Prices subject to change without notice

Shay steam engine (Sound-DC/DCC) - LGB-20821


  • Model: AS-20821S
  • Weight: 20 LBS
This is the limited edition engine - but without the original wood-box and packaging
(4 weeks delivery time)

The Shay locomotive was the most  widely used geared steam locomotive. The locomotives were built to the patents of Ephraim Shay, who has been credited with the popularization of the concept of a geared steam locomotive. Although the design of Ephraim Shay's early locomotives differed from later ones, there is a clear line of development that joins all Shays.

Shay locomotives had regular fire-tube boilers offset to the left to provide space for a two or three cylinder "motor," mounted vertically on the right with longitudinal drive shafts extending fore and aft from the crankshaft at wheel axle height. These shafts had universal joints and square sliding prismatic joints to accommodate the swiveling trucks. Each axle was driven by a separate bevel gear, with no side rods.

The strength of these engines is that all wheels, including, in some engines, those under the tender, are driven so that all the weight develops tractive effort. A high ratio of piston strokes to wheel revolutions allowed them to run at partial slip, where a conventional rod engine would spin its drive wheels and burn rails, losing all traction.

Shay locomotives were often known as sidewinders or stemwinders for their side-mounted drive shafts. Most were built for use in the United States, but many were exported, to about thirty countries, either by Lima, or after they had reached the end of their usefulness in the US.

This Aster Shay Engine is a beautiful replica of this engine type and offers:
  • Full interior of the cab with correct armatures, hand wheels, and levers
  • Detailed boiler with domes, pipes, and handrails
  • Prototypical coloring and lettering
  • Full functional replica of the Shay drive mechanisms
  • 2 7-pol Buehler motors
  • 6 powered axles
  • 10 power pickups
  • Equiped with TrueSound DCC by ZIMO (Better than the original)
  • Chuff sysnchronized smoke
  • Many steam engines sounds in museums quality