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).
Testing of malleable iron exhaust manifolds for a Phantom II to prevent fractures caused by thermal expansion.
| Identifier | ExFiles\Box 14\6\ Scan193 | |
| Date | 17th April 1931 | |
| Mr. Goodall Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} 87-230. BY9/G.17.4.31. PHANTOM 11 - EXHAUST MANIFOLDS. Please note that the set of exhaust manifolds made in malleable iron which were stretched to my instructions should be handed over to Mr. Hancock so that he can try them out on an engine and learn whether the change in material will prevent the change in length of the pipe which occurs owing to the heating and cooling, and stop fractures occurring resulting from this. BY.{R.W. Bailey - Chief Engineer} | ||