Dapol O Gauge 7S-005-007 Sentinel Y1/Y3 NCB #14 Blue 'Maude' Scale_28mm higher boiler pressure and extension

higher boiler pressure and extension of the firebox to create a combustion chamber made them more efficient than the A3 as they consumed less coal and water- especially later on when they were also fitted with a Kylchap double chimney

The first milk tanks had four wheels

This miniature is supplied unpainted and requires assembly – we recommend using Citadel Plastic Glue and Citadel paints

pointing towards Porthmadog

Dapol O Gauge 7S-005-007 Sentinel Y1/Y3 NCB #14 Blue 'Maude' Scale_28mm higher boiler pressure and extensionDapol O Gauge 7S 005 007 Sentinel Y1 Y3 NCB #14 Blue 'Maude' The 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 most significant turn of speed (approximately 36mph top speed) these small locos proved capable of pulling a constant draw weight. They were considered ideal for shunting in yards and providing motive power along smaller