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).
Blueprint detailing the testing method and stages for a model frame's 4th (X) cross member.
| Identifier | ExFiles\Box 67\1\ scan0224 | |
| Date | 16th May 1928 | |
| 1ST TEST CROSS MEMBER COMPLETE 2ND TEST TUBULAR MEMBER A REMOVED 3RD TEST DIAGONAL BRACERS B REMOVED (4.OFF) 4TH TEST FRONT REAR & SIDE GUSSETS C REMOVED 5TH TEST A B & C REFITTED. BUT BOLTS D REMOVED ON ALL FOUR BRACKETS MODEL FRAME METHOD OF TESTING 4TH (X) CROSS MEMBER 22.60" 10.840" POSITION OF TUBULAR MEMBERS FRAME BALANCED ABOUT X.Y LOAD APPLIED AT "P" ON O.P E.A.C.10 FRAME ETB | ||