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).
Graph showing Spectre frame distortion with pure torque applied at the front, comparing results with and without a dashboard.
| Identifier | ExFiles\Box 92\1\ scan0132 | |
| Date | 7th May 1935 guessed | |
| SPECTRECodename for Phantom III FRAME DISTORTION PURE TORQUE APPLIED AT FRONT ANGULAR DISTORTION 2° 1° 23200 LBS. INS. WITHOUT DASHBOARD WITH DASHBOARD 13250 LBS. INS. FRONT TRAY 40" 30" 1ST BODY BRACKET 39" 2ND BODY BRACKET 36" 3RD BODY BRACKET 28" 4TH BODY BRACKET 17" REAR CROSS MEMBER | ||