 1974 Peugeot UO-8
Who says a compact frame is stronger?
The marketing department of most every major bicycle manufacturer and damn near everyone over on the road forum
Seat post has no bearing on frame stiffness. It is an external part...
Now there we disagree - maybe the clamp on top of it is an external part but the post itself is there to allow you to fine tune the length of the seat tube which is part of the frame.
But think about what you are implying there - hypothetically if we could build a frame of some new design with some unobtanium new material such that it had absolutely zero flex but the seat post still flexed a great deal, you would ride that bike and still think it was flexy. You cannot separate the seat post from the frame outside of a laboratory.
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1959 Bottecchia Milano-Sanremo(frame), 1966 Bottecchia Professional (frame), 1971 Bottecchia Professional (frame),
1973 Bottecchia Gran Turismo, 1974 Bottecchia Special, 1977 Bottecchia Special (frame),
1974 Peugeot UO-8, 1988 Panasonic PT-3500, 2002 Bianchi Veloce, 2004 Bianchi Pista