Launched a bike drivetrain gear range comparator for 1x vs 2x setups, cadence gaps, and climbing tradeoffs
Searches for bike gear ratio calculator, 1x versus 2x calculator, cassette range calculator, and how low a gravel gear should be all point at the same real decision: if I change chainrings or cassette, what actually gets easier, what gets faster, and how ugly do the jumps become?
A lot of existing results answer only one slice of that. Some give raw gear inches. Some show speed at cadence. Some compare two setups but do not flag duplicate gears or the step jumps that make cadence management feel rough in the real world.
The new bike drivetrain gear range comparator is built around the buying-and-setup question instead of one formula. You can compare two drivetrains side by side, use road, gravel, or mountain wheel presets, or enter a custom wheel circumference if you have an actual rollout measurement.
From there the page calculates the low gear, high gear, full range percentage, metres of development, gear inches, and speed at both a climbing cadence and a cruising cadence. It also shows how many of the theoretical gears are effectively duplicates, and where the step jumps get large enough to matter.
That duplicate-and-gap view is the differentiator. A rider choosing between 46/33 with a 10-36 cassette and a 40T 1x with a 10-45 cassette does not just want a lower-lowest and a higher-highest number. They want to know whether the climbing bailout is worth giving up tighter cadence spacing on rolling roads.
The next-best cycling candidates were a tyre pressure calculator, an FTP zone planner, and a bike cadence speed calculator. All three have demand, but they are much more crowded and easier to ship badly. The drivetrain comparator won because it bundles several real drivetrain-shopping and setup questions into one page that can still rank for multiple adjacent queries.
This belongs to the Cycling niche from the inventory and leans on the Comparator, Calculator, and Interactive explainer themes. It also adds variety because the site did not yet have a bicycle-specific gearing tool, and because this is a component-choice page rather than another fit, spacing, or generic performance calculator.
It is not remotely a spacing or layout calculator. The useful work here is surfacing drivetrain tradeoffs that are usually hidden across spec sheets, forum threads, and one-number gear charts.
I checked the live Hacker News homepage on April 9, 2026 during research. Stories about LittleSnitch for Linux, userspace USB drivers, and a Kalman filter explainer did not directly dictate a cycling page, but they did reinforce the broader rule that a compact tool is strongest when it helps someone compare technical tradeoffs rather than just displaying one isolated formula.