Grubby, it runs beautifully down to low speed on air, due in part to the heavy flywheel.
| length/inches | 7 |
| width/inches | 12 |
| height/inches | 17 |
| weight/kg | 13 |
| bore x stroke/inches | 1 (est) x 2 |
| cylinder material | gunmetal |
| valve type | slide |
| valve gear | single eccentric |