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 larger Autovac valve for chassis to overcome petrol starvation at high speeds.
| Identifier | ExFiles\Box 40\4\ Scan346 | |
| Date | 4th June 1930 | |
| RR 788 REVISED (10M) (DO 348 18-7-29) SM. 6/643. COMPLETED 5.7.30. x 3579 STANDARDISATION of CHASSIS PARTS. Date 4.6.30. X No. 7510. Drawing No. AV.23. No. x3579. Part List R/EB Description of Parts. AUTOVAC. LARGER VALVE. Origin. To overcome starvation of petrol at high sustained speeds. Experimental Test Report. Fitted to 23-EX engine. Supply of petrol ample for all speeds of engine. Road Test Report. Tested for 10,000 miles in France. No shortage of petrol occurred and full supply was maintained in the carburetter. [ ] 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. Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £ 1-14-0 Cost of New Part. £ 1-14-0 Difference per Car. £ None Signature from Cost Dept. that above is correct. G.R.A 2/7/30 T.G 4/7/30 Cost of Parts in Works which will be scrapped if commenced on:- Series..........£.......... Series..........£.......... Series..........£.......... INITIAL | DATE | REMARKS Sg.{Arthur F. Sidgreaves - MD} | 4-7-30 | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 12.6.30 | Agreed FHR. WOR.{Arthur Wormald - General Works Manager} | 7.6.30 | Agreed Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 5.6.30 | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 6.6.30 | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 6.6.30 | Agreed BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 11.6.30 | Agreed EP.{G. Eric Platford - Chief Quality Engineer}, but failed twice with Br.{T. E. Bellringer - Repair Manager} and EP.{G. Eric Platford - Chief Quality Engineer} on last 500 miles. (Consider due to porous pot type filter).EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 12.6.30 | Agreed E.{Mr Elliott - Chief Engineer} PN.{Mr Northey} | 11.6.30 | Agreed PN.{Mr Northey} CWB. | 6.6.30 | Agreed C. HS.{Lord Ernest Hives - Chair} | | Agreed. | ||