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).
Gearbox modifications and associated blueprints for the Silver Dawn 80 model.
| Identifier | ExFiles\Box 83\3\ scan0136 | |
| Date | 7th September 1939 | |
| Copy of memo from By/CRL{C. R. Lisson} dated Sept. 7th 1939. To Rm.{William Robotham - Chief Engineer} from Rm{William Robotham - Chief Engineer}/HH. c. to Rm{William Robotham - Chief Engineer}/Wym.{G. Harold Whyman - Experimental Manager} Rm{William Robotham - Chief Engineer}/HH.1/SW.15.1.41. SILVER DAWN 80. Zoo Gearbox & Actuating Gear Section 6030. 1st & 3rd Motion Shafts Section 6040. 2nd Motion Shaft. Section 6050. Reverse Shaft. Section 6070. PD.477 B.V. Gearbox Modified for W.80. PD.478 Pinion on Reverse Layshaft PD.484 Modified 2nd Speed Synchromesh. Please receive herewith two blueprints of each of the following :- Sec.6030. GB.5393 Gearbox & Actuating Gear. L.O.P. (9 sheets). Sec.6040. GB.5394 1st & 3rd Motion Shafts. Standard Ratios. LOP (4 sheets). Sec.6050. GB.5395 2nd Motion Shaft. Standard Ratios. LOP (2 sheets). Sec.6070. GB.5396 Reverse Shaft & Gears. L.O.P. (2 sheets). One blueprint of each of the above attached to Les's copy. This completes the instructions for the above. Kindly instruct. Rm{William Robotham - Chief Engineer}/HH. Hade | ||