1:29 Radius Guidelines
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The following is a suggested guideline for minimum diameter curves for various models in 1:29 scale.
Diameter Versus Radius
The following are the minimum DIAMETER of a circle of track recommended for a given locomotive.
The RADIUS is half the diameter.
Recommended Curvature
These are recommendations by the manufacturer/importer. Sharp curves look toylike, and contribute to operational problems. Broad curves enhance the realism of a model.
Aristocraft and USA Trains
| Manufacturer | Locomotive | Diameter, Feet | Radius, Inches |
|---|---|---|---|
| Aristocraft | Lil Critter | 4 | 24 |
| Center Cab Diesel | |||
| Alco PA | |||
| 0-4-0 Rogers | |||
| U25B | 5 | 30 | |
| 2-8-0 Consolidation | |||
| 2-8-2 Mikado 8ft | 8 | 48 | |
| SD-45 8ft | |||
| USA Trains | NW-2 4f | 4 | 24 |
| F3-A 5ft | 5 | 30 | |
| GP9 | |||
| GP30 | |||
| GP38-2 | |||
| SD40-2 | 8 | 48 | |
| SD50 |