7S-005-014S Sentinel Y1/Y3 United Steel No 1 Steam Locomotive - DCC Sound Class-71 but featured an upgraded 567C

but featured an upgraded 567C prime mover and distinctive class lights

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and is fully compatible with the 009 Streamline track system

Background

The Global System for Mobile Communications-Railway (GSM-r) is a vital component of modern railway infrastructure

7S-005-014S Sentinel Y1/Y3 United Steel No 1 Steam Locomotive - DCC Sound Class-71 but featured an upgraded 567CThe Y1 Y3 sentinel was based on the road going lorry, utilising a similar centrally mounted steam tube boiler and chain drive system to the wheels. Whilst not having the greatest turn of speed (approximately 36mph top speed) these small locos proved capable of pulling a constant draw weight and were considered ideal for shunting in yards and providing motive power along smaller branch lines. These quirky little locos were used by all of the big four