SW (Sound Whistle)
Aboard USATC Class S160 No 6046. Gauge on left is steam chest pressure (showing 100 lb); on the right the duplex vacuum gauge. The loco is air-braked but, like a classic BR diesel, can operate vacuum-braked trains; the air brake gauges are out of sight beneath the front cab window.
US-style pull-out regulator with rachet by my forearm - the rounded shiny thing to the right is padding to stop you doing yourself a serious head injury. The two valves visible beneath my arm are the large and small ejectors respectively. Reverser wheel and scale visible beneath them.
The valve visible to next to the reverser wheel is for the steam sanders. Then two brake valves: straight air brake for loco only; beneath that the M8 air brake valve that applies to the train and the loco - as on a diesel, dropping the air in the train pipe drops the vac and applies the brakes on the coaches.
To the right of the picture, the fireman is adjusting the blower. Bottom right is the vacuum chamber-side release valve.
Chinnor & Princes Risborough Railway.
SW (Sound Whistle)
Aboard USATC Class S160 No 6046. Gauge on left is steam chest pressure (showing 100 lb); on the right the duplex vacuum gauge. The loco is air-braked but, like a classic BR diesel, can operate vacuum-braked trains; the air brake gauges are out of sight beneath the front cab window.
US-style pull-out regulator with rachet by my forearm - the rounded shiny thing to the right is padding to stop you doing yourself a serious head injury. The two valves visible beneath my arm are the large and small ejectors respectively. Reverser wheel and scale visible beneath them.
The valve visible to next to the reverser wheel is for the steam sanders. Then two brake valves: straight air brake for loco only; beneath that the M8 air brake valve that applies to the train and the loco - as on a diesel, dropping the air in the train pipe drops the vac and applies the brakes on the coaches.
To the right of the picture, the fireman is adjusting the blower. Bottom right is the vacuum chamber-side release valve.
Chinnor & Princes Risborough Railway.