The silver soldered copper boiler is a commercially made job by Chambers, feed by injector and axle pump with auxiliary hand pump.
The engine has had recent hydraulic and steam tests with certification issued for same - it steams very freely and runs well, there's some video of it running outside the workshop here.
| gauge | 5 inch |
| length/inches | 33 1/2 |
| width/inches | 10 1/2 |
| height/inches | 14 |
| weight/kg | 51 |
| wheel material | cast iron |
| axlebox type | plain bearing |
| cylinder material | gunmetal |
| valve type | slide |
| valve gear | Walschaerts |
| reverser type | screw |
| lubricator type | mechanical |
| injector(s) | 1 |
| boiler number | RC74 |
| year built | 1972 |
| boiler maker | R Chambers |
| CE mark | n/a - pre-2002 |
| working pressure/psi | 100 |
| boiler type | locomotive |
| boiler material | copper |
| boiler construction | silver soldered |
| hydraulic test valid to | 26-Apr-2025 |
| steam test valid to | 17-Jul-2022 |
| superheater(s) | 1 |
| superheater type | flue tube |
| fusible plug | no |
| safety valve(s) | 2 |
| safety valve type | spring |
| mechanical pump | axle |
| hand pump | yes |
| whistle | yes |