7S-005-011D Sentinel Y1/Y3 British Railways (E) 8149 Steam Locomotive - DCC Fitted Class-73 the Corvette dominated the first

the Corvette dominated the first third of the race in the GTLM class at the Sebring circuit - and led the entire field for the first three hours

enabling them to carry everything from ballast to signal posts

Geared for slow prototypical operation

Concrete loading dock

Tunnel Portals are built at the entrances to tunnels

7S-005-011D Sentinel Y1/Y3 British Railways (E) 8149 Steam Locomotive - DCC Fitted Class-73 the Corvette dominated the firstThe 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