Old 10-16-14, 01:48 PM
big john
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Most of the weight of a bike is in the parts and wheels, not the frame. A decent aluminum frame is about 3 pounds, steel about 4, and a higher end cf frame can be around 2 pounds, or even less.
So to go from an aluminum frame to a nice cf will only save you 1 pound.

As far as upgrading, some people just like to buy new stuff. Nothing wrong with buying whatever you want, whether it makes you go faster or not. Personally, I like to buy new bikes every so often, not to go faster, but because I like to buy new bikes. At 60 I'm probably not going to get any faster after 170,000 miles, or so.
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