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).
Standardization of 11 inch Thermoid clutch driven plates for the 25/30 HP model.
| Identifier | ExFiles\Box 103\1\ scan0250 | |
| Date | 6th December 1937 | |
| 572 Hd.{Mr Hayward/Mr Huddy} from Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} c. Hs.{Lord Ernest Hives - Chair} Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler}8/AP.6.12.37. CLUTCH 25/30.HP. We have available a few 11" clutch driven plates fitted with Thermoid, and as this material is likely to be standardized for Production in the very near future, further supplies will shortly be available for Depots. Will you therefore please issue a Depot Sheet instructing that when a 25/30 clutch has to be dismantled for any reason, the driven plate should be replaced by one faced with Thermoid, because dressing up the faces of the old plate can only be regarded as a temporary expedient. Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} | ||