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).
The foundry casting results and scrap analysis for P.V. (Merlin) and P.V.G. engine components.
| Identifier | ExFiles\Box 93\4\ scan0009 | |
| Date | 28th January 1935 | |
| (2) P.V. (MERLIN) Continued Pancake Cylinder Heads. | | No. Cast | No. Used | Foundry Scrap | Remarks | |---|---|---|---|---| | D.{John DeLooze - Company Secretary} 1951/2 | 7 | 4 | 3 | 1 scrap on Proof. 2 scrap on Water Test - porous on Top Face & seat bores. | | D.{John DeLooze - Company Secretary} 2600/1 (Lightened type replacing D.{John DeLooze - Company Secretary} 1951/2 ). | 11 | 4 | 5 | 2 scrap on Proof. 3 scrap on Water Test - porous in ports and seat bores. | Crankcases - Foundry scrap 36 1/3%. 11 Castings produced. 4 used. | | | | | | |---|---|---|---|---| | D.{John DeLooze - Company Secretary} 3230 | 4 | 1 | 2 | 1 scrap, leaks in bolt hole. 1 scrap on Proof. Main Bearings out of position. 1 passed but leaks badly in bolt and stud holes. 1 not tested. | | D.{John DeLooze - Company Secretary} 1950 | 2 | 1 | 1 | scrap A.T.D. replaced by lightened type. | | D.{John DeLooze - Company Secretary} 2603 | 6 | 2 | 2 | 2 scrap on Proof - thin C'case walls. 1 sectioned for D.O. 1 used on Dummy Unit. | P.V.G. Cylinder Heads - Foundry Scrap 58% 19 Castings produced. 4 used. | | | | | | |---|---|---|---|---| | D.{John DeLooze - Company Secretary} 2809/10 | 19 | 4 | 11 | 4 scrap thin sections on Rocker Face. 7 scrap on Water Test, porous on Top Face & in ports. 4 passed on 1st. Water test after dope. | continued | ||