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 those by Woodheads for the 40/50 and Goshawk models.
| Identifier | ExFiles\Box 172\1\ img032 | |
| Date | 29th December 1922 | |
| R R 755 (S H) (S.H. 157, 20-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2807. ORIGINAL COMPLETED 24.4.23. STANDARDISATION of CHASSIS PARTS. Date 29.12.22 X No. 4419 Description of Parts. 40/50 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. 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..........£....... Series..........£....... Storekeeper advised re above: Storekeeper's Signature. Signature of Exp. Dept. that above is correct. E.{Mr Elliott - Chief Engineer} Hives. Weight of Old Part. Cost of Old Part. £ ----- Weight of New Part. Cost of New Part. £ ----- Difference per Car. £ ----- Difference per Car. £ ----- Signature of Mr. DELOOZE that above is correct. MY/JW 8.1.23. SIGNATURES | DATE | REMARKS Mr. JOHNSON 16.4.23 Agreed. BJ. Mr. B. Johnson. 26.4.23 Agreed. CJ. Mr. ROYCE 20.4.23 Agreed. FR. Every care should be given to training the heat treatment men so that we may assume that Hs{Lord Ernest Hives - Chair} M/W tests will be a fair one & Mr. WORMALD 11.4.23 Agreed. Wo. by this means get a better average life from the new material. K.{Mr Kilner} Mr. BARRINGTON Mr. Rowledge. 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} | ||