Calculation tools for motorcycle preparation. The first tool estimates carburetor geometry and plots, as a curve, how each change of needle, jet, clip or venturi alters the fuel passage, so you tune with method instead of guesswork.
- App: https://app.afinados.io
- Site: https://afinados.io
- Docs: https://afinados.io/docs
Afinados models the free fuel-passage area of a Mikuni or Keihin carburetor across throttle position — including drop-in equivalents (NIBBI, KOSO, OKO and other clones that share the original geometry). Build a setup from the catalog (manufacturer, needle, needle jet, high/low jets, clip, shim and venturi), read the resulting curve, and overlay two setups to see, with a signed difference, where one flows more or less than the other before touching the engine.
It produces geometric estimates, not measured flow. It does not replace bench, dyno or track testing.
Phoenix LiveView (Elixir) and PostgreSQL. Charts are SVG rendered on the server, with no client-side charting library.
The local environment is provisioned with Docker Compose:
docker compose upThe app starts on http://localhost:4000. Run project commands (Mix tasks, tests)
inside the Compose services, and run mix precommit before committing.
Functional Source License 1.1, ALv2 future license. Copyright Eiseron.