It runs beautifully on air in either direction at 20psi and will throttle down to a slow tickover - there's some video of it here.there's some video of it here.
| length/inches | 9 1/2 |
| width/inches | 5 |
| height/inches | 6 1/2 |
| bore x stroke/inches | 3/4 x 3/4 |
| cylinder material | cast iron |
| valve type | slide |
| valve gear | Stephensons |
| reverser type | pole |
| lubricator type | displacement |