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 a slipper wheel fitted with dowel pegs to improve reliability.
| Identifier | ExFiles\Box 66\4\ scan0039 | |
| Date | 10th December 1925 | |
| RR 755 (10H) (DB{Donald Bastow - Suspensions}130 12-9-24) MS 301225 X. 8300 COMPLETED 22.12.25 STANDARDISATION of CHASSIS PARTS. Date 10.12.25 Description of Parts: SLIPPER WHEEL FITTED WITH DOWEL PEGS. Origin: To improve reliability. Experimental Test Report: We have had cases of the bolts breaking holding the slipper wheels together. The dowel pegs will overcome this. BJ Road Test Report: Fitted to 8-EX car - run 10,000 miles in France. Fitted to 44-PK, 11-EX and 10-EX - Total miles 6400. Weight of Old Part. Cost of Old Part. £ 2. 8. 11d. Weight of New Part. Cost of New Part. £ 2. 11. 7d. Difference per Car. Difference per Car. £ 2. 8d. increase. Signature of Mr. De LOOZE that above is correct. My/Rms. 16.12.25 X No. 8300 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.........£......... SIGNATURES | DATE | REMARKS MR. JOHNSON | 22 XII | agreed MR. B. JOHNSON | 22-12 | agreed MR. ROYCE | 18.12.25 | Agreed. FHR. MR. WORMALD | 11.12.25 | Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE | 11.12.25 | Agreed. Rg.{Mr Rowledge} MR. DAY | 12.12.25 | Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY | 11.12.25 | Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD | 11.12.25 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer} MR. ELLIOTT | 14.12.25 | Agreed. E.{Mr Elliott - Chief Engineer} MR. NORTHEY | 11.12.25 | Agreed. PN.{Mr Northey} MR. HIVES | 21.12.25 | Agreed E Hives | ||