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).
Successful experimental clutch modification on the 4 1/4 litre Bentley.
| Identifier | ExFiles\Box 82\4\ scan0312 | |
| Date | 4th June 1936 | |
| To Sg.{Arthur F. Sidgreaves - MD} from Rm.{William Robotham - Chief Engineer} x200 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}15/KW.4.6.36. 4 1/4 litre Bentley. Replying to Sg.{Arthur F. Sidgreaves - MD}3/E.3.6.36. On the Borg & Beck clutch we have replaced the propellor shaft damper by a spring drive in the centre of the clutch plate. This does the same job, costs very much less, and saves about 10 lbs. weight. Experimentally the modification has been completely successful, but we have left provision for fitting the propellor shaft damper in the event of a customer's complaint arising. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||