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 document for an air silencer carburetter to reduce suction noise.
| Identifier | ExFiles\Box 171\1\ img262 | |
| Date | 21th November 1930 | |
| RR 75B (10M) (3-7-30) BM. C/2571. COMPLETED 21.11.30 STANDARDISATION of CHASSIS PARTS. Description of Parts. AIR SILENCER CARBURETTER. Origin. To reduce carburetter suction noise. Experimental Test Report. Tested on Test bench for power and metering and found satisfactory. Power loss due to silencing only 2.H.P. max. Road Test Report. Run 10,000 miles on 24-EX in France. Suction noise considerably reduced compared with std. carburetter. Gauze can be fitted to act as cleaner. Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £ 3. 17. 8d. Cost of New Part. £ 4. 0. 0d. Difference per Car. £ -. 2. 4d. Increase. Signature from Cost Dept. that above is correct. X No. 7080. Drawing No. Lec. 2803 Part List E.{Mr Elliott - Chief Engineer} 80520. A Scrap and replace at all costs, including Chassis already delivered to Customers. B Scrap and replace on Chassis in Works. C Scrap present stock and replace on all Chassis not yet handed to test. D Use existing stock Alteration effective on future Chassis. Cost of Parts in Works which will be scrapped if commenced on :- Series.........£......... Series.........£......... Series.........£......... INITIAL | DATE | REMARKS G/RB.{R. Bowen}17.11.31. C.20.11.31. WOR.{Arthur Wormald - General Works Manager} SG{Arthur F. Sidgreaves - MD} | 21.11.30 | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 3/10/30 | Agreed R.{Sir Henry Royce} WOR.{Arthur Wormald - General Works Manager} | 3.10.30 | Agreed Wor.{Arthur Wormald - General Works Manager} C. | | Agreed C. RG.{Mr Rowledge} | 3.10.30 | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 9.10.30 | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 6.10.30 | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 9.10.30 | Agreed, cannot agree however that 24-EX. shows improved suction noise. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 6.10.30 | Agreed AE. PN.{Mr Northey} | 10.10.30 | Agreed PN.{Mr Northey} HS.{Lord Ernest Hives - Chair} | | Agreed. | ||