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The trend towards compact frames goes back to the early 90s and an Englishmen named Mike Burrows. Burrows helped design several time trial frames which featured a radically lowered (but not sloping) top tube and a very long seat post. During this time most time trial bikes had top tubes that sloped from the seat DOWN to the head tube (the opposite of what ...


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As someone who commutes with a CX bike and loves it, that bike shop employee is completely full of it. If he's seriously suggesting that you're going to corner better with a road bike in bad conditions than a CX bike he's a complete tool. What kind of tire you're using is the obvious consideration, not road vs. CX. Given that you can run wider tires with a ...


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Practically speaking? Assuming that the "virtual geometries of the bikes is similar (in other words if you measured the bikes as if there was a horizontal top tube), the big differences will have to do with fit. You have three choices: A standard frame with a horizontal top tube. A frame where the top tube hits that head tube at the same place a ...


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It impacts weight distribution which in turn can impact handling. It also impacts front center. Bike geometry is more complicated than people think. I hear people all the time say a frame with a 57cm top tube will have more reach than a frame with a 56cm top tube. This isn't necessarily true because of the seat tube angle. Team mechanics usually rely on a ...


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You might find the Geometry of Bike Handling on Calfee Design's site helpful. There are some good articles by Grant Petersen on bike making at the Rivendell site that cover some aspects of geometry and bike design. He also has a good section on geometry in his book Just Ride. Once upon a time there was a nice series of articles on the Rivendell site where ...


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For a 650B conversion, the length of the chainstay is mostly irrelevant, because a fat 650Bx42 tire has about the same outer diameter as a 700Cx25 racing tire -- so it's rare to have too short of chainstays for a 650b conversion. And most of the appeal of a 650b conversion is that you can get the handling and feel of a compact sporty bike with the softer ...



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