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 Phantom III filter body, filter gauze, and filter chamber plug.
| Identifier | ExFiles\Box 135\2\ scan0167 | |
| Date | 20th May 1937 | |
| RR 755 (soft) 3M37 7-4-37 WHK 26070 COMPLETED 21.8.37. PHANTOM III STANDARDISATION OF PARTS. Description of Parts: P.III FILTER BODY. FILTER GAUZE. FILTER CHAMBER PLUG. Date: 20.5.37. X No: 1138. Drawing No.: E.87324. Part No.: E.87322. List: E.60804. Origin: The filter body to be made in brass instead of Aluminium to prevent the thread being turned off by the nut. The stainless Filter Chamber Nut to be made in place of stainless and plated similar to 25/30. The 100 mesh filter gauze to be used in place of 60 mesh. This is to overcome the probable cause of carburettors flooding. We are standardising these parts although no mileage has been run from the evidence taken during our investigation upon flooding P.III carb. See - E.1/HP.15.5.37. Tests taken by Mx.{John H Maddocks - Chief Proving Officer} have proved that the 100 mesh filter has sufficient area for the petrol requirements of P.III engine when it is 2/3 choked up. Cost Table: Cost of Old Part: MATERIAL £1 8s, LABOUR £1 0s, CHARGES £1 9s, TOTAL £4 5s Cost of New Part: MATERIAL £1 3s, LABOUR £1 10s, CHARGES £3 2s, TOTAL £6 3s Nett Increase: TOTAL £1 10s Signature from Cost Dept. that above is correct: G/RL 11.6.37. Approval Table: INITIAL: SG.{Arthur F. Sidgreaves - MD} | DATE: 20-8-37 | REMARKS: Agreed Sg.{Arthur F. Sidgreaves - MD} INITIAL: HS.{Lord Ernest Hives - Chair} | DATE: | REMARKS: Agreed Hs.{Lord Ernest Hives - Chair} INITIAL: C. | DATE: 18.6.37. | REMARKS: Agreed C. INITIAL: E.{Mr Elliott - Chief Engineer} | DATE: 21.6.37. | REMARKS: Agreed E.{Mr Elliott - Chief Engineer} INITIAL: DA.{Bernard Day - Chassis Design} | DATE: 24.6.37. | REMARKS: Agreed Da.{Bernard Day - Chassis Design} INITIAL: BY.{R.W. Bailey - Chief Engineer} | DATE: 18.6.37. | REMARKS: Agreed By.{R.W. Bailey - Chief Engineer} INITIAL: EP.{G. Eric Platford - Chief Quality Engineer} | DATE: | REMARKS: INITIAL: RHC.{R. H. Coverley - Production Engineer} | DATE: 24.6.37. | REMARKS: Agreed RHC.{R. H. Coverley - Production Engineer} 3. Do not agree to tool costs, which 37. are being investigated, arrangements have been made to reduce by modified process which will avoid increase in tool costs. RHC.{R. H. Coverley - Production Engineer} INITIAL: MX.{John H Maddocks - Chief Proving Officer} | DATE: 18.6.37. | REMARKS: Agreed MX.{John H Maddocks - Chief Proving Officer} INITIAL: RM.{William Robotham - Chief Engineer} | DATE: | REMARKS: | ||