DRAGY MOTO LAB

Use it here

Chainline gearing and the lab, in the browser. No app required.

Chainline gearingSprockets, chainline, speed, power, pulls. GPS timerLive speed and distance windows. Times labWeather and weight corrections. SparkIgnition timing estimate. WeatherAir density and corrections.

GARAGE & QUICK CALCULATORS

GarageYour bikes: pick the active one, edit or add.

Bike databaseAdd a listed bike. Edit bikeSpecs, sprockets, tire. Quick gearingSprockets and mph. Chain lengthLinks for new sprockets. Tire sizeDiameter and speedo. Roll-on pullsQuick time estimates. Power to weighthp/ton, lb/hp, W/kg. Dyno logPeak hp per setup.

PRO

Pro trial7 days, then $4.99/month.