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 for the 20/25 HP Chassis, specifically the Low Inertia Spring Drive.
| Identifier | ExFiles\Box 103\3\ scan0024 | |
| Date | 15th January 1931 | |
| RR.788 (10H) (3-7-30) BM. 6/2571. X5020. COMPLETED 4.12.31. STANDARDISATION of CHASSIS PARTS. Date 15.1.31 Description of Parts. Low Inertia Spring Drive. Origin. To obtain more consistent results of absence of crankshaft periods and thuds. Experimental Test Report. Results of test show it to be more consistent in load. Road Test Report. Fitted to 18.G.IV. and ran 10,000 miles. There was an entire absence of crankshaft periods and thuds throughout the test. [STAMP] 20/25 H.P. CHASSIS [BOX TOP RIGHT] X No. X.5020 Drawing LOP. No. E.{Mr Elliott - Chief Engineer} 54745 Part sch. List 1334. 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. £ 5. 8. 11 Cost of New Part. £ 5-1-1 Difference per Car. £ 0.-7-10 Decrease Cost of Parts in Works which will be scrapped if commenced on:- Series..........£..... Series..........£..... Series..........£..... Signature from Cost Dept. that above is correct. [Signature GRL] 27/1/31 [Handwritten] 4/12/31' [STAMP] J.S. DEC 1931 INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 2-12-31 | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 1.2.31. | Agreed FHR. WOR.{Arthur Wormald - General Works Manager} | 19.1.31. | Agreed Wor.{Arthur Wormald - General Works Manager} C. | 20.1.31. | Agreed C. RG.{Mr Rowledge} | 19.1.31. | Agreed RG.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 21.1.31. | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 19.1.31. | Agreed BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 19.1.31. | Agreed EP.{G. Eric Platford - Chief Quality Engineer} and Mx.{John H Maddocks - Chief Proving Officer} E.{Mr Elliott - Chief Engineer} | 21.1.31. | Agreed AE. PN.{Mr Northey} | 21.1.31. | Agreed PN.{Mr Northey} HS.{Lord Ernest Hives - Chair} | | Agreed Hs.{Lord Ernest Hives - Chair} | ||