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[quote]QUOTE: Originally posted by whiterab Grades and curves are a nasty combination as both effect the resistance seen by your engine. You can take a lot more grade on a straight section than you can on a curve. While I haven't scientifically measured it, I get more drag on my 11' diameter curves than I do on a 2% straight. section. As the drag is additive, don't expect to make as much grade with a helix as you would be able to do with an equivalent length of straight. [/quote] [#ditto] Glen.
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