| Year | 1997 |
| Date | 25-Apr |
| Volume | 178 |
| Issue | 4,040 |
| Page | 501 |
| Category | Stationary Engine |
| Part | 2 |
| Title | Quayle 25-25 Double Acting Slide Valve Engine |
| Author | G.P.Quayle (New Zealand) |
| Notes | Building. Construction, crankcase, base plate, bearings, crankshaft, counterbalance weights, spoked flywheel, disc flywheel, columns |