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 special valve for the Autovac, intended to reduce negative effects on slow running.
| Identifier | ExFiles\Box 40\4\ Scan176 | |
| Date | 22th April 1926 | |
| RR 755 (10M) (DS130 12-9-24) MS 301225 X3579 COMPLETED 26.5.26 STANDARDISATION of CHASSIS PARTS. Date SSIU/SSYS No. X No. 22.4.26 Drawing No. Part List Description of Parts SPECIAL VALVE FOR AUTOVAC. Origin. To reduce effect on slow running. Experimental Test Report. It has been proved that when the Autovac is exhausted and very rich mixture is drawn into the induction pipe, this upsets the slow running. The makers of the Autovac recommend fitting an extra valve on the induction pipe which makes the Autovac practically inoperative when the depression in the induction pipe exceed 7 lbs. Road Test Report. Ran 10,000 miles on 8-EX. 12 of these fittings have been supplied for trials cars and special customers complaints - we have had no trouble with them. 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. Cost of Old Part. £ 2. 2. 0 Weight of New Part. Cost of New Part. £ 2. 6. 0 Difference per Car. Difference per Car. £ 4. 0d. increase. Cost of Parts in Works which will be scrapped if commenced on:- Series.......£........ Series.......£........ Series.......£........ Signature of Mr. De LOOZE that above is correct. My/Rb.{R. Bowen} 26.4.26. SIGNATURES DATE REMARKS MR. JOHNSON MR. B. JOHNSON 20.5.26 Agreed. B. Johnson. MR. ROYCE 15.5.26 Agreed. FHR. MR. WORMALD 22.4.26 Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE 26.4.26 Agreed. Rg.{Mr Rowledge} MR. DAY 24.4.26 Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY 22.4.26 Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD 22.4.26 Agreed, until something better obtained. Recommend immediate action and retrospective action in case complaints. EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT 24.4.26 Agreed. E.{Mr Elliott - Chief Engineer} MR. NORTHEY 23.4.26 Agreed. PN.{Mr Northey} MR. HIVES 18.5.26 Agreed. E.Hives. | ||