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).
Exhaust boom on a 20/25 HP model, the supply of mounts and future standardization.
| Identifier | ExFiles\Box 104\2\ scan0148 | |
| Date | 9th October 1935 | |
| S/S - CX.{Major Len W. Cox - Advertising Manager} c. to L.G. c. to WGT. c. to C. c. to BY.{R.W. Bailey - Chief Engineer} c. to EF. c. to JLL. c. to Ld. c. to E.{Mr Elliott - Chief Engineer} X523 HE/Rs.{Sir Henry Royce's Secretary}3/KB.9.10.35. 30 M.P.H. Exhaust Boom - 20/25 HP. Replying to CX.{Major Len W. Cox - Advertising Manager}2/KB.8.10.35. We have no supplies of mounts available. We will, however, prepare 3 sets and send them down to be fitted to the Trials Cars. The loss of H.P. and hence maximum speed with this mount is negligible. Whilst we do not have the opportunity of trying a great many New 20/25 HP. cars, our experience has been that no more than 10% suffer from this exhaust boom; possibly JLL. will confirm whether this is so or not. With a view to standardisation, we are co-operating with the Design Dept. with a view to getting a scheme suitable for production. HE/Rs.{Sir Henry Royce's Secretary} | ||