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 the angular distortion of the Spectre Car 30 EX frame under various pure torque loads.
| Identifier | ExFiles\Box 92\1\ scan0130 | |
| Date | 2nd May 1935 guessed | |
| FRAME DISTORTION OF SPECTRECodename for Phantom III CAR 30 EX PURE TORQUE APPLIED AT FRONT CAR RESTING ON 4 TYRES NOTE :- UP TO THIS MAXIMUM LOAD THE CADILLAC CAR SHOWED NO MEASURABLE DISTORTION ie. < 10' ANGULAR DISTORTION 0° 50' 0° 40' 0° 30' 0° 20' 0° 10' 35000 LBS INS 30000 LBS INS 14000 FRONT TRAY C OF PIVOTS DASHBOARD REAR AXLE REAR CROSS MEMBER 16" 42.75" 53" 53" 26" | ||