Kart Chassis Setup PRO vs Rotax Utility+

This app using data about your current chassis setup, cold and hot tyre pressures, tyre temperatures, behaviour in corners, weather and race track conditions will give you some recommendations about how to adjust your chassis in order to resolve any set up problem which you have. For each advice, you'll find an explanation about the adjustment. Each explanation contains pictures to be more understandable The application is valid for all types of karts and for all karting classes (senior, cadet, junior). It's usefull for experienced or novice drivers. For experienced it'll be a second opinion about what's wrong with the chassis setup, and for novices it will teach them the secrets of the chassis adjustments and chassis setup The application contains four tabs, which are described next: • Chassis: on this tab, you can enter data on the configuration of your go-kart chassis, tires, location, weather, engine, gearbox, driver and ballast. For example: - front and rear height - front and rear width - front and rear hub length - front hub spacers - front and rear torsion bars - Toe In / Toe Out - Ackerman - Camber - Caster - front and rear bumpers state - rear axle stiffnes - rear bearings - sidepods state - 4th torsion bar - struts of seat - rain meister - seat type - seat size - seat position - tyre type - material of wheels - driver weight - ballast positions and weight - and more... • History: this tab contains the history of all your settings of go-cart chassis. If you something in your chassis setup or change the weather, race track, conditions - new settings data automatically will be saved in the history • Analysis: this tab contains three types of chassis behavior analysis - Driving analysis: you'll have to inform about how the driver feels the behaviour of the kart in corners. In section "Behaviour in corners" you'll have to enter information about what the driver is feeling of a go-kart chassis behavior (for example - understeering at entry of corners). These are the most important information used by the application to calculate the advices. You also should enter information about race track is clockwise or anti-clockwise, current weather and race-track conditions (automatic weather detection via the Internet is available). All elements are taking into consideration for calculations - Pressure analysis: you have to inform about the hot and cold pressures of each tyre, matherial of wheels (aluminium or magnesium), target tyre temperature, current weather and race-track conditions - Temperature analysis: you have to set in this screen the information about hot tyre temperatures in the inside, middle and outside of the patch of each tyre, matherial of wheels (aluminium or magnesium), target tyre temperature, current weather and race-track conditions - Temperature: you can set in this screen the information about hot tyre temperatures in the inside, middle and outside of the working surface Then click on the "Analysis" button and application will show you some recommendations related on which adjustments you can do to solve any problem in the chassis setup that you can be suffering. A screen with detailed information about the adjustment will be shown. For example: "Insrease front track width" or "Modify tyres pressures" (how much you should adjust your pressures) or change your driving style • Tools: on this tab, you can find useful karting utilities. Fuel calculator, for perfect fuel mixing. Weight and balance to get the perfect go-kart weight distribution. Air density and density altitude for carburetor setup (JETTING). And much more. The app let you use different measure units: ºC y ºF for temperatures, PSI and BAR for pressures, lb and kg for weights, millimeters and inches for length, mb, hPa, mmHg, inHg for atmospheric pressure, meters and foots for altitude, gallons, oz, ml and liters for volume.

Rotax Utility+ is the official mobile technical toolkit for Rotax karting. Designed for workshop, trackside and race-day use, the app brings Smart Jetting, Rotax E10 diagnostics and E10 scrutineering workflows together in one simple, efficient solution. Whether you are a driver, dealer, service center, scrutineer, race official or track operator, Rotax Utility+ helps you stay informed, make confident decisions and keep your focus where it belongs: on the track. SMART JETTING FOR ROTAX MAX ENGINES Stop guessing your carburetion setup. Smart Jetting calculates trusted main jet recommendations for Rotax MAX combustion engines based on current ambient conditions such as temperature and air pressure. • Use automatic weather input via your phone’s location or enter ambient parameters manually • Save jetting calculations together with weather data and personal notes • Build a reliable setup history to compare sessions and spot trends over time ROTAX E10 DIAGNOSTICS & ANALYTICS Turn your smartphone into a practical diagnostic dashboard for the Rotax E10 electric kart powertrain. Get a clear overview of key system information and track-relevant data directly in the paddock. • View general system information and current performance maps • Monitor Drive Unit status • Check battery State of Charge (SoC) and State of Health (SoH) • Read critical error codes and access actionable solution steps E10 SCRUTINEERING TOOLKIT Rotax Utility+ supports fast, precise and convenient technical inspections for professional race operations. The scrutineering feature is built to help officials verify compliance with confidence. • Read engine seal numbers, serial numbers and defined racing parameters • Receive alerts if irregularities are detected • Support paperless pre-race and post-race checks • Streamline official workflows using the required adapter cable and compatible dongle SIMPLE CONNECTION, CLEAR RESULTS Advanced E10 insights are easy to access with the right hardware. • Quick connection via Bluetooth • Easy-to-understand visual layouts • Clear, structured results you can trust Required hardware for E10 features: • Official Rotax diagnosis connector to OBD2 adapter cable, available through your local Rotax dealer • Compatible third-party OBD2 Bluetooth dongle Rotax Utility+ is a read-only solution. It allows users to view, verify and document information without flashing, programming or modifying any systems. It does not replace BUDS. The integrated Rotax Jetting functionality brings trusted jetting recommendations, diagnostics and scrutineering together in one mobile app. Rotax Utility+. Diagnosis and jetting. Mobile, simple, efficient.