The speed channel plots your measured speed over distance. Read it beside recorded brake and throttle channels, the cumulative time gap, and your line on the map; speed alone cannot identify every rider input or explain why a difference occurred.

App screenshot: Corner detail with channels
In LapBrain
The corner detail view shows speed, throttle, and brake channels overlaid on the corner map with phase segments.

The speed channel

The speed channel shows your velocity through a corner or across a lap. It's the most fundamental telemetry view.

What to look for:

  • A consistent shape: compare the shape across several on-pace laps. A recurring feature is more useful than a one-lap wiggle.
  • Deceleration zone: note where speed starts falling and where it reaches its minimum. Use a recorded brake channel—not speed shape alone—to describe brake application or release.
  • V-shape vs. U-shape: a V-shaped corner reaches and leaves minimum speed over a shorter distance; a U-shape spends more distance near minimum speed. Neither is inherently better without the corner geometry, line, and time result.
  • Exit ramp: note where speed starts rising and how the two laps separate. Use a recorded throttle channel before describing throttle timing or firmness.
tip

When comparing laps, the vertical distance between two speed channels is a speed difference, not a time delta. Use cumulative time or the corner delta to see where the elapsed-time gap opened, then use the available channels and your line to describe what differed.

Comparing two laps

Choose two clean, on-pace laps that answer a question. A best lap can show something you already demonstrated, but it is not automatically a safe target. Where the two laps separate:

  • Before the corner: one lap began losing speed earlier; check the brake channel and cumulative time before calling it a braking difference.
  • Near minimum speed: one lap was slower there; compare line and corner geometry before assigning a cause.
  • On exit: one lap gained speed sooner or faster; check the throttle channel, line, and time gap before describing the input.

LapBrain's Turn phasesTurn phasesFive measurement regions used to locate where something happened in a corner: Entry, Decel, Maintenance, Accel, and Exit. help locate the difference, but the available channels determine which input claims the data can support.

What to do next

  1. Open a corner detail view and choose two clean, on-pace laps.
  2. Find where cumulative time changes, then inspect the speed, your line, and any recorded control channels in that range.
  3. Map the observation to a phase without inferring an input that was not recorded.
  4. Read Comparing Laps Effectively for how to use these observations across all corners.