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 road springs made by Firths to replace Woodheads.
| Identifier | ExFiles\Box 52\2\ Scan084 | |
| Date | 26th April 1923 | |
| R R 755 (5 M) (S.H. 187, 20-8-20) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2807. X4429 COMPLETED 26.4.23. STANDARDISATION of CHASSIS PARTS. Description of Parts. 40/50HP and GOSHAWK. ROAD SPRINGS MADE BY FIRTHS IN PLACE Of WOODHEADS. Origin. To ensure constant supply of springs. Experimental Test Report. Experiments on the bumping rig with 20 HP. proved that the average life of the latest springs supplied by Firths was equal to Woodheads. We also recommend changing to Firths springs on the 40/50 HP. Road Test Report. Set of Firths springs run 6800 miles on 7-G-11. No failures. No road tests on 40/50. First set just fitted to a car. X No. 12.22 4429 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.........£....... Series.........£....... Signature of Exp. Dept. that above is correct. K. {Mr Kilner} Hives Weight of Old Part. Cost of Old Part. £ Weight of New Part. Cost of New Part. £ Difference per Car. Difference per Car. £ Storekeeper advised re above: Storekeeper's Signature. Signature of Mr. DELOOZE that above is correct. My/IW 9.1.23. SIGNATURES DATE | REMARKS Mr. JOHNSON | 16.4.23 | 26ap Johnson agreed. Agreed. BJ. Mr. ROYCE | 20.4.23 | Agreed. FHR. Every care should be given to obtaining the best road springs possible. assumed Hs. {Lord Ernest Hives - Chair} Mr. Hall and BY. {R.W. Bailey - Chief Engineer} Consider Mr. WORMALD | 11.4.23 | Agreed. Wor. {Arthur Wormald - General Works Manager} Firth's average better than Woodhead's. Mr. BARRINGTON | 1.1.23 | Agreed. Rg. {Mr Rowledge} Mr. DAY | | Mr. BAILEY | 30.12.22 | Agreed. BY. {R.W. Bailey - Chief Engineer} Mr. PLATFORD | 29.12.22 | Agreed. EP. {G. Eric Platford - Chief Quality Engineer} Consider careful tests necessary before changing over. Mr. NORTHEY | 11.1.23 | Agreed. PN. {Mr Northey} | ||