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).
Modifications and comparisons of the Peregrine clutch design.
| Identifier | ExFiles\Box 1\5\ B001_X 111-114-page33 | |
| Date | 17th January 1933 | |
| E.{Mr Elliott - Chief Engineer} FROM DA.{Bernard Day - Chassis Design} C. to SG.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} BY.{R.W. Bailey - Chief Engineer} HS.{Lord Ernest Hives - Chair} PEREGRINE CLUTCH. Referring to our conversation on the telephone we have looked at N. sch. 3513, the Peregrine clutch with increased friction surfaces etc. and have compared it with G.100500. There is a slight difference in the distance between the face of the crankcase and the clutch shaft. We think the existing distance could have been used with the clutch shewn on N. sch. 3513, but in order to remove any doubts we have made N. sch. 3654, herewith, shewing the back pressure plate slightly reduced in thickness, and the clutch in consequence moved forward a small amount giving more clearance between the adjusting set screws and the operating shaft. This also enables a rubber joint exactly like that on G.100500 to be used as indicated. We understand that the oil baffle shown on N.sch.3513 is not required. If it is deleted the existing crankshaft is unaltered. We suggest however that it might be possible to fit to existing crankshafts an oil catcher which would be satisfactory until the crankshaft itself was altered. This enables both the surfaces to be of cast iron, and also gives the increased areas which at one time were considered necessary. Regarding the flexible rubber coupling we have now in a partly finished state a coupling with steel springs which we hope to be able to send you before long. DA{Bernard Day - Chassis Design}+ | ||