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).
Extract detailing issues of wear and noise with tappet rollers and proposing a solution.
| Identifier | ExFiles\Box 158\4\ scan0012 | |
| Date | 28th June 1921 | |
| X.3733 Extract from EP{G. Eric Platford - Chief Quality Engineer}/Thn12/F28.6.21. X.3719 X.3733 Tappet rollers - these have given considerable trouble with wear and noise, as already reported. Roller pins in rockers now being pushed in to ensure no movement at this point. Inspection has shown that if these pins move at all they soon wear rapidly in preference to wearing on the roller bore, andbecome noisy. I believe from what I have seen here and at Derby that the pins should be fitted so that no turning movement can take place. EP.{G. Eric Platford - Chief Quality Engineer} | ||