Purple Sector

Open MoTeC .ld and .ldx logs in your browser

Open a MoTeC .ld log with its .ldx beside it in your browser and compare laps corner by corner. Includes why a sim log can show no laps.

  • .ld
  • .ldx

By Purple Sector. Published and reviewed .

Open your own file See a sample debrief
MyChron 5Queensland Raceway National
A MyChron 5 session open in Purple Sector: the Queensland Raceway National map with its six turns and the gap at each, beside the list of laps.
Shown: a real MyChron 5 session at Queensland Raceway National. A file from any logger Purple Sector reads opens in the same view.

How do I get the session file from a MoTeC logger?

Bring: the .ld with the .ldx of the same name

On a computer

  1. Find the .ld and its .ldx: in i2’s Logged Data folder, or in your sim’s own MoTeC folder.
  2. Select both and open them here together (or put them in one .zip).

On a phone

  1. MoTeC logs are kept on a computer. Open this page there.
  2. Select the .ld and its .ldx and open them here together.

Watch out: Bring the .ldx too. A sim’s .ld on its own has no laps.

Vendor instructions: MoTeC i2

What else should I know about the file?

Limits to know
  • A sim (ACC, Assetto Corsa, rFactor 2) writes its laps only in the .ldx, so an .ld opened alone has none.
  • A log without GPS opens with its traces but no track map.
  • An i2 CSV export also works; do not edit it in Excel first.
Why does my sim log show no laps?

A sim (ACC, Assetto Corsa, rFactor 2) writes its laps only in the .ldx, so an .ld opened alone has none. Open the .ldx with it.

Does the log need GPS?

A log without GPS opens with its traces but no track map.

What do I see once the file opens?

Lap 6 picked against lap 1: the gap to lap 1 at every turn on the map, T3 the largest at +0.87 s.
The gap to your best at every turn.
The map closed on T3, marked +0.87 s, with both laps' lines through the corner.
The corner that cost time, with both lines.
The AI Coach card for T3, +0.87 s: “Turn in about 2 m wider into T3 and get back on the throttle about 3 m sooner out of it.”
One card for that corner, with its numbers.

See how to read the speed and time difference in a worked lap comparison at Norwell, using a public sample recording and its stated evidence limits.

How to compare laps · Circuit maps

Popular circuits: Mount Panorama · Phillip Island · Sydney Motorsport Park · The Bend Motorsport Park · Albert Park Grand Prix Circuit · Adelaide Street Circuit · Lakeside Park · Calder Park Raceway · all circuit maps.

Using a different logger?

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