Interesting article ...
How Weight Loss Improves Cycling Performance | Bicycling
By the Numbers: How Losing Weight Improves Cycling Performance
Cycling favors good power-to-weight ratios, but by how much? We calculated exactly how weight loss can boost your riding performance.
But how much does weight matter, exactly? We were curious, so we calculated the benefits for a few scenarios; it turns out that hauling even just a tiny bit less junk in your trunk can translate to performance increases.
For these scenarios, we’ve based our calculations on a 180-pound rider who can sustain 200 watts on climbs. You can do the calculations for yourself using BikeCalculator.com’s handy online calculator.
The article goes on to show what a difference a 5 pound, 10 pound, and 20 pound difference could make.