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).
Material changes and cost savings for Wraith and Bentley 'M' series air silencers.
| Identifier | ExFiles\Box 152\3\ scan0247 | |
| Date | 29th March 1938 | |
| To. [redacted] & Rm.{William Robotham - Chief Engineer}....From RHC{R. H. Coverley - Production Engineer}/SB.{Mr Bull/Mr Bannister} Handwritten: 1297. File for WYMAN RHC{R. H. Coverley - Production Engineer}/SB.{Mr Bull/Mr Bannister}1/MC.29.3.38. AIR SILENCERS Further to RHC{R. H. Coverley - Production Engineer}/SB.{Mr Bull/Mr Bannister}1/MC.19.3.38., quotations are now available which show that the adaption of steel end caps to prevent rattles on Wraith air silencer will provide a saving of 4d per chassis. Contrary to expectations, the makers are prepared to manufacture the inner frame, E.83767, from 18 SWG S/D, using existing tools, and it will, therefore, not be necessary to adopt the two piece construction previously proposed by us. All existing aluminium end caps and frames are now delivered for Bentley 'M' series, and we suggest that Wraith frame, E.83767, and end cap, E.83764, be ordered in 18 SWG S/D for all production chassis. RHC{R. H. Coverley - Production Engineer}/S.Bannister. | ||