| Year | 1997 |
| Date | 18-Jul |
| Volume | 179 |
| Issue | 4,046 |
| Page | 96 |
| Category | Stationary Engine |
| Part | 5 |
| Title | Quayle 25-25 Double Acting Slide Valve Engine |
| Author | G.P.Quayle (New Zealand) |
| Notes | Eccentric, straps & rods, valve rod, valve & eccentric yokes, quadrant, valve, miscellaneous turned components, milled or hand made parts, trial assembly, final assembly, valve setting |