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Old 08-19-19, 01:22 PM
Classic, Vintage Mechanic
Join Date: Feb 2017
Location: Vancouver B.C. Canada
Posts: 55

Bikes: '65 Legnano Gran Primeo || '76 Holdsworth Mistral || '82 Specialized Stumpjumper

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The Open University posted a series of interesting bike related videos. This one on frame design (
) suggested that the main impetus behind the move to sloping top tubes is that one frame size can accommodate a much wider range of differently sized cyclists, so fewer sizes of any given model need to be produced. The ultimate purpose was to reduce production costs, which in the case of custom carbon-fiber would be several orders above astronomical - to the point of being impossible.
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