It runs well on air in either direction, feeling like it would do a serious job of work on steam - we could see this one in a large, narrow gauge vertical boiler locomotive!
Fitted with reversing gear and twin boiler feed pumps, The right hand pump moves, but feels tight when stationary - possibly an alignment issue which needs further investigation.
| length/inches | 14 |
| width/inches | 14 |
| height/inches | 22 |
| weight/kg | 49 |
| wheel material | cast iron |
| axlebox type | split bronze |
| cylinder material | cast iron |
| valve type | slide |
| valve gear | Stephensons |
| reverser type | pole |
| mechanical pump | 2 |