The single cabbed class 20 has long been an enthusiast and modellers favourite for its' steam era appearance, though in the 1980s, coupled nose-to-nose, a pair of 20s could often out-pull the 'new' 58s when it came to shifting power station coal trains!
Function list
- F0 Headlight/rearlight
- F1 Engine start/stop
- F2 Horn high-low
- F3 Horn low-high
- F4 Brake squeal
- F5 NOTCH up
- F6 NOTCH down
- F7 Return to IDLE
- F8 Thrash
- F9 Cold start override
- F10 Horn high two bursts
- F11 Door slam
- F12 Fan
- F13 Horn long high
- F14 Horn low two bursts
- F15 Primer
- F16 Slow flange squeal
- F17 Spirax valve
- F18 Horn low
- F19 Horn high
- F20 Wagons buffering
- F21 Wagons clanging
- F22 Coupling 1
- F23 Guard's whistle
- F24 Coupling 2
- F25 Aux (if used in locomotive)