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 chassis with 4-wheel brakes and a 4-speed gearbox.
| Identifier | ExFiles\Box 172\1\ img069 | |
| Date | 10th August 1925 | |
| RR 755 (10H) (SL391 2-11-23) MP 281297 ORIGINAL COMPLETED 15.9.25. STANDARDISATION of CHASSIS PARTS. Date 10.8.25. Drawing No. 5770 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 gear rattling. Since then, springs have been modified, and lubrication to servo gears improved, also leverage to brakes reduced. 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 Difference per Car. £ 120-13-0 increase Signature of Mr. De LOOZE that above is correct. Clly/Rus. 19.9.25. SIGNATURES, DATE, REMARKS MR. JOHNSON, 14.9.25, Agreed. C.Johnson. MR. B. JOHNSON, 15.9.25, Agreed. B.J. MR. ROYCE, 18/8/25, Agreed F.H.R. MR. WORMALD, 10.8.25, Agreed. Wor.{Arthur Wormald - General Works Manager} MR. ROWLEDGE, 12.8.25, 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 CE MR. NORTHEY, 14.8.25, Agreed. PN.{Mr Northey} MR. HIVES, 10.9.25, Agreed. E.Hives. [STAMPED: CLASS A] | ||