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 instructions and investigations for 'Chunking Tests' on the Spectre unit, referencing Phantom, Buick, and Vulture.
| Identifier | ExFiles\Box 91\1\ scan0099 | |
| Date | 9th October 1935 guessed | |
| X 300 Chunking Tests - SpectreCodename for Phantom III. (1) Instruct SpectreCodename for Phantom III unit with flywheel equal to Phantom. (2) Instruct gears to be driven on shafts of SpectreCodename for Phantom III I gearbox. Also gears to be fitted with .002 back lash on pitch line. (3) Clutch splines to be 100%. (4) SpectreCodename for Phantom III I flywheel to be brought up to Trials car inertia. (5) Hardy to draw cone angles 8° and anti-rattle synchro device. (6) Investigate Buick and decelerating device control. (7) Remove Buick gearbox and insert slack having measured and demonstrated to the necessary people the excellence of the gearbox. (8) Effect of compression ratio. (9) Vulture. Replace clutch centre and fabric coupling by solid pieces. (10) Buick. Lock up clutch centre. (11) SpectreCodename for Phantom III. Proper clutch centre plate. (12) If Buick or Vulture shews improvement by solid clutch centre, instruct one for the SpectreCodename for Phantom III. | ||