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).
List of design items for the Wraith project and their current status.
| Identifier | ExFiles\Box 30\4\ Scan077 | |
| Date | 2nd November 1934 guessed | |
| ITEM. WRAITH - CONTINUED:- (6) DESIGN POSITION. Crankcase - crankshaft and bearings. In hand. Camshaft and tappet mechanism. In hand. Valve rocker geometry. In hand. Sectional arrangement of engine with ramp cyl.head. Completed. Ramp type cylinder head. Completed. | ||