Interesting Website

I'd been poking around into my old links page and came across a site that has some really good tools for the numbers oriented cyclists.

The site is called Analytic Cycling, and has tools for calculating just about any number you'd want to come up with in cycling. Things like determining the change in speed you would see if your weight (or that of you cycle) changed, how a change in power would affect speed and much more.

One use that is particularly valuable for me is the tool for figuring power given speed. As I have two bikes, one of which has a power meter and one that doesn't, it can be hard to figure out how hard I had worked on a particular ride. The tool on this site alone can get you part of the way, but it can be difficult to use if you don't know the gradient of the ride, which you probably don't unless you have a GPS cyclocomputer or something like the HAC4 which can track changes in elevation.

By riding the route on the bike with the power meter, you can use the tool to determine the gradient overall for the ride, and then use this value in the same too when riding the non-power meter equipped bike to determine how much average power it took to maintain that speed. You may need to change values for rolling resistance since the tires are different sizes and you might have a different riding position (between my road bike and my commuter bike there is a vast difference in position). This won't be 100% accurate but is certainly better than nothing.