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).
Request to test a front expansion box for the 20/25 HP exhaust system using a different gauge material to overcome a 'tinny' effect.
| Identifier | ExFiles\Box 6\7\ 07-page137 | |
| Date | 19th August 1931 | |
| J8230. To RHC.{R. H. Coverley - Production Engineer} From Ha/Lid.{A. J. Lidsey} Ha/Lid.{A. J. Lidsey}2/MJ.19.8.31. 20/25 HP. EXHAUST SYSTEM. Will you please make up for test a front expansion box to N.Sch.3286 but in 10 gauge material (.128); this experiment is to try and overcome the 'tinny' effect which was produced when using 13 gauge material. Ha/A.J.Lidsey. | ||