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 the operating temperature for the red warning light on the thermometer to 97.5 degrees.
| Identifier | ExFiles\Box 171\1\ img209 | |
| Date | 1st August 1930 | |
| RR 75B REVISED (10H) (DG 342 19-7-29) BM. 6/643. ORIGINAL COMPLETED 4.9.30. STANDARDISATION of CHASSIS PARTS. Description of Parts: OPERATION AT 97.5º OF THE RED WARNING LIGHT ON THERMOMETER. Origin: TO prevent unnecessary apprehension. Experimental Test Report: We wish to revert to this temperature of operation because if brought in lower the driver becomes alarmed unnecessarily. Road Test Report: Run 10,000 miles on several cars. Retrospective action might with advantage be taken on cars destined for hot climates. 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. Cost of Old Part. £2. 7. 6d. Cost of New Part. £2. 7. 6d. Difference per Car. £ NIL. Agreed Wor.{Arthur Wormald - General Works Manager} Cost of Parts in Works which will be scrapped if commenced on:- Series..........£......... Series..........£......... Series..........£......... Signature from Cost Dept. that above is correct. G/RD.1.9.30. G.2.9.30 INITIAL | DATE | REMARKS BJK Sg.{Arthur F. Sidgreaves - MD} | 3.9.30 | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 11/8/30 | Agreed RHR. WOR.{Arthur Wormald - General Works Manager} | 19.8.30 | Agreed Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 11.8.30 | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 12.8.30 | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 7.8.30 | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 4.8.30 | Agreed EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 11.8.30 | Agreed AE. PN.{Mr Northey} | 20.8.30 | Agreed PN.{Mr Northey} CWB. | | Agreed C. HS.{Lord Ernest Hives - Chair} | | Agreed Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} PHANTOM (watermark) | ||