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).
Advantages of a double rocker cover and requesting a permanent oil-tight flange be fitted to the next large bore unit head.
| Identifier | ExFiles\Box 88\4\ scan0138 | |
| Date | 10th May 1935 | |
| To RHC.{R. H. Coverley - Production Engineer} X 254 Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}17/KW.10.5.35. Tappet Noise - Big Bore Unit. We are getting a definite advantage from the double rocker cover which has been fitted to B-4-A unit. We should like to be in a position to fit one of these to the large bore unit on B-4-A.{Mr Adams} We only made a temporary job of the flange for carrying the rocker cover. Will you please fit, and make oil-tight, a flange to the next head that comes through for the large bore unit; i.e., the next head produced with a capacity of more than 109 c.c's. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} | ||