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 20HP starter switch with reduced gauge spring fingers, positive release and self-centering contacts.
| Identifier | ExFiles\Box 172\2\ img035 | |
| Date | 21th April 1925 | |
| RR 755 (10M) (SL391 2-11-23) MP 281297 ORIGINAL COMPLETED 11.5.25. STANDARDISATION of CHASSIS PARTS. Date 21.4.25. X No. 3915 Drawing No. D.51234 Description of Parts. 20 HP. STARTER SWITCH WITH REDUCED GAUGE OF SPRING FINGERS, POSITIVE RELEASE AND SELF-CENTERING CONTACTS. Origin. To equalise wear on contacts and improve action of switch generally. Experimental Test Report. ATTACHED. Road Test Report. Run 10,000 miles on 7-G-11 and GF.68. 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. Cost of Old Part. £ 1. 5. 3d. Weight of New Part. Cost of New Part. £ 1. 7. 6d. Difference per Car. Difference per Car. 2. 3d. 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/Rns. 7.5.25. SIGNATURES DATE REMARKS MR. JOHNSON 11.5.25 Agreed. C.Johnson. MR. B. JOHNSON 11.5.25 Agreed. B.J. MR. ROYCE 28/4/25 Agreed FHR MR. WORMALD 21.4.25 Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE 27.4.25 Agreed. Rg.{Mr Rowledge} MR. DAY 23.4.25 Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY 22.4.25 Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD 21.4.25 Agreed. Improvement required, present one does give trouble in service. MR. ELLIOTT 23/4/25 Agreed OE MR. NORTHEY 22.4.25 Agreed. PN.{Mr Northey} MR. HIVES 8.5.25 Agreed. E.Hives. [Stamp] CHASSIS | ||