7S-005-015 Sentinel Y1/Y3 Charringtons Brewery No 7 Steam Locomotive Large Prairie most at BR Derby

most at BR Derby

Vacuum braking and GWR ATC – This formed class 6700 and were used primarily for shunting and short trip freight work and as such weren’t equipped with screw couplings either

Built in 1902 with works number 780

numbered 8729-8748 and 8749-8800

using the route control module of the ECoS command station

7S-005-015 Sentinel Y1/Y3 Charringtons Brewery No 7 Steam Locomotive Large Prairie most at BR DerbyThe 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