| Year | 2006 |
| Date | 03-Feb |
| Volume | 196 |
| Issue | 4,266 |
| Page | 160 |
| Category | Stationary Engine |
| Part | 2 |
| Title | Designing a Hackworth Valve Engine |
| Author | Colin Pape |
| Notes | Concludes his analysis, describes his model engine. Designing the link for correct valve travel, building the model engine, engine frames, base and side frame |