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 Firth's Crown Steel car engine exhaust valves.
| Identifier | ExFiles\Box 6\7\ 07-page062 | |
| Date | 23th August 1929 | |
| No. TEN REVISED (Date of last Alt.) Alt. No. & Date. X5230. COMPLETED 27.11.29. STANDARDISATION of CHASSIS PARTS. Date 23. 8. 29 No. E.T.T.A Handwritten: X5230 K7230 Description of Parts: Firth's Crown Steel Car engine exhaust valves. Origin: To reduce exhaust valve trouble. Experimental Test Report: We have proved this steel out on the R engine. It is better than any thing we have previously tried. These valves have also run 250 hours on 'P' engines. Road Test Report: [blank] [Table of Costs] 40/50 HP. Cost of Old Part: £ 1.18. 3d. Cost of New Part: £ 2. 5.11d. Difference per Car: £ - . 7. 8d. inc. 20 HP. Cost of Old Part: £1.12.3d. Cost of New Part: £1.19.11d. Difference per Car: £ - . 7. 8d. inc. [Right hand side box] 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. Cost of Parts in Works which will be scrapped if commenced on :- Series....... E...... Series....... E...... Series....... E...... Signature from Cost Dept. that above is correct: G/R016.11.29 Wor.{Arthur Wormald - General Works Manager}G19.11.29. [Approval Table] INITIAL | DATE | REMARKS Sg.{Arthur F. Sidgreaves - MD} | 19.11.29 | Agreed Sg.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 26. 8. 29 | Agreed FHR. Also modify for cooler valve. WOR.{Arthur Wormald - General Works Manager} | 23. 8. 29 | Agreed. Important. Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 26. 8. 29 | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 26. 8. 29 | Agreed By.{R.W. Bailey - Chief Engineer} BY.{R.W. Bailey - Chief Engineer} | 14. 9. 29 | Agreed, if tested out O.K. for valve tappet and clearances on cars.EP.{G. Eric Platford - Chief Quality Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 26. 8. 29 | Agreed AE. E.{Mr Elliott - Chief Engineer} | 28. 8. 29 | Agreed PN.{Mr Northey} PN.{Mr Northey} | 26. 8. 29 | Agreed C. CWB. | 23. 8. 29 | Agreed Hs.{Lord Ernest Hives - Chair} HS.{Lord Ernest Hives - Chair} | | [Green Stamp Text: 40/50 H.P. CHASSIS] | ||