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 a modified 3rd and 4th sliding piece after weakening the concertina section.
| Identifier | ExFiles\Box 94\2\ scan0070 | |
| Date | 19th November 1936 | |
| FILE.328. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls} 19.11.36. 3rd. and 4th. SLIDING PIECE. Rm.{William Robotham - Chief Engineer}255. - Modification to G.84834 Herewith results of tests after weakening the concertina section. The results shew this to be approximately 28% weaker (instead of the anticipated 50%) in bending than originally. The deflections at the weakened section were also recorded. W.Bell. NB. Please replace original prints of G.84834 with corrected copies supplied. WB.{Mr Brazier/Mr Bell} | ||