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).
Test results for the 'SS' model's cold start performance compared to the Phantom, resulting in a modification to the engine heating system.
| Identifier | WestWitteringFiles\T\2January1929-June1929\ Scan133 | |
| Date | 1st February 1929 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} c. to E.{Mr Elliott - Chief Engineer} DA.{Bernard Day - Chassis Design} c. to BY.{R.W. Bailey - Chief Engineer} ORIGINAL. Hs{Lord Ernest Hives - Chair}5/LGS. 2. 29. 'SS{S. Smith}' - S E C R E T. X7770 X7250 We have carried out tests by leaving the SS.{S. Smith} cars out all night in 10° to 15° of frost and find that for starting and getting away, using Shell Mex which is a low grade fuel, they are quite satisfactory. Comparative tests made with the standard Phantom arranged with water heating shews the SS.{S. Smith} to be very much better. It has therefore been arranged that the connection for exhaust heating shall be deleted on the production engines. We will arrange a temporary scheme as suggested by you of restricting the water flow when the shutters are closed. This would appear to be the simplest way of warming the engine up more quickly. Hs.{Lord Ernest Hives - Chair} | ||