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 proposal for the low speed jet control cone on the Phantom.
| Identifier | ExFiles\Box 66a\4\ scan0108 | |
| Date | 14th October 1925 | |
| RR 755 (10H) (SL391 2-11-23) MP 281297 48240 COMPLETED 30.10.25. STANDARDISATION of CHASSIS PARTS. Date 14.10.25. No. 8080 / S240 Description of Parts. LOW SPEED JET CONTROL CONE; Origin. To give better control. Experimental Test Report. The control for the low speed jet on the Phantom is too quick. If the control is used for economy the engine is likely to stop due to low speed jet weakness. It is proposed to alter the taper from 1 in 6 to 1 in 7.5. Road Test Report. Fitted to 46-PK run 1500 miles. Fitted to 8-EX. We recommend that this alteration should be adopted. 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. (Selected with an 'X') 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. £ Weight of New Part. Cost of New Part. £ Difference per Car. None Difference per Car. £ 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 Ruse 14/10/25 SIGNATURES, DATE, REMARKS MR. JOHNSON, 30.10.25, Agreed., C. Johnson. MR. B. JOHNSON, 30.10.25, Agreed., B.J. MR. ROYCE, 23.10.25, Agreed., FHR. MR. WORMALD, 14.10.25, Agreed., Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE, 15.10.25, Agreed., Rg.{Mr Rowledge} MR. DAY, 16.10.25, Agreed., Da.{Bernard Day - Chassis Design} MR. BAILEY, 14.10.25, Agreed., BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD, 14.10.25, Agreed., EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT, 23.10.25, Agreed., E.{Mr Elliott - Chief Engineer} MR. NORTHEY, 16.10.25, Agreed., PN.{Mr Northey} MR. HIVES, 28.10.25, Agreed., E.{Mr Elliott - Chief Engineer} Hives. | ||