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).
Letter from Rolls-Royce of America about failed tests on water-heated induction pipes for Phantom and Silver Ghost models.
| Identifier | ExFiles\Box 66a\2\ scan0155 | |
| Date | 5th March 1927 | |
| ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. X8070 Oy2-E-3527 March 5, 1927. Mr. E.{Mr Elliott - Chief Engineer} W. Hives, Rolls-Royce, Ltd., Derby, England. (Copy for attention of Mr.Haldenby) Dear Mr. Hives: Re Induction pipe - Section 5070 Have read your report of February 17th on induction pipes with the greatest interest. We made a water-heated jacket of the new scheme with exhaust heating to the water, on MX{John H Maddocks - Chief Proving Officer}-2 the original left-hand drive Phantom, and also on 69-JG Silver Ghost, and in both cases scored a complete failure. The speed of heating up seemed good on the Phantom but only after we had taken away the restriction and allowed circulation through the full bore of the 5/16 connection. However we had some very glutinous anti-freeze in the water which will have slowed down the circulation when cold. In both cases the temporary reversion to a water-heated system has given us an invaluable reminder of our troubles of 1921 and 1922. Even when the water had thoroughly heated up, both engines were ever so much rougher than anything we remember for years and in the case of the Silver Ghost the get-away from cold was impossible, and the oil was diluted out of recognition in four days use. We are therefore very satisfied to see that you find the exhaust hot-spot the best scheme. Your remark re decreased detonation with the exhaust-heated scheme reminds me that when we first used this scheme on the Silver Ghost we noticed not only that the engine was smoother but that the tendency | ||