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).
Proposed improvements for the Phantom model, including a new turbulent type aluminium head.
| Identifier | WestWitteringFiles\Q\2-July1927-September1927\ 88 | |
| Date | 9th September 1927 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to BJ. E.{Mr Elliott - Chief Engineer} c. to Wor.{Arthur Wormald - General Works Manager} DA.{Bernard Day - Chassis Design} c. to BY.{R.W. Bailey - Chief Engineer} ORIGINAL. HS{Lord Ernest Hives - Chair}7/LG6.9.27. PHANTOM IMPROVEMENTS. X 8770 J 3994 It is now well over 12 months since we carried out the last 10,000 miles test on the Phantom for the standardisation of new pieces. We consider that a number of improved designs have been tested experimentally and proved to have definite advantages, but at the moment they are held up for further additional improvements. We believe that we could improve our products more rapidly and more economically by introducing the improvements as they are available rather than by attempting to incorporate them all on a new model car. An improvement which we recommend should be got on the cars as soon as possible is the turbulent type aluminium head. The definite advantages with this are :- (1) Detonation reduced to a minimum. The car will run at least twice the distance before decarbon-ising is necessary. (2) We have received complaints of the Phantom of the tendency for it to go on firing after the ignition is switched off. This fault is greatly reduced by the new head. (3) Reduction in weight. Besides the definite advantages inumerated above, the following improvements have been noted, but the exact degree of improvement is difficult to define. (4) Less explosions in silencer. (5) Improved slow running. (6) Better petrol consumption. contd :- | ||