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 54\3\ Scan157 | |
| Date | 12th May 1924 | |
| RR 755 (10H) (SL391 2-11-23) MP 281297 COMPLETED 5.6.24. STANDARDISATION of CHASSIS PARTS. Date 12.5.24. X No. 2628 (Handwritten: U6429) Drawing No. Part List Description of Parts: FRONT SPRINGS, BRACKETS AND SHACKLES. Origin: To suit front wheel brakes. Experimental Test Report: The front springs are made by Firths - they are 43" 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 car. Run 4500 miles in France on 9-PK car. Run on 35-PK, 92-NK and 46-PK in England to tal of 6700 miles - no trouble and no spring failures. Run 25 hrs. on bump tests - results better than standard. Weight of Old Part: Weight of New Part: Difference per Car: Cost of Old Part: £ 3. 2. 8 Cost of New Part: £ 6. 6. 4 Difference per Car: £ 3. 3. 8 increase. Action Box: 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..........£.......... Series..........£.......... Series..........£.......... Signature of Mr. De LOOZE that above is correct. 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. FHR. 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 brakes, must agree. EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT | 16.5.24 | Agreed. E.{Mr Elliott - Chief Engineer} MR. NORTHEY | 13.5.24 | Agreed. PN.{Mr Northey} MR. HIVES | 3.6.24 | Agreed. E.Hives. | ||