Sheldon Brown Gear Calculator
Sheldon Brown's Bicycle Gear Calculator With love and appreciation, I have slightly modified Mr. Brown's excellent gear calculator resource to be an 'inline' javascript page with options/defaults more aimed to road bikes with double and triple chainrings.The page defaults to have my current bike setup (compact double standard madone front ring; custom SRAM larger 10-gear rear cassette (ordered stock part that my bike store simply replaced the stock cassette with!) selected and charted below. You can click between my old bike (triple) and new bike (double) to see how similar my old and new bike ranges are!
Yay - a double that can climb so close to a triple!!)To start 'blank' clike -tracey Gear Calculator byWheel SizeCrank LengthGear unitsChainringsStock CassetteCustom CassetteHub.
Sheldon Brown Gear Ratio Calculator
Tom Kunicki has a calculator with specific features useful for fixed-gear and singlespeed riders: 'Rabbit, A Singlespeed and Fixed-gear Calculator' John Allen has pages giving exact, fractional ratios calculated from gear tooth counts: 'Drive ratios of bicycle hub gears' What's New; Sheldon Brown on Facebook; Site Feedback & Questions. About the gear calculator. Why should you specify which tire you're using? Typically, the wider a tire is, the taller it is above the rim. The predefined tire sizes above are derived from the Tire Radius column in the table at the bottom of Sheldon Brown's page about Gain Ratios.