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).
Design features and criticisms of the Peregrine Clutch.
| Identifier | ExFiles\Box 1\5\ B001_X 111-114-page12 | |
| Date | 30th August 1932 | |
| X112 To Da.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} E.2/HP.30.8.32. c. Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} Hs.{Lord Ernest Hives - Chair} By.{R.W. Bailey - Chief Engineer} re Peregrine Clutch. We send you herewith blueprints of LeC.3178 and RR. Sch. 149. The former shows the Peregrine II clutch with the rubber coupling deleted and with provision made for catching the overflow of oil from the spigot bearing, and passing it away outside of the clutch. The clutch is also shown with ventilation holes deleted as it is considered that these holes give rise to a large amount of noise. An alternative scheme of clutch spigot lubrication is shown based on collecting some of the oil from the gearbox spigot bearing. The idea is to try the clutch in this state to find a value for the rubber coupling, and also to make improvements in other directions. RR.Sch. 149 shows the general arrangement of the clutch as originally made up by scaling down from J.3. There are two features in this design which are criticised by the works as follows: Firstly the clutch withdrawal fittings which pass through the presser plate are said to so weaken the plate as to cause local distortion, and also although the friction face of the presser plate is finished completely assembled the faces of the withdrawal pieces never remain one with the presser plate. The second point is that a screw adjustment would be preferred in place of removing and altering the length of the distance pieces which at present constitute the means of taking up wear on the clutch and equalising the levers. We should like to know if you have any design work in progress which would help with regard to the criticisms raised, and in the meantime we are instructing LeC.3178 for the purposes which have been discussed in the foregoing. Prints LeC.3178 RR.Sch.149. E.{Mr Elliott - Chief Engineer} | ||