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 a 14/52 axle ratio for chassis parts.
| Identifier | ExFiles\Box 66\4\ scan0367 | |
| Date | 28th November 1927 | |
| RR 755 REVISED (IOH) (DE 649 9-12-26) BM. 2/1187. L8350 COMPLETED 23.12.27 STANDARDISATION of CHASSIS PARTS. Description of Parts: 14/52 AXLE RATIO. Date 28.11.27 X No. 8350 Drawing No. 1725 Part List Origin: To increase performance. Experimental Test Report: We frequently receive complaints of lack of acceleration. This becomes more important as the amount of traffic increases. The 14/52 axle ratio was standard on Silver Ghost and is used on U.S.A. Phantom cars. It is recommended for heavy cars only. Road Test Report: The gears will be identical to those used on the Silver Ghost. There is very marked increase in acceleration with this axle ratio. 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. INITIAL | DATE | REMARKS BJ. | 23.12.27 | agreed R.{Sir Henry Royce} | 1.12.27 | Agreed. FHR. WOR.{Arthur Wormald - General Works Manager} | 29.11.27 | Agreed. Wor.{Arthur Wormald - General Works Manager} RG.{Mr Rowledge} | 29.11.27 | Agreed. RG.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 3.12.27 | Agreed. Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 5.12.27 | Agreed. BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 30.11.27 | Not agreed - engine harshness, roughness and noises are accentuated. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 1.12.27 | Agreed. E.{Mr Elliott - Chief Engineer} PN.{Mr Northey} | 29.11.27 | Agreed. PN.{Mr Northey} CWB. | 8.12.27 | Agreed. CWB. HS.{Lord Ernest Hives - Chair} | 28.11.27 | Agreed. Hs.{Lord Ernest Hives - Chair} | ||