Also a quick measure can be found here... http://bikecalculator.com
Enjoy On Tuesday, January 15, 2013 11:15:47 AM UTC-6, Jan Heine wrote: > > On Monday, January 14, 2013 2:58:13 PM UTC-5, Skenry wrote: >> >> >>> The only real way to compair weights is to have a frame built up with >>> normal duty "heavy" Riv-ish parts and then build it again with lighter >>> "racing" parts. Then you'd be able to notice a weight diffence. >>> Scott >>> >> > You don't need to go through that much effort. You can just add a water > bottle full of gravel to the lightweight bike. Compare it against a known > rider on a known bike, before and after. We've done that multiple times in > *Bicycle Quarterly's* bike tests, and the 4 pounds of gravel didn't make > any noticeable difference in the performance of the bike. > > When we first tested a bike made from "superlight" tubing, we were > surprised how much better than my Alex Singer it climbed. Switching bikes > back and forth, Mark and I found that whoever rode the "superlight" bike > was faster. To make sure it wasn't the weight difference (one was a racing > bike, the other a randonneur bike), we moved all the water bottles, food, > etc. to the "superlight" bike, stuffing the rider's jersey pockets until > the "superlight" bike was heavier than the Singer. The performance > difference remained. Whoever rode the heavy "superlight" bike still was > faster, and we switched back and forth multiple times. > > The test method of switching bikes between well-matched riders is useful, > because it accounts for environmental conditions (both ride side by side, > so have the same wind, temperature, etc.) and fatigue (both riders fatigue > at the same rate). This makes it easier to compare bikes than repeat runs > up a hill, where it's obvious that Run 10 will be slower than Run 2, > because the rider is getting tired. > > Jan Heine > Editor > Bicycle Quarterly > > Follow our blog at http://janheine.wordpress.com/ > > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/3hj0-o0eAasJ. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
