From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Valve timing diagrams for the Falcon X engine with different clearances.
| Identifier | ExFiles\Box 43\3\ Scan061 | |
| Date | 23th July 1926 | |
| 23/7/26 [Top Diagram] I.O. 20° E.C. 16° 264 Ex 248 In I.C. 48° E.O. 68° WITH .010 CLEARANCE [Bottom Diagram] I.O. 12° E.C. 8° I.C. 40° E.O. 60° WITH .013 CLEARANCE THE ABOVE ARE CRANKSHAFT ANGLES TIMING DIAGRAMS FOR FALCON X USING CAMSHAFTS E28336 & E28337 | ||