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).
Standardisation of a C.I. bend for an exhaust hot spot to reduce a one beat note.
| Identifier | ExFiles\Box 171\2\ img176 | |
| Date | 22th June 1934 | |
| RR 755 (SH) (S7312. 29-12-33) BM 3/640/2 COMPLETED 12.7.34. 40/50 STANDARDISATION of PARTS. Date 22.6.34 X No. 7230. Drawing EX. No. 13565/G Part List Description of Parts. C.I. BEND FOR EXHAUST HOT SPOT. Origin. To reduce the Exhaust one beat note. Report of Experimental Test. Fitted to 104-MY and Exptl. Cars. The one beat note is considerably reduced and can only be heard faintly at 12 M.P.H. full throttle. This consists of increasing the thickness of the Bend. Weight of Old Part. Cost of Old Part. £ Weight of New Part. Cost of New Part. £ Difference per Car. Difference per Car. £ Negligible. Cost of Parts in Works which will be scrapped if commenced on:- Series...........£....... Series...........£....... Series...........£....... Signature from Cost Dept. that above is correct. G/Rb.{R. Bowen} 21.6.34. INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 9.7.34. | Agreed Sg.{Arthur F. Sidgreaves - MD} WOR.{Arthur Wormald - General Works Manager} | 25.6.34. | Agreed Wor.{Arthur Wormald - General Works Manager} C. | 26.6.34. | Agreed C. RG.{Mr Rowledge} | | Rg.{Mr Rowledge} absent. DA.{Bernard Day - Chassis Design} | 29.6.34. | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 26.6.34. | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 25.6.34. | Agreed EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 25.6.34. | Agreed AE. BN.{W.O. Bentley / Mr Barrington} | 4.7.34. | Agreed Bn.{W.O. Bentley / Mr Barrington} SFT.{Mr Swift} | 25.6.34. | Agreed Sft.{Mr Swift} MX.{John H Maddocks - Chief Proving Officer} | 25.6.34. | Agreed Mx.{John H Maddocks - Chief Proving Officer} HS.{Lord Ernest Hives - Chair} | 22.6.34. | Agreed Hs.{Lord Ernest Hives - Chair} | ||