Jetting CR125 Shifter Kart
ISEnet
About this app
- Age 10
- Updated Oct 17, 2023
- OS IOS / Android
Editor reviews
A weather-aware jetting calculator built for Honda CR125 shifter karts. It analyzes temperature, humidity, and elevation to recommend safe, fast carburetor settings for trackside tuning. Core features include real‑time or manual weather input, precise jet recommendations for main, pilot, needle clip, and air screw, plus track profiles and setup history for quick reuse. Ideal for racers and mechanics who want consistent performance, engine protection, and data-driven decisions. Keywords: CR125 shifter kart, kart jetting calculator, 2-stroke carburetor tuning, weather-based jetting, air density, trackside tuning.
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How to use:
1. Download and open the app, then allow location for live weather or choose to enter temperature, humidity, and elevation manually.
2. Create a kart profile by selecting CR125, carb model, fuel type, and premix ratio to set your baseline.
3. Fetch or input current weather, then review the recommended main jet, pilot jet, needle clip position, and air screw starting point.
4. Install the suggested jets, warm up the engine, and do a short test session; note throttle response and adjust richer or leaner as needed.
5. Save the setup with track name and conditions, compare with previous sessions, and reuse it when similar weather returns.