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 the thrust race for the rear axle bevel pinion.
| Identifier | ExFiles\Box 172\1\ img075 | |
| Date | 14th October 1925 | |
| RR 755 (10M) (SL391 2-11-23) MP 281297 ORIGINAL COMPLETED 30.10.25. STANDARDISATION of CHASSIS PARTS. Date 14.10.25. X No. 5350 Drawing No. Part List Description of Parts. THRUST RACE FOR REAR AXLE BEVEL PINION. Origin. To increase reliability. Experimental Test Report. We have had several cases of failure of the std. thrust races fitted to 20 HP. cars. The new proposal makes use of a New Departure type bearing of more robust proportions. See report attached to HS{Lord Ernest Hives - Chair}3/LG13.10.25. Road Test Report. Run 11,000 miles on 9-G-111. Bearing found to be in excellent condition at the end of the test. Weight of Old Part. Cost of Old Part. £ 2. 4. 9. Weight of New Part. Cost of New Part. £ 3. 0. 0 Difference per Car. Difference per Car. £ 15. 3 increase. Signature of Mr. De LOOZE that above is correct. My/Rus. 21.10.25. SIGNATURES DATE REMARKS MR. JOHNSON 30.10.25 Agreed. C. Johnson. MR. B. JOHNSON 30.10.25 Agreed. B.J. MR. ROYCE 22/10/25 Agreed FHR MR. WORMALD 14.10.25 Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE 26.10.25 Agreed. Rg.{Mr Rowledge} MR. DAY 20.10.25 Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY 14.10.25 Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD 14.10.25 Agreed. EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT 23/10/25 Agreed CE MR. NORTHEY 16.10.25 Agreed. PN.{Mr Northey} MR. HIVES 28.10.25 Agreed. E.{Mr Elliott - Chief Engineer} Hives. 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.........£......... | ||