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 front springs, brackets, and shackles to suit front wheel brakes.
| Identifier | ExFiles\Box 171\3\ img236 | |
| Date | 12th May 1924 | |
| RR 755 (10M) (SL391 2-11-23) MP 281297 COMPLETED 5.6.24. STANDARDISATION of CHASSIS PARTS. Date 12.5.24. Description of Parts. FRONT SPRINGS, BRACKETS, AND SHACKLES. X No. 2628 Origin. To suit front wheel brakes. Drawing No. Part List Experimental Test Report. The front springs are made by Firths - they are 43 1/4" long. The Spring is anchored at the rear end and shackled in front. Front springs 25% stiffer than present standard. Road Test Report. Run 10,000 miles in France on 98-NK. Run 4500 miles in France on 9-PK. Run on 35-PK, 92-NK, and 46-PK in England a total of 6700 miles - no trouble and no spring failures. Run 250 hours on bumping tests - results better than standard. [Options] A Scrap and replace at all costs, including Chassis already delivered to customers. X 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. £ 3. 2. 8 Weight of New Part. Cost of New Part. £ 6. 6. 4 Difference per Car. Difference per Car. £ 3. 3. 8 increase. Cost of Parts in Works which will be scrapped if commenced on: Series.......£....... Series.......£....... Series.......£....... Signature of Mr. De LOOZE that above is correct. 2.6.24 My/Rns. SIGNATURES | DATE | REMARKS MR. JOHNSON | 4.6.24 | Agreed. C. Johnson. MR. B. JOHNSON | 3.6.24 | Agreed. B.J. MR. ROYCE | 24/5/24 | Agreed F.H.R. MR. WORMALD | 13.5.24 | Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE | 13.5.24 | Agreed. Rg.{Mr Rowledge} MR. DAY | 14.5.24 | Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY | 13.5.24 | Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD | 13.5.24 | Disappointing for good front springing. If essential for front wheel brake, must agree. MR. ELLIOTT | 16/5/24 | Agreed A.E. MR. NORTHEY | 13.5.24 | Agreed. PN.{Mr Northey} MR. HIVES | 2.6.24. | Agreed. E.{Mr Elliott - Chief Engineer} Hives. [STAMPED IN CENTRE: APPROVED] | ||