The AcaVengo Gear Chart: best gear chart I’ve seen.

Use the Advanced Options to limit the chart to the chainrings and cogs on your pony; the chart shows the gear size (number of inches) for each [chainring ¤ cog] combo.  For the uninitiated, gear size is the number of inches you roll forward with every full revolution of the crank.

The extra cool feature is the MPH chart for a range of RPMs [cadence] for each gear selection you click.

If you’re pushing the [53 ¤ 11 ] at a cadence of 100, you’re moving 37.44 mph.  Damn.

Make it a favorite:  www.correal.net/gearcalc.htm