| Year | 1926 |
| Date | 15-Jul |
| Volume | 55 |
| Issue | 1,314 |
| Page | 51 |
| Category | Workshop Topics |
| Part | |
| Title | A Model 90 deg. Twin Petrol Engine. 1 1/2-in. Bore and Stroke |
| Author | R.F.Gordon |
| Notes | View of timing gear side, crankshaft, piston, cylinder head, cams, timing diagram, valve spring, near view showing cylinder head and carburettor, engine dissembled |