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).
Consistent failures of the Phantom I exhaust manifold and a proposed new design.
| Identifier | ExFiles\Box 66\2\ scan0326 | |
| Date | 16th January 1931 | |
| To Wor.{Arthur Wormald - General Works Manager} From Hs{Lord Ernest Hives - Chair}/GWH.{George W. Hancock - Head Chateauroux} Re. PHANTOM I. EXHAUST MANIFOLD. The failures of Phantom I. exhaust manifolds were consistent during the 10,000 miles tests, and although improvements were made from time to time, we did not obtain an entirely reliable manifold. However a lot of further knowledge has been obtained with the Phantom II. and 25 HP. manifolds with the result that W.W. have now given us a design of manifold for Phantom I. which should stand up for a considerable time. The manifold has yet to be fully tested out before we can produce it for depots' but we are hoping to get the job through with as little delay as possible. Hs{Lord Ernest Hives - Chair}/G.W.Hancock. | ||