Lionel FasTrack is a popular track system for O-gauge model railroading, introduced in 2003. It’s favored for its ease of assembly, realistic appearance, and versatility on various surfaces like carpet or hardwood. Below, I’ll explore the types of FasTrack, available curves, and layout tips based on available information and practical insights.

Types of Lionel FasTrack

FasTrack is a rigid, three-rail system designed for O-gauge trains, featuring a snap-together locking mechanism for secure connections and a realistic roadbed. It cannot be cut, so Lionel offers a variety of track pieces to meet different layout needs. Key types include:

1. Straight Tracks:

   • Available in lengths like 1 3/8", 1 3/4", 3”, 4 1/2", 5", and 10" (standard) and 36”
   • Terminal sections (included in starter sets) have pre-attached wires for power connection.
   • Grade crossings (10" with simulated road) and flashing highway signal, uncoupling track, insulated block sections or crossing gate sets (20" when assembled) are some of the special straight track sections that can be added.
   • Also available are special lighted 10” track sections (the track lights up as the train goes over it.

2. Curved Tracks:

   • Offered in multiple diameters (detailed below) for creating circles, loops, or turns.
   • Curves are measured by diameter (center rail to center rail), with the actual space needed slightly larger due to the roadbed. Since the diameter is measured from center rail to center rail, the actual space need for the track is larger. Generally is you add 4” to the curve, that should allow enough space for the track. Ex. O-36 track is 36” in diameter but will require 40” min to allow for the outside of the track to fit. Please keep in mind that the train may overhang the track , especially on curves, so allow for the type of train that will be running on the track.

• • Also available are special lighted curve track sections (the track lights up as the train goes over it. Only Available in 0-36 curves.

3. Switches:

3. • Available in O-31, O-36, O-48, O-60, and O-72 diameters, with manual or remote control options for O-31 and O-36. Switches 0-48, O-60, and O-72 diameters are offered in Remote/Command Control. There is also a 0-72 Wye Switch available.

4. Crossings:

3. • Available in 90°, 45°, and 22.5° angles to connect tracks. Ex. 90° is used for a figure 8 track layout.

1. • Useful for complex layouts like figure-8s or double loops.

5. Accessories and Specialty Tracks:

   • Terminal connectors under straight and curved sections allow accessory wiring (e.g., for signals or lights).
   • Examples include the 153IR controller for operating multiple accessories across tracks without insulated sections.

FasTrack Curve Sizes

FasTrack curves are designated by their diameter (O-xx, where xx is the diameter in inches). The diameter is measured from the center line of the track, and the actual space required is slightly larger due to the roadbed (add ~2" per side). Below are the available curve sizes, the number of pieces needed for a full circle, and their approximate space requirements:

• O-31: 8 pieces per circle, ~3 ft diameter (tightest curve, not ideal for larger locomotives).
• O-36: 8 pieces per circle, ~3.5 ft diameter (common in starter sets, suitable for smaller trains).
• O-48: 12 pieces per circle, ~4.5 ft diameter (uses 30° angles, less compatible with other curves)
• O-60: 16 pieces per circle, ~5.5 ft diameter (better for larger locomotives).
• O-72: 16 pieces per circle, ~6.5 ft diameter (recommended for scale-length cars and large engines).
• O-84: 32 pieces per circle, ~7.5 ft diameter (for very large layouts).
• O-96: 32 pieces per circle, ~8.5 ft diameter (largest curve, requires significant space).

Track and Power

There are several different types of transformers that work with Lionel Fastrack.

• Lionel Powerhouse 180- power only- you will need a separate control source (smart phone/device, Lionel Base3)
• Lionel GW-180 Transformer - control and power
• Lionel CW-80 Transformer - control and power
• Lionel ZW-L Transformer– control and power
• MTH ZW Transformer – control and power
• Base 3 – control only- you will need a separate power source

We have a great resource section comparing all these Lionel transformers and power sources

Considerations:

• Space is always the first consideration. We recommend using the larges curves possible for your space to allow for larger engines or longer cars that you may purchase in the future.
• Always Check your specific engines minimum curve. This will tell you the minimum curve that will allow that engine to run properly.

Layout Tips

Building a successful FasTrack layout requires planning for space, train size, and operational goals. Here are practical tips:

1. Plan for Space:

   • Measure your available space and account for the roadbed (add 4" to the diameter for full circles). For example, an O-72 circle needs ~6.5 ft + 4" = ~7 ft.
   • If space allows, use larger curves O-72 or larger for outer loops to run big locomotives and long passenger cars.

2. Choose Curves Wisely:

   • Use the largest curves possible for realism and compatibility with larger rolling stock. O-72 is ideal for most modern locomotives, while O-36 suits smaller or starter sets.

3. Incorporate Switches and Crossings:

   • Place switches after a straight section (tangent) rather than directly after curves to prevent derailments.
   • Use crossings (90°, 45°, or 22.5°) for figure-8 or double-loop layouts, ensuring angles align with your curves.

4. Power and Wiring:

   • Use terminal sections or attach power wires to the quick-disconnect terminals under any track piece. No lock-ons are needed.
   • For large layouts, add feeder wires every 10–15 connections to maintain consistent power, as more joints can cause voltage drops.
   • Wire accessories (e.g., signals, lights) to terminals under the track or use a 153IR controller for multi-accessory operation.

5. Layout Design Ideas:

   • Starter Layout: A simple oval with O-36 curves and 10" straights is great for beginners. This is the layout that comes with most Lionel starter sets. Expand with a figure-8 using a 90° crossing and a few more straights.
   • We have a page dedicated to Fastrack Layout design ideas that will list the Fastrack items needed and the space allocation. This is a great place to look at designs and get ideas or even purchase one of the FasTrack layouts.
   • Scenic Integration: Add trestles or elevated sections (e.g., MTH or Lionel sets) for visual interest, or add crossing gates.

6. Use Track Planning Tools:

   • Software like SCARM (free) helps visualize layouts and calculate track needs. It includes all FasTrack pieces for precise planning.

1. • Refer to Legacy Station's website for pre-designed FasTrack layouts or guides like “How Many Curves In A Circle?”

2. Test and Adjust:

   • Run your longest locomotives and cars through curves to check for derailments or excessive overhang. Some equipment (e.g., Atlas Zephyr passenger cars) requires O-72 minimum.