Jetting Vortex ROK GP Kart App Support

What is Jetting Vortex ROK GP Kart? Description of Jetting Vortex ROK GP Kart 3865 chars

This app provides, using temperature, altitude, humidity, atmospheric pressure and your engine configuration, a recommendation about optimal carburetor configuration (jetting) and spark plug to use for karting Vortex ROK engines (ROK MINI, ROK GP JUNIOR, ROK GP SENIOR), which use a Dellorto VHSH 30 and PHBG 18 carburetor.

This app can obtain automatically the position and altitude to get the temperature, pressure and humidity from the nearest weather station through the internet. Internal barometer is used on supported devices for better precision. Application can run without GPS, WiFi and internet, in this case the user has to enter weather data manually.

• Two different tuning modes: "By regulations" and "Freestyle"!
• In first mode, the following values are given: main jet, spark plug, spark plug gap, needle type and position (including intermediate positions with washer), air screw position, optimal water temperature, gear oil recommendation
• In second mode (Freestyle), the following values are given: main jet, spark plug, emulsion tube, needle, needle type and position (including intermediate positions with washer), throttle valve size, idle jet (outer pilot jet), idle emulsifier (inner pilot jet), air screw position
• Fine tuning for all these values
• History of all your carburetor configs
• Graphic display of fuel mix quality (Air/Flow Ratio or Lambda)
• Selectable fuel type (gasoline with or without ethanol, Racing fuels available, for example: VP C12, VP 110, VP MRX02, Sunoco)
• Adjustable fuel/oil ratio
• Adjustable floats height
• Mix wizard to get the perfect mix ratio (fuel calculator)
• Carburetor ice warning
• Possibility of use automatic weather data or a portable weather station
• If you don't want to share your location, you can manually select any place in the world, the carburetor setups will be adapted for this place
• let you use different measure units: ºC y ºF for temperatures, meter and feet for altitude, liters, ml, gallons, oz for fuel, and mb, hPa, mmHg, inHg for pressures

The application contains four tabs, which are described next:

• Results: In this tab two carburetor configs are shown ('By regulation' and 'Freestyle'). These data are calculated depending on the weather conditions and the engine and track configuration given in the next tabs.
Also this tab lets do a fine tuning adjustment for all values for each carburetor setup to adapt to the concrete engine.
Also the air density, density altitude, relative air density, SAE - dyno correction factor, station pressure, SAE- relative horsepower, volumetric content of oxygen, oxygen pressure are shown too.
You can also see in a graphic form the calculated ratio of air and fuel (lambda).

• History: This tab contains the history of all carburetor configs. This tab also contains your favorite carburetor configs.

• Engine: You can configure in this screen the information about the engine, that is, engine model, spark plug manufacturer, float type and height, fuel type, oil mix ratio and type of the track

• Weather: In this tab, you can set the values for current temperature, pressure, altitude and humidity. Also this tab allows to use the GPS to get the current position and altitude, and connect to an external service (you can choose one weather data source from several possible) to get the weather conditions of the nearest weather station (temperature, pressure and humidity). In addition, this application can work with a pressure sensor built into the iPhone. You can see if it is available on your device and turn it on or off. Also, on this tab, you can enable alerts about possible carburetor icing.


If you have any doubt about using this App, please, contact us. We answer every question, and we take care of all comments from our users to try to improve our software

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• Added Vortex ROK MINI engines (Cadet 9 with exhaust restrictor 16mm and Cadet 12) • Added new feature: get weather (temperature, pressure, humidity) via Bluetooth using weather stations: estrel DROP, Kestrel 5x00, WeatherFlow WEATHERmeter, Skywatch....