# purpl.app ## Pages ## Posts - [Track Grip Evolution: Reading Changing Conditions Through Your Data](https://purpl.app/blog/track-grip-evolution/): The track is never the same twice. What makes grip rise and fall across a race day, and how track... - [How to Get Into Kart Racing: The Complete Starter Guide](https://purpl.app/blog/how-to-get-into-kart-racing/): From first rental session to your first championship: the ladder, the real costs, and the honest odds, from a karting... - [Karting Telemetry Glossary: 75 Data Terms Every Driver Should Know](https://purpl.app/blog/karting-telemetry-glossary/): 75 karting data terms in plain words: channels, traces, delta time, tyre data and session jargon. A reference glossary from... - [The Racing Line in Karting, Explained With Telemetry](https://purpl.app/blog/racing-line-karting/): Out wide, apex, out wide is where the racing line starts, not where it ends. GPS lines, minimum speeds and... - [EGT in Karting: Using Exhaust Temperature Data to Jet Right](https://purpl.app/blog/kart-egt-guide/): EGT is the carburettor's thermometer. How to read kart exhaust temperature at the bottom and the top, the driving-style trap,... - [Kart Tire Pressure: Finding Your Optimum With Data](https://purpl.app/blog/kart-tire-pressure/): The manufacturer's pressure is a starting point, not a law. The window framing, the hot-day story that proves it, and... - [GPS Accuracy in Karting: How Much Can You Trust Your Data?](https://purpl.app/blog/gps-lap-timer-accuracy/): GPS gives braking points within metres and lap times within hundredths, then lies at hairpin speed. What 10Hz vs 25Hz... - [Karting Corner Types: How to Attack Hairpins, Sweepers and Chicanes](https://purpl.app/blog/karting-corner-types/): Every corner type wants a different attack. Hairpins, sweepers, chicanes, combinations and the cash-out corner, each with its data signature... - [Exporting Telemetry to CSV: Analyze Your Kart Data Anywhere](https://purpl.app/blog/export-telemetry-csv/): Your kart data doesn't have to live inside one program. How to export telemetry to CSV, what's inside the file,... - [Corner Exit Speed: Why It Matters More Than Apex Speed](https://purpl.app/blog/corner-exit-speed/): Exit speed compounds down the whole straight, but the usual advice for getting it is wrong. What exits are made... - [Mounting and Wiring a Kart Data Logger the Right Way](https://purpl.app/blog/kart-data-logger-installation/): A sloppy install makes confident fiction out of good sensors. Mounting, routing and wiring a kart data logger step by... - [Kart Setup Basics: A Data-First Primer](https://purpl.app/blog/kart-setup-basics/): The perfect setup doesn't exist; the window does. What each adjustment changes, how to test one thing at a time,... - [10 Data Analysis Mistakes Karting Drivers Keep Making](https://purpl.app/blog/data-analysis-mistakes-karting/): The logger isn't the problem. From stopwatch-mode to the excuses hat, ten data analysis mistakes I see in every paddock,... - [Kart Sensors Explained: RPM, Temperature, Speed and GPS](https://purpl.app/blog/kart-sensors-explained/): Every kart sensor explained in one place: what each one measures, the operating window it guards, and which ones matter... - [RPM Data in Karting: Reading the Trace for Gearing and Corner Speed](https://purpl.app/blog/kart-rpm-data/): Your RPM trace tells you when the gearing is wrong, where the engine bogs, and which corners you're driving badly.... - [Sector and Split Analysis: Breaking the Lap Into Pieces](https://purpl.app/blog/sector-analysis-karting/): Whole lap times hide where you're fast and slow. How I use sectors, splits and the theoretical best lap to... - [Braking Technique in Karting: A Data-Driven Guide](https://purpl.app/blog/karting-braking-technique/): Why entries win races, what deceleration efficiency means, and how to read your braking in the data. A world champion's... - [How to Run a Post-Session Debrief (Template Included)](https://purpl.app/blog/karting-debrief-template/): A 15-minute karting debrief that actually gets done between sessions: feelings first, one verdict, one change. With a printable template... - [How to Compare Two Laps: Overlay Analysis for Karting Drivers](https://purpl.app/blog/compare-laps-overlay-analysis/): Overlay analysis is the fastest way to find lap time in karting. How I pick a reference lap, read the... - [How to Read a Speed Trace (and Spot Time Left on Track)](https://purpl.app/blog/how-to-read-a-speed-trace/): A speed trace shows every corner as a valley, and every valley holds a verdict. How I read braking shape,... - [How to Measure (and Fix) Lap-to-Lap Consistency](https://purpl.app/blog/lap-consistency-karting/): Consistency over 20 laps is an index of how good a driver is. The numbers that measure it, what they... - [Delta Time: The Most Useful Trace Most Karting Drivers Ignore](https://purpl.app/blog/delta-time-telemetry/): Delta time shows exactly where a lap gains or loses against a reference, metre by metre. What the line means,... - [Kart Data Loggers Explained: What They Record and Why It Matters](https://purpl.app/blog/kart-data-loggers-explained/): What a kart data logger actually measures, what the money buys, and the honest buying logic from a world champion... - [How to Analyze Kart Racing Data: A Step-by-Step Guide](https://purpl.app/blog/how-to-analyze-kart-racing-data/): The 20-minute post-session routine I use with the drivers I coach: download, overlay, find the corner that's costing you, change... - [Lap Time Analysis: How to Find Exactly Where You're Losing Time](https://purpl.app/blog/lap-time-analysis/): Theoretical best laps, sector maths and the sum-of-deltas exercise I make my drivers do. A coach's method for finding lost... - [Karting Telemetry: The Complete Beginner's Guide](https://purpl.app/blog/karting-telemetry-guide/): I won a karting world title reading data most drivers ignore. What telemetry records, which trace to learn first, and... # # Detailed Content ## Pages ## Posts The track is never the same twice. What makes grip rise and fall across a race day, and how track grip evolution shows up in your own telemetry. From first rental session to your first championship: the ladder, the real costs, and the honest odds, from a karting world champion who climbed it. 75 karting data terms in plain words: channels, traces, delta time, tyre data and session jargon. A reference glossary from a karting world champion. Out wide, apex, out wide is where the racing line starts, not where it ends. GPS lines, minimum speeds and when to break the geometric rule. EGT is the carburettor's thermometer. How to read kart exhaust temperature at the bottom and the top, the driving-style trap, and the seize-risk drift. The manufacturer's pressure is a starting point, not a law. The window framing, the hot-day story that proves it, and the data method that finds your real number. GPS gives braking points within metres and lap times within hundredths, then lies at hairpin speed. What 10Hz vs 25Hz really buys, and when to trust the trace. Every corner type wants a different attack. Hairpins, sweepers, chicanes, combinations and the cash-out corner, each with its data signature and priority. Your kart data doesn't have to live inside one program. How to export telemetry to CSV, what's inside the file, and a free starter spreadsheet to paste into. Exit speed compounds down the whole straight, but the usual advice for getting it is wrong. What exits are made of, and why braking early isn't it. A sloppy install makes confident fiction out of good sensors. Mounting, routing and wiring a kart data logger step by step, plus the checks that catch bad data early. The perfect setup doesn't exist; the window does. What each adjustment changes, how to test one thing at a time, and how data settles setup arguments. The logger isn't the problem. From stopwatch-mode to the excuses hat, ten data analysis mistakes I see in every paddock, and the fix for each one. Every kart sensor explained in one place: what each one measures, the operating window it guards, and which ones matter at your level of racing. Your RPM trace tells you when the gearing is wrong, where the engine bogs, and which corners you're driving badly. How I read it, with examples. Whole lap times hide where you're fast and slow. How I use sectors, splits and the theoretical best lap to find exactly which pieces need work. Why entries win races, what deceleration efficiency means, and how to read your braking in the data. A world champion's guide to kart braking. A 15-minute karting debrief that actually gets done between sessions: feelings first, one verdict, one change. With a printable template to take trackside. Overlay analysis is the fastest way to find lap time in karting. How I pick a reference lap, read the delta, and steal tenths from faster teammates. A speed trace shows every corner as a valley, and every valley holds a verdict. How I read braking shape, minimum speed and exit slope in kart data. Consistency over 20 laps is an index of how good a driver is. The numbers that measure it, what they predict in races, and how to tighten yours. Delta time shows exactly where a lap gains or loses against a reference, metre by metre. What the line means, how to read it, and the math behind it. What a kart data logger actually measures, what the money buys, and the honest buying logic from a world champion who has used them all. The 20-minute post-session routine I use with the drivers I coach: download, overlay, find the corner that's costing you, change one thing. Theoretical best laps, sector maths and the sum-of-deltas exercise I make my drivers do. A coach's method for finding lost lap time. I won a karting world title reading data most drivers ignore. What telemetry records, which trace to learn first, and how to turn numbers into lap time.