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).
Test procedures and observations for engine components, focusing on tappets, springs, and oil consumption.
| Identifier | ExFiles\Box 155\2\ scan0054 | |
| Date | 18th February 1937 | |
| -3- Confirm one way or the other by power with silent tappet action deletion by removal of plunger springs. The idea of above is to see whether the existing std. double springs can be replaced by single springs. Check for bounce and surge with hydraulic tappets out of action. Do not set exhausts at less than .010. (2) Following the bounce tests the bottom tappets to be examined and their condition recorded. These are two fescolised tappet blocks. two Hykro " two S/ZN. cloudburst tappet blocks. Hykro camshaft. (3) Note whether any water leaks with C. and A.{Mr Adams} gaskets. (4) Has R.R.56. big end bearings, standard Hall's A.C.7. main bearings. BENTLEY HEAD. B.9. Oil consumption tests proceeding with - (1) Special block gound in position on case and cylinder head pistons to suit. (2) Tests that are thought necessary in conjunction with (1) (3) Run two plated Aerolite pistons in conjunction with standard cylinder block. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||