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).
Stress test results for a Spectre Frame with measurements at various points under increasing loads.
| Identifier | ExFiles\Box 94\4\ scan0060 | |
| Date | 19th July 1935 | |
| 4327 To Hs{Lord Ernest Hives - Chair}/Gry{Shadwell Grylls}: Hs{Lord Ernest Hives - Chair}/KS.3/KW.19.7.35. Latest SpectreCodename for Phantom III Frame, without Dash, and also boxing cut away in front of Cross. 1st Point - Front Cross Pan. 2nd " Front of Cross Bracket. 3rd " Front Body Bracket. 4th " 3rd Body Bracket. 5th " 4th Body Bracket. 6th " 5th Body Bracket. 7th " Rear Cross Member. Front centre at 33.5" and rear centre at 46". | Points | 1 | 2 | 3 | 4 | 5 | 6 | 7 | |-----------|--------------|--------------|--------------|--------------|--------------|--------------|--------------| | 400 lbs. | 2º-10'R | 1º-20'R | 1º-10'R | 1º- 0'R | 1º- 0'R | 0º-30'R | 0º-10'R | | 600 lbs. | 0 - 10 / 2 - 40 | 0 - 20 / 1 - 50 | 0 - 10 / 1 - 30 | 0 / 1 - 5 | 0 - 10 / 1 - 10 | 0 / 0 - 40 | 0 / 0 - 20 | | 800 lbs. | 0 - 50 / 3 - 10 | 0 - 30 / 2 - 10 | 0 - 20 / 1 - 50 | 0 - 10 / 1 - 30 | 0 / 1 - 20 | 0 / 0 - 50 | 0 / 0 - 30 | | 1000 lbs. | 1 - 20 / 3 - 50 | 0 - 50 / 2 - 30 | 0 - 40 / 2 - 10 | 0 - 20 / 1 - 40 | 0 - 10 / 1 - 30 | 0 / 0 - 50 | 0 / 0 - 30 | | 1200 lbs. | 1 - 30 / 4 - 10 | 1 - 10 / 3 - 0 | 0 - 50 / 2 - 30 | 0 - 20 / 1 - 50 | 0 / 1 - 40 | 0 / 1 - 0 | 0 / 0 - 40 | | 1400 lbs. | 2 - 10 / 4 - 50 | 1 - 30 / 3 - 20 | 1 - 10 / 2 - 50 | 0 - 40 / 2 - 10 | 0 - 20 / 1 - 50 | 0 / 1 - 0 | 0 / 0 - 40 | | 1600 lbs. | 2 - 20 / 5 - 20 | 2 - 0 / 3 - 50 | 1 - 30 / 3 - 10 | 0 - 50 / 2 - 20 | 0 - 30 / 2 - 0 | 0 / 1 - 0 | 0 / 0 - 40 | | 1800 lbs. | 3 - 20 / 6 - 0 | 2 - 20 / 4 - 20 | 2 - 0 / 3 - 40 | 1 - 10 / 2 - 40 | 0 - 40 / 2 - 10 | 0 - 10 / 1 - 10 | 0 / 0 - 40 | 30" set P.T.O. | ||