| Year | 2019 |
| Date | 12-Apr |
| Volume | 222 |
| Issue | 4,610 |
| Page | 589 |
| Category | Stationary Engine |
| Part | |
| Title | The Mackworth Six Cylinder Rotary Engine |
| Author | Kevin Barry |
| Notes | Presents a compact stationary rotary engine. Twelve cylinder, six cylinder, main components, engine mounting, materials and manufacture, plans, costs, the engine block, boring the block, the crank shaft |