Jetting for World Formula Kart 1.8

This application provides essential recommendations for optimizing carburetor configuration (jetting) and spark plug selection for karts equipped with Briggs & Stratton World Formula engines, utilizing a Walbro PZ 26 carburetor. It integrates various environmental parameters, including temperature, altitude, humidity, and atmospheric pressure, along with the user's engine configuration.

The app can automatically retrieve local temperature, pressure, and humidity data from the nearest weather station via the internet. For enhanced precision, an internal barometer on supported devices is utilized. The application can function without GPS, Wi-Fi, or internet connectivity, although users will need to manually input weather data in such instances.

• Main components provided for each carburetor configuration include: main jet, needle type, needle position, pilot jet, mixture screw position, spark plug type, spark plug gap, and float height.
• Fine-tuning capabilities for these values are available.
• A history log of all carburetor configurations is maintained.
• A graphical representation of fuel mix quality (Air/Flow Ratio or Lambda) is included.
• Users can select fuel types, including various gasoline options and racing fuels like VP C12 and VP 110.
• The fuel/oil ratio is adjustable.
• A mix wizard assists users in determining optimal mix ratios (fuel calculator).
• The application includes a warning feature for carburetor icing.
• Users have the option to utilize either automatic weather data or a portable weather station.
• Manual location selection is available for those wishing to maintain location privacy; carburetor setups are adjusted accordingly.
• Measurement units are customizable: ºC or ºF for temperature, meters or feet for altitude, and various options for fuel and pressure units.

The application consists of four primary tabs:

• Results: This tab displays main jet, needle type, needle position, pilot jet, mixture screw position, spark plug type, spark plug gap, and float height. These parameters are calculated based on current weather conditions and engine specifications detailed in subsequent tabs. Additionally, users can fine-tune these values for specific engine requirements. Key performance metrics such as air density, density altitude, relative air density, SAE-dyno correction factor, station pressure, SAE-relative horsepower, volumetric oxygen content, and oxygen pressure are also presented. Users can share their settings with peers or mark configurations as favorites. Furthermore, this section features a graphical display of the calculated air-fuel ratio (Lambda).
• History: This tab records the history of all carburetor configurations that have been utilized.
• Engine: Users can input detailed information about their engine model and year, spark plug manufacturer, fuel type, and oil mix ratio on this page.
• Weather: Users can set current values for temperature, pressure, altitude, and humidity. This tab also facilitates GPS usage to acquire real-time position and altitude data while offering connectivity to an external weather service for immediate environmental conditions. Additionally, the app can access the built-in pressure sensor within compatible iPhones. Manual location selection is permitted here as well; carburetor configurations will adapt based on the selected geographic area.

If there are any questions regarding the app's usage or features, users are encouraged to reach out for assistance. All inquiries are addressed promptly as user feedback plays a crucial role in enhancing software functionality. The team behind this application comprises active users themselves.