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 self-draining autovac float with larger stem and vent holes.
| Identifier | ExFiles\Box 64\1\ scan0101 | |
| Date | 14th July 1930 | |
| RR 755 REVISED (10H) (DG 348 19-7-29) BM. 6/643. COMPLETED 1.9.30. x7510. STANDARDISATION of CHASSIS PARTS. Date 14.7.30. Description of Parts: M/Ph SELF-DRAINING AUTOVAC FLOAT WITH LARGER STEM & VENT HOLES. Origin: To enable self-draining action to cope with temperature effect which makes present self-draining float inoperative. Experimental Test Report: Self-draining action of float cannot be made to fail under considerably higher temperatures than ever attained on the car. Road Test Report: not. This is an actual alteration in design therefore road test is unnecessary. X No. 7510. 5510. Drawing No. Part List 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. Signature from Cost Dept. that above is correct: O.K. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Cost of Old Part: £ 1 - 8 - 0 Cost of New Part: £ 1 - 8 - 0 Difference per Car: £ Nil. for Phantom & 20/25 HP Chassis Cost of Parts in Works which will be scrapped if commenced on:- Series............£......... Series............£......... Series............£......... [STAMP: CANCELLED / 20/25 H.P. CHASSIS] [STAMP: Received, with 25 in the center of a clock face] INITIAL | DATE | REMARKS XX Sg.{Arthur F. Sidgreaves - MD} | 28-8-30 | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 22.7.30 | Agreed FHR. WOR.{Arthur Wormald - General Works Manager} | 18.7.30 | Agreed Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 18.7.30 | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 19.7.30 | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 18.7.30 | 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} E.{Mr Elliott - Chief Engineer} | 19.7.30 | Agreed AE. PN.{Mr Northey} | 29.7.30 | Agreed PN.{Mr Northey} CWB. | | Agreed C. HS.{Lord Ernest Hives - Chair} | | Agreed. | ||