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).
Diagram showing the results of Centre of Gravity tests for a Wraith III No. 2 engine crankcase.
| Identifier | ExFiles\Box 108\2\ scan0100 | |
| Date | 9th June 1938 guessed | |
| TRANSVERSE POSITION OF C.O.G. DRY .876" FROM ENGINE C L - TOWARDS NEAR SIDE. WET .753" DRY 17.467" WET 17.487" FRONT C L ENGINE FOOT C.O.G C L OF CRANKSHAFT C L OF ENGINE DRY 3.941" WET 4.267" DRY 6.217" WET 6.237" CENTRE OF GRAVITY TESTS ENGINE No WRAITH III No2 CRANKCASE - TOP HALF - WEIGHT { DRY 705 LB, WET 719 LB BL 2150 NB THE DIFFERENCE BETWEEN THE "WET" AND "DRY" WEIGHTS = WT. OF WATER REQUIRED TO FILL SYSTEM. | ||