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).
Comparing design schemes for the Peregrine Clutch, outlining points of economy and drawbacks.
| Identifier | ExFiles\Box 1\5\ B001_X 111-114-page30 | |
| Date | 16th December 1932 | |
| 8112. To Sft.{Mr Swift} from E.{Mr Elliott - Chief Engineer} E.4/HP.16.12.32. c. Wcr. Hs.{Lord Ernest Hives - Chair} Ev.{Ivan Evernden - coachwork} re Peregrine Clutch. With regard to the Peregrine clutch, we would refer you to N. Scheme 3513 for the latest design. Just roughly going over this compared with R.R. scheme 149 for the present type we should say there may be some economy on the following points: (1) Clutch withdrawal bearing. (2) The withdrawal pins and adjustment. (3) The substitution of flat springs on the back plate for the set up effect in place of a square section spiral spring construction on the ends of the withdrawal levers. (4) The rubber coupling has been deleted. (5) Simpler turning of the flywheel and no internal splines to be cut. (6) Simpler driving features on pressure plate. On the debit side there are 8 springs instead of 6, and 4 withdrawal levers as against 3. E.{Mr Elliott - Chief Engineer} | ||