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).
The clutch assembly for the Wraith III and Bentley III models.
| Identifier | ExFiles\Box 99\1\ scan0079 | |
| Date | 11th November 1937 | |
| 200B 412. To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler}7/MH.{M. Huckerby}11.11.37. WRAITH III AND BENTLEY III CLUTCH. With regard to the arrg. drawing GCD.2 of the above clutches, we recommend using the Borg & Beck 11.A.3 and 10.A.3 assemblies exactly as now used on the 25/30 and Bentley. We do not think there is justification for the extra cost of the 11.A.6 and 10.A.6 ventilated assemblies, as no trouble with these clutches has been traced to over-heating. As a matter of fact, the ventilated and unventilated assemblies are interchangeable in every respect. Rm{William Robotham - Chief Engineer}/NRC.{N. R. Chandler} | ||