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 chassis parts, specifically the grinding of pistons for the 40/50 HP and 20 HP chassis.
| Identifier | ExFiles\Box 77\3\ scan0277 | |
| Date | 4th October 1923 | |
| R.R. 755 (10M) fsl 73 18-7-23) MP 274954a. X4224 COMPLETED 31.10.23. STANDARDISATION of CHASSIS PARTS. Date 4.10.23. Description of Parts. 40/50 HP. AND 20 HP. CHASSIS. GRINDING OF PISTONS. Origin. To facilitate production. Experimental Test Report. At present all our pistons are ground with clearance on the sides - it has been found that if the side clearance is ground tapered, it avoids hand-fitting. Road Test Report. Adopted by Springfield. We have tested pistons ground in a similar manner and recommend we adopt. X No. 2743 / 4224 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. Cost of Old Part. £ Weight of New Part. Cost of New Part. £ Difference per Car. Difference per Car. £ 9/10d. saving on fitting. 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/JW 29.10.23. SIGNATURES DATE REMARKS MR. JOHNSON 31.10.23 Agreed. CJ. MR. B. JOHNSON 31.10.23 Agreed. BJ. MR. ROYCE 20.10.23 Agreed. FHR. MR. WORMALD 4.10.23 Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE 10.10.23 Agreed. Rg.{Mr Rowledge} MR. DAY 10.10.23 Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY 4.10.23 Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD 4.10.23 Agreed. EP.{G. Eric Platford - Chief Quality Engineer} Springfield also anneal and slightly larger and more eccentric grinding. ref. EP{G. Eric Platford - Chief Quality Engineer}14/H4.10.23 MR. ELLIOTT 15.10.23 Agreed. E.{Mr Elliott - Chief Engineer} MR. NORTHEY 15.10.23 Agreed. PN.{Mr Northey} MR. HIVES 30.10.23 Agreed. E.Hives. | ||