On test the chassis was reluctant to run on air, most escaping past the pistons and/or valves.
The boiler looks to have had only a handful of steamings although, on hydraulic test exhibited copious leaks in the firebox.
| gauge | 3 1/2 inch |
| length/inches | 30 + 19 |
| width/inches | 11 |
| height/inches | 7 |
| weight/kg | 31 +11 |
| 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 |
| working pressure/psi | 80 |
| boiler type | locomotive |
| boiler material | copper |
| boiler construction | silver soldered with nutted & caulked firebox |
| superheater(s) | 4 |
| superheater type | flue tube |
| safety valve(s) | 2 |
| safety valve type | spring |
| mechanical pump | 1 |
| hand pump | 1 |
| washout plugs | yes |