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).
Technical progress report on various component tests and parts for multiple car models.
| Identifier | ExFiles\Box 155\2\ scan0119 | |
| Date | 16th July 1937 | |
| -2- (3) Investigate bobbing of oil level indicator, also oil leak into the clutch pit. (4) Heat to oil test to be carried out in a similar way to that done on C.17 by F.Potts. C.17 Complete comparative exhaust system tests. 25/30, Bentley, Vauxhall, Chevrolet and Oldsmobile. GENERAL Progress parts for adapting Bypass filter parts for despatch to France for Wraith in accordance with LeC.5775. Further bypass filters should arrive at Shipping Office from America. Allot one complete for O.B.1V., also element for Wraith marked No.4. No.5. TEST HOUSE. WRAITH DISTORTION TESTS Complete distortion of Wraith crankcase with block and cylinder head in position. B.9. Continue all consumption tests according to instructions by Rm{William Robotham - Chief Engineer}/Mths.{Reg Matthews} No.2. BED. SINGLE CYLINDER UNIT. Requested for repeat test of the effect of exhaust back pressure between the high power head unit and standard unit. Original tests on the above shows a big drop in M.E.P. when the back pressure is raised between 1 & 2 Ins.Hg. at 1000 R.P.M. continued | ||