Import your MoTeC files (.ld)

Prerequisites

• Software: MoTeC i2 (Windows/macOS) — optional, the .ld file is ready to use
• Compatible logger: MoTeC C125, C185, C187, L120, L130, GPS Module
• Output format: .ld
• Also compatible: some racing simulators (iRacing, Assetto Corsa, ACC) export in MoTeC .ld format

What is the LD format?

The .ld format is MoTeC’s native binary format. It contains all data recorded by the logger along with metadata (channel names, units, sample rate). It is a widely adopted format, including by racing simulators.

Step 1 — Locate the LD file

From a MoTeC logger

1. Connect the logger to your computer
2. Open MoTeC i2 (free for viewing)
3. Download the session — the .ld file is created in the project folder
4. You can also copy the file directly from the logger’s SD card

From a simulator

• iRacing: Documents\iRacing\telemetry\*.ld
• Assetto Corsa Competizione: Documents\Assetto Corsa Competizione\MoTeC\*.ld
• Assetto Corsa: requires the MoTeC plugin

Step 2 — Import into Brake Point

1. Log in to app.brakepoint.io
2. Click Import a session
3. Select your .ld file
4. Brake Point decodes the binary format and extracts available data

Extracted data

Data	Recognized channels
Speed	Ground Speed, GPS Speed
GPS position	GPS Latitude, GPS Longitude
Throttle	Throttle Pos
Braking	Brake Pos, Brake Pressure
Engine RPM	Engine RPM
Gear	Gear
Lap number	Lap

Limitations (experimental support)

This format is being validated. Notes:

• Variable channels: channel names depend on the logger configuration. If your channels have non-standard names, some data may not be recognized.
• Simulator data: simulator files are generally well-structured and work reliably.
• GPS: some MoTeC configurations don’t include a GPS module. Without GPS data, the track map and automatic lap detection won’t be available.

If you encounter an issue with an .ld file, contact us and attach the file — this helps us improve support.