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).
Instructions for endurance testing of various engine units and components.
| Identifier | ExFiles\Box 155\2\ scan0149 | |
| Date | 15th September 1937 | |
| -2- C.17 continued (b) Fit 2 inlet cam camshaft Ex.24268 and repeat tests (a). No.5. Test House. Ph.III. No.6. Unit. No.3. to be removed and above unit fitted immediately received on test. The important feature of this unit is the Hall's metal big end bushes and the endurance run on these is urgent. New parts include, (a) Whitemetal main bearings (Std.) (b) Crankshaft. (c) Hall's metal bushes on forked rod, inner bearing in A.C.6. Standard steel shells machined to suit A.C.7. bushes, outer blade rod bearing as standard W/M.{Mr Moon / Mr Moore} (d) Klingerite cylinder head joints. Following usual running in for these parts endurance run as follows:- 25 hours full throttle under Bentley speed conditions, 30 mins. at 4000, 25 mins at 4250 and 5 mins at 4500 R.P.M. Oil inlet temperature at 100°C. 105°C. and pressure of 30-40 lbs/sq.in. at this temperature. Both A.{Mr Adams} & B. cylinder heads to be run with the hydraulic mechanism in action. If O.K. at end of 25 hours return to Shop for quick inspection and if O.K. will be returned to test for further running. B.19 Unit Test to continue as outlined in previous memo. Rm{William Robotham - Chief Engineer}/Mths.{Reg Matthews} to get a Bentley or 25/30, cylinder block frozen and thawed several times with 1 1/2" of water standing in base. continued | ||