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).
Proposal for fixing brake brackets to axle tubes using bolts and solder instead of counterscrews and brazing.
| Identifier | ExFiles\Box 171\3\ img086 | |
| Date | 1st March 1921 | |
| R R 755 (S H) (S.H. 187, 20-8-20) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2807. ORIGINAL COMPLETED 22.3.21 STANDARDISATION of CHASSIS PARTS. Date 1.3.21 X No. 4063 Drawing No. G.7089 Part List. G.7089 Description of Parts. Fixing of brake brackets on to axle tubes by means of bolts and solder in place of counter screws and brazing. Origin. To maintain the benefit of the heat treatment of the tubes which the brazing nullifies. Experimental Test Report. This method has been used on Armoured Car Axle Tubes since 1916 - more than 200 sets have been fitted in this way; we have had no complaints. Road Test Report. On experimental car an axle has run 500 miles and is still running. The mileage on Armoured Cars is many times 10,000 miles. 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 Exp. Dept. that above is correct. E.{Mr Elliott - Chief Engineer} Hives. Weight of Old Part. Cost of Old Part. £0 - 4 - 10 1/2. Weight of New Part. Cost of New Part. £0 - 6 - 1 Difference per Car. Difference per Car. £0 - 2 - 5 Increase Signature of Mr. DELOOZE that above is correct. D/Rz 5-3-21 SIGNATURES | DATE | REMARKS Mr. JOHNSON | 9.3.21 | Agreed. C. Johnson. Mr. B. Johnson | 10.3.21 | Agreed. B. Johnson. Mr. ROYCE | 21.3.21 | Agreed. FHR Mr. WORMALD | 7-3-21 | Agreed. W. Mr. BARRINGTON | 2.3.21 | Agreed. BN.{W.O. Bentley / Mr Barrington} Mr. DAY | 2.3.21 | Agreed. Da.{Bernard Day - Chassis Design} Mr. BAILEY | 3.3.21 | Agreed - it will considerably strengthen axle tube omitting brazing. Mr. PLATFORD | 2.3.21 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} Mr. NORTHEY | 5.3.21 | Agreed. PN.{Mr Northey} Sent to R.R. Inc. | ||