A Stuart No.4 vertical engine, mounted on a base with a Lucas 12 volt dynamo. Paintwork scruffy but it goes like the clappers - using our patent high tensile elastic band drive belt, it comfortably produces 12 volts. There's a clip of it running on air in the workshop this morning here.
| length/inches | 31 |
| width/inches | 16 |
| height/inches | 28 |
| weight/kg | 8 |