Mainline Railworks HOn3 Loop with Inner Passing Track Starter Set
Mainline Railworks HOn3 Loop with Inner Passing Track Set This complete set creates a continuous loop with an inner passing siding—ideal for running two trains, staging, or simple operations on a compact HOn3 layout. Built around the popular 19″ radius geometry, the set uses Mainline Railworks Code 80 sectional track and includes a matching left- and right-hand switch pair that drop directly into the 19A curve footprint. What’s Included 22 × 19″ Radius Curve sections 1 × Left-Hand Switch 1 × Right-Hand Switch 4 × 9" Straight sections 1 × Power Feeder section + 3 9" Free Straight sections 🚂 Why This Matters A basic loop gets trains running, but adding an inner passing track immediately multiplies operational possibilities. You can hold one train while another runs, stage equipment, or practice switching without needing extra space. Using the same 19A geometry throughout keeps everything aligned and reliable. 🏔 Perfect For Compact tabletop and shelf layouts Beginner HOn3 starter systems Temporary or holiday setups Modular and expandable railroads Running two trains on a single continuous circuit Testing locomotives and rolling stock 🔧 Key Features Complete loop + inner passing siding configuration 19″ radius curves for smooth, reliable operation Left- and right-hand switches that are direct drop-in replacements for 19A curve sections Code 80 rail profile with joiners installed Includes dedicated power feeder section Three free straight sections added for extra value and flexibility Precision-matched sectional geometry for consistent alignment Fully compatible with the rest of the Mainline Railworks HOn3 system ⚙️ Compatibility Compatible with Mainline Railworks HOn3 sectional track systems Integrates with Mainline Railworks HO/HOn3 dual gauge track components Designed for use with HOn3 locomotives and rolling stock Compatible with legacy Blackstone ProTraxx HOn3 sectional track geometry Switches substitute perfectly into any layout designed for 19A curve sections Suitable for both temporary tabletop layouts and permanent installations ➕ Pairs Well With Additional Mainline Railworks HOn3 Straight Track Extra Curve sections for larger ovals Feeder Track sections HOn3 Wood Bumpers Future turnout expansions ⚠️ Builder Tip The left- and right-hand switches are engineered as direct replacements for 19A curve sections, so the overall footprint of the loop remains unchanged when you add the passing track. Place the power feeder on a straight section for easiest wiring access. 🛠 Production Note The track sections in this set are hand-assembled on demand. Please allow the standard 2–4 week lead time for production and shipment prep. Need a different radius, additional straights, or a custom configuration? Feel free to contact us!