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).
Issue with self-adjusting tappets (LeC. 2808) where reserve oil is not retained at high speed, causing noise.
| Identifier | ExFiles\Box 48\4\ Scan145 | |
| Date | 1st June 1931 | |
| HS{Lord Ernest Hives - Chair}: FROM E.{Mr Elliott - Chief Engineer} X4226 E1/MS.6.31. Copy to SG.{Arthur F. Sidgreaves - MD} " WOR.{Arthur Wormald - General Works Manager} " BY.{R.W. Bailey - Chief Engineer} SELF ADJUSTING TAPPETS. LeC. 2808. A propos of our telephone conversation, and with further reference to self adjusting tappets, we have been examining LeC. 2808., and it appears clear that at high speed the reserve oil will not stay inside the tappet, neither is this oil very likely to get replenished. This would account for the tappet gear becoming noisy if run fast! Some modification will be necessary to the design which we will put up to R.{Sir Henry Royce} on his return from London. E.{Mr Elliott - Chief Engineer} | ||