Welcome to L-Gauge

L-Gauge is an information resource for the LEGO® model train community. Our goal is to help support, promote, and educate fans and hobbyists interested in learning about and building model trains and layouts from LEGO® bricks. L-Gauge is not an official standard; however, there are a few recognized conventions and practices that have evolved over time in order ease collaboration among LEGO® train fans. The information contained in this site is the result of the collective knowledge, wisdom, and best practices from LEGO® train fans from around the world. Enjoy!

What is L-Gauge?

L-Gauge is an unofficial term used to describe the hobby of LEGO® System trains which use the common track gauge of 37.5 mm or 40 mm centre-line gauge (5 studs). See the chart below to see how L-Gauge compares to other popular model train scales:

Below you will find categories of information and resources to help you learn more about L-Gauge.

L-Gauge Standard

• Track Elements and Geometry
• Reference Track Configurations
• Suggested Loading Gauge
• Wheels
• Wheelbase Geometry
• Couplers

Layouts

• Modular Standards
• Tables

Resources

• CAD Tools
• Instructions

Electrical

• Metal/powered Track Reference
• Motors
• Powertrain Methods
• Lighting
• Accessories
• Advanced Topics

Future

• Track Components
• Wheels, Couplers, Accessories
• Control Systems

Media/About/PR

• About
• Logos and Branding
• FAQs

Links

• Other LEGO® train hobby sites
• Commercial Vendors

LEGO® is a trademark of the LEGO Group of companies which does not sponsor, authorize or endorse this site and its content.