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 20 inch wheels with 7 inch tyres.
| Identifier | ExFiles\Box 171\1\ img180 | |
| Date | 1st January 1930 | |
| RR 755 REVISED (10M) (DF 687 4-1-29) BM. 2/5943. COMPLETED 18.2.30. STANDARDISATION of CHASSIS PARTS. Date 1.1.30 No. 4056 Description of Parts. 20" WHEELS WITH 7" TYRES. Origin. To obtain the advantages of a "Fort" tyre without its disadvantages. Experimental Test Report. We have been doing some running with these tyres in their latest form with good results. Road Test Report. Run 10,000 miles in France on 18-EX. 1,000 miles 23-EX. 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. £ 19. 2. 10d. Weight of New Part. Cost of New Part. £ 19.12. 2d. Difference per Car. Difference per Car. £ - 9. 4d. Increase. Signature from Cost Dept. that above is correct. G/RD.11.2.30. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} INITIAL | DATE | REMARKS B.J. Sg{Arthur F. Sidgreaves - MD} | 13.2.30 | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 6/1/30 | Agreed K H Royce. WOR.{Arthur Wormald - General Works Manager} | 3.1.30 | Agreed Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 13.1.30 | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 6.1.30 | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 3.1.30 | Agreed By.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 7.1.30 | Agreed EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 4.1.30 | Agreed AE. PN.{Mr Northey} | 14.2.30 | Agreed PN.{Mr Northey} CWB. | 3.1.30 | Agreed C. HS.{Lord Ernest Hives - Chair} | 1.1.30 | Agreed. | ||