Scratch-built, it runs well on air with little sign of wear.
| length/inches | 8 |
| width/inches | 9 |
| height/inches | 9 |
| weight/kg | 3 |
| bore x stroke/inches | est 5/8 x 3/4 |
| wheel material | gunmetal flywheel, 4 inch diameter |
| cylinder material | gunmetal |
| valve type | slide |
| valve gear | single eccentric |