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).
Automatic ratchet adjustments, permissible ratios, and component weights for a car.
| Identifier | ExFiles\Box 179b\2\ img221 | |
| Date | 21th December 1933 | |
| -2- Ha/SDJ.1/MS. 21.12.33. Cont'd.{John DeLooze - Company Secretary} Lockheed's have also been trying automatic ratchet adjustment but told us that the adjustment must not be made too fine owing to having to allow for drum and shoe distortion and expansion. Even with a ratchet adjustment they put 46:1 as the maximum permissible overall-ratio. One further piece of information we acquired is that for a 30 cwt. car the weight of all 5 operating cylinders and piping is 13 1/2 lbs. Ha/Gry.{Shadwell Grylls} | ||