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).
Radiator scheme, flywheel drop forging, and a friction-damped spring coupling.
| Identifier | ExFiles\Box 181\M8\ img008 | |
| Date | 18th April 1912 guessed | |
| [Handwritten top] 75482 O/C MT 243/434'11 (2) 9 330 of the water in the radiator is greater with this scheme than with the old scheme. The expression given in Mr Barrington's report that the engine and radiator showed no sign of heating does not sound right; it always gets hot. [Handwritten in red] (R) It does not seem to me that this scheme is quite ready for general adoption. With reference to drop forging of the flywheels, in a note I sent you some time ago I suggested that this should not be done until we ascertained whether a heavy flywheel or a light flywheel is required. It now seems that the drop forging should be arranged for the light flywheel. With reference to the friction damped spring coupling, we do not want this to be fitted with less than the 16 driving springs provided, and which have been calculated by Mr Bailey to be safe for the torque that is to be transmitted; in all cases we should prefer to increase the strength and rigidity of these rather than reduce the strength of them. Referring, however, to the friction required Mr Bailey has arranged for three springs to be provided of 200, 300 and 400 lbs each respectively. We have not heard which of the springs has been applied, but in this case the one giving the least pressure that is found to be satisfactory would be the best one to use. This matter has been further dealt with in another letter. [Handwritten initial] R | ||