7S-005-014 O Gauge Sentinel Y1/Y3 United Steel No 1 DCC Options:DCC Fitted 7S-018-BPC B4 O gauge spares

7S-018-BPC B4 O gauge spares pull out PCB - R

000 were completed by nationalization

MR Type 2a

21 PIN 6 Function decoders (21MTC/NEM 660/MTX interface Standard)

7S-005-014 O Gauge Sentinel Y1/Y3 United Steel No 1 DCC Options:DCC Fitted 7S-018-BPC B4 O gauge sparesThe 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