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 a 20 HP car with 4-wheel brakes and 4-speed gearbox.
| Identifier | ExFiles\Box 172\1\ img070 | |
| Date | 10th August 1925 | |
| ORIGINAL RR 756 (10M) (SL391 2-11-23) MP 281297 STANDARDISATION of CHASSIS PARTS. Description of Parts. 20 HP. CHASSIS FITTED WITH: 4-WHEEL BRAKES - 4-SPEED GEARBOX. Origin. To improve design. 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. 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. Weight of Old Part. Weight of New Part. Difference per Car. Cost of Old Part. £ Cost of New Part. £ Difference per Car. £ 120-13-0 increase Cost of Parts in Works which will be scrapped if commenced on:- Series......... £....... Series......... £....... Series......... £....... Signature of Mr. De LOOZE that above is correct. 19/9/25 SIGNATURES, DATE, REMARKS MR. JOHNSON MR. B. JOHNSON MR. ROYCE MR. WORMALD MR. ROWLEDGE MR. DAY MR. BAILEY MR. PLATFORD MR. ELLIOTT MR. NORTHEY MR. HIVES | ||