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 for the 20 HP model fitted with 4-wheel brakes and a 4-speed gearbox.
| Identifier | ExFiles\Box 57\1\ Scan195 | |
| Date | 10th August 1925 | |
| RR 755 (10H) (SL391 2-11-23) MP 281297 completed 15-9-25 STANDARDISATION of CHASSIS PARTS. Date 10.8.25. Description of Parts. 20 HP. CHASSIS FITTED WITH 4-WHEEL BRAKES - 4-SPEED GEARBOX. Origin. To improve design. X No. 5770 Drawing No. Part List Experimental Test Report. The design follows the 40/50 HP. A car identical to production cars is on its way to France for 10,000 miles test. Road Test Report. Run on 9-G-111 10,000 miles in France. Chief troubles were - Failure of front springs and servo gears rattling. Since then springs have been modified and lubrication to servo gears improved, also leverage to brakes reduced. 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 Weight of Old Part. Cost of Old Part. £ Weight of New Part. Cost of New Part. £ Difference per Car. Difference per Car. £ 120-13-0 increase. Signature of Mr. De LOOZE that above is correct. CMJ/PWB 19/9/25 Cost of Parts in Works which will be scrapped if commenced on:- Series......... £......... Series......... £......... Series......... £......... SIGNATURES DATE REMARKS MR. JOHNSON 14.9.25 Agreed Johnson MR. B. JOHNSON 15.9.25 agreed MR. ROYCE 18.8.25 Agreed. FHR. MR. WORMALD 10.8.25 Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE 10.8.25 Agreed. Rg.{Mr Rowledge} MR. DAY 12.8.25 Agreed. Da.{Bernard Day - Chassis Design} MR. BAILEY 8.9.25 Agreed. BY.{R.W. Bailey - Chief Engineer} MR. PLATFORD 10.8.25 Agreed, as I take it there is no alternative. We must be in a position if necessary to make alterations 'on test' or even after delivery. MR. ELLIOTT 17.8.25 Agreed. E.{Mr Elliott - Chief Engineer} MR. NORTHEY 14.8.25 Agreed. PN.{Mr Northey} MR. HIVES 10.9.25 Agreed. E.Hives. [STAMP: CHASSIS DEPT.] [STAMP: RECEIVED] | ||