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).
Modification to the 20 HP Rear Axle Casing to improve strength.
| Identifier | ExFiles\Box 172\1\ img028 | |
| Date | 7th March 1923 | |
| R R 755 (6 H) (S R 268, 19-9-21) G 2434 COMPLETED 28.3.23. STANDARDISATION OF CHASSIS PARTS. Description of Parts. ORIGINAL Modification to 20 HP. Rear Axle Casing. Origin. To improve the strength. Experimental Test Report. This modification is the outcome of the failure of the 20 HP. axle casing in Switzerland when the car skidded against a milestone. The axle casing has been slightly increased in thickness and the aluminium cover has been replaced by a steel one spigoted in a similar manner to the 40/50 H.P. Signature of Exp. Dept. that above is correct. E.Hives. Road Test Report. No road tests yet. The design has not been altered except thicker material and different material for the cover. We are anxious that this alteration should come on as soon as possible without scrap. Road tests on Expl: Cars will be completed before any of these axles are delivered. Date 7.3.23. X No.4256 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. Weight of Old Part. Cost of Old Part. £ 3. 1. 9 Weight of New Part. Cost of New Part. £ 3. 10. 9 Difference per Car. Difference per Car. £ 9. 0 increase. Signature of Mr. De LOOZE that above is correct. My/JW 15.3.23. SIGNATURES DATE REMARKS Mr. JOHNSON 19.3.23 Appr. C.Johnson. Mr. B.Johnson. 20.3.23 Agreed. BJ. Mr. ROYCE 28.3.23 Agreed FHR Mr. WORMALD 7.3.23 Agreed. Wor.{Arthur Wormald - General Works Manager} Mr. BARRINGTON (struck through) Mr. ROWLEDGE. 7.3.23 Agreed. Rg.{Mr Rowledge} Mr. DAY 9.3.23 Agreed so long as testing is begun as soon as possible, and completed before delivery of cars with this modification. Da.{Bernard Day - Chassis Design} Mr. BAILEY 7.3.23 Agreed. BY.{R.W. Bailey - Chief Engineer} Mr. PLATFORD 7.3.23 Agreed. EP.{G. Eric Platford - Chief Quality Engineer} Mr. NORTHEY 8.3.23 Agreed. PN.{Mr Northey} | ||