Guides
Short reads on gears, power and climbs, for people who ride and want to understand their data.
Gear development: metres per pedal revolution
How to calculate gear development in metres per pedal revolution, compare 50/34, 52/36 and 48/35 setups and pick chainrings and a cassette for your terrain.
What electronic shifting records in your ride files
What Shimano Di2 and SRAM AXS write into a FIT file and what the shift events reveal: time and power per gear, shifting habits, cross-chaining, cassette choice.
FTP and power zones: estimate, train, avoid traps
What FTP is, how to estimate it from ordinary rides as 95 % of your best 20 minutes, how to read the power curve and seven zones, and when estimates mislead.
Normalized Power, TSS and the fitness–fatigue chart
How Normalized Power, Intensity Factor and TSS are calculated, and how to read CTL, ATL and TSB to plan a build or a taper, with worked numbers and the limits.
How climbs are detected and categorised from a ride
How software finds climbs in an altitude profile, why distance times gradient gives categories 4 to HC, how races differ, and how to compare your VAM.
Why your ride altitude lies, and how to clean it
Barometric jumps after a stop, GPS altitude that invents 25 % ramps, and why two apps report different total ascent. Causes, fixes and how to get cleaner data.
FIT, TCX or GPX: which file to export, and how to get it
What FIT, TCX and GPX files keep (and lose), how to get your original files from a device, Garmin, Strava or Polar, which sync options exist, and a privacy tip.