The engine runs on air after a fashion in reverse, not forwards.
It's evidently been steamed in the past and, at 80psi the boiler shows no sign of leaks - however the omission of six stays in the backhead deviates from the design (and put us off steaming it ourselves!).
Not a particularly difficult job to fit the missing stays, although the boiler will need to come off the frames to do it.
| gauge | 3 1/2 inch |
| length/inches | 31+19 |
| width/inches | 6 1/2 |
| height/inches | 10 1/2 |
| weight/kg | 27 1/2 |
| wheel material | cast iron |
| axlebox type | plain bearing |
| cylinder material | gunmetal |
| valve type | piston |
| valve gear | Walschaerts |
| reverser type | screw |
| lubricator type | mechanical |
| injector(s) | 1 |
| CE mark | n/a - non-commercial |
| working pressure/psi | 80 |
| boiler type | locomotive |
| boiler material | copper |
| boiler construction | silver soldered |
| superheater(s) | 4 |
| superheater type | flue tube |
| safety valve(s) | 2 |
| safety valve type | spring |
| mechanical pump | axle |
| hand pump | 1 |