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 a lightened flywheel and clutch.
| Identifier | ExFiles\Box 171\1\ img003 | |
| Date | 10th December 1925 | |
| RR 755 (10M) (SL391 2-11-23) MP 281297 ORIGINAL COMPLETED 14.1.26. STANDARDISATION of CHASSIS PARTS. Date 10.12.25 X No. 8300 Drawing No. Part List Description of Parts. LIGHTENED FLYWHEEL AND CLUTCH. Origin. To reduce weight, cost and to improve design. Experimental Test Report. The saving in weight is 28 lbs. There should be a saving in cost. The design is modified so that the clutch should stop more reliably. The wear on the fabric should be even. Road Test Report. Run 10,000 miles on 8-EX car - no troubles. Fitted to 11-EX, 46-PK and 10-EX - run total of 6800 miles. We have had no trouble with these clutches. It is not anticipated that clutch jaggers will be cured by this clutch. A Scrap and replace at all costs, including Chassis already delivered to customers. B Scrap and replace on Chassis in works. C [X] 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. 0 Weight of New Part. Cost of New Part. £18. 14. 6d. Difference per Car. Difference per Car. 7. 6d. saving. Cost of Parts in Works which will be scrapped if commenced on:- Series........ £......... Series........ £......... Series........ £......... Mr. Matley Signature of [illegible] that above is correct. My/Rns. 12.1.26 SIGNATURES | DATE | REMARKS MR. JOHNSON | 13.1.26 | Agreed. C.Johnson. MR. B. JOHNSON | 13.1.26 | Agreed. B.J. MR. ROYCE | 18/12/25 | Agreed FHR MR. WORMALD | 10.12.25 | Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE | 11.12.25 | Agreed. Rg.{Mr Rowledge} MR. DAY | 12.12.25 | Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY | 10.12.25 | Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD | 10.12.25 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT | 10/12/25 | Agreed QE. Recommend further lightening of this part. MR. NORTHEY | 11.12.25 | Agreed. PN.{Mr Northey} MR. HIVES | 12.1.26 | Agreed. E.Hives. | ||