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Noquay - Model Railway Inglenook Layout 4mm (OO)

Glossary of Railway & Model Railway Terms

G

  • Gangway - The space between the locomotive and the tender through which the crew enters and leaves.
  • Garden Railway - A form of model railway which is usually done outdoors. First started in Europe and now one of the fastest growing segments of model railways world wide. Most Garden railways are built on 1 Gauge track which is 45mm. between the rails. This segment of the hobby has become known as Large Scale because of the many scales involved.
  • Gas Turbine - A rotary internal combustion engine driven by expanding gases exerting force against vanes or similar structures mounted on a common shaft.
  • Gauge - The distance between the inside edges of the rail heads. Narrow gauge means rails with a width less than standard gauge.
  • Generator - A device that changes mechanical energy to electrical energy.
  • Goods - European term for general freight.
  • Gap - A space between the rails to insulate one rail from the other. Used to prevent a short in a reverse loop, or to devide the layout into seperate blocks or circuts for multiple train operation.
  • Governor - Device for maintaining a constant engine crankshaft speed over long periods during which the load on the engine may vary.
  • Grab Iron - The handhold on the side of cars.
  • Grade, Gradient - Slope to the horizontal, as a percentage, of rise or fall.
  • Grade Crossing - Where a street or highway crosses the railway. Also where two tracks cross each other.
  • Gravity Shunting - USA gravity or hump yard car sorting or train marshalling undertaken without the aid of a shunting locomotive or switcher.
  • Gravity Yard - A yard where gravity assists in the spotting and classifying of cars whereby they move along under their own momentum. Also called a Hump Yard.
  • Green Eye - Clear signal.
  • Ground Through - A mechanical device (usually done manually) which will change the position of a turnout, and simultaneously change the position of the signal mounted on top of the ground through.
  • Gypsum - Calcium sulfate used to make molding plaster, Hydrocal, and Plaster of paris. These products are commonly used in model railway scenery projects.