Old 02-06-19, 12:22 PM
Join Date: Aug 2008
Location: Happy Valley, Pennsylvania
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why would you want a lot of extra space under the DT? It could possibly look goofy. I suggest learing how to use a frame specific cad program. I use bikecad, and it's great. There is also rattlecad, which seems to be really nice too. So far the big advantage of bikecad is the number of pre-defined parts.

This will not really affect stiffness in a way that matters while riding. The top/down tube spacing can affect the stiffness against braking forces if it's too small. On a small frame, you want to avoid overlapping the top tube and down tube. Bikes like that have a higher failure rate from what I have seen.
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