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).
Letter from S. Smith & Sons reporting on the analysis of fluid from a chassis Jackall set.
| Identifier | ExFiles\Box 139\2\ scan0398 | |
| Date | 22th October 1935 | |
| BOWERING X1166 CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY S. Smith & Sons (Motor Accessories) Ltd TELEPHONE: GLADSTONE 3333 (20 LINES) TELEGRAMS: SPEEDOFAC, PHONE, LONDON. CABLES: SPEEDOFAC, LONDON. CODES: MARCONI, COMMERCIAL, BENTLEY'S. BRANCHES AT PARIS MILAN SYDNEY WELLINGTON AGENCIES AND SERVICE STATIONS THROUGHOUT THE BRITISH EMPIRE AND IN ALL THE PRINCIPAL COUNTRIES SHOWROOMS & DEPOTS 179-185 GT. PORTLAND ST.{Capt. P. R. Strong} LONDON, W.1. 26-33, COX ST.{Capt. P. R. Strong} LIVERY ST.{Capt. P. R. Strong} BIRMINGHAM 14a, JACKSONS ROW DEANSGATE MANCHESTER 21, DRURY STREET GLASGOW DUBLIN & BELFAST CRICKLEWOOD WORKS LONDON, N.W.2. Please quote our reference: S.1. SALES DIRECTOR'S OFFICE 22nd October 1935 Messrs. Rolls Royce Ld, DERBY. Attention of Mr. W.A. Robotham Dear Sirs, CHASSIS 21-G-IV. We are now in a position to report regarding the Fluid removed from the Jackall set on the above chassis, and give you details of our findings hereunder. There appears to be only one ingredient common to the two, namely the castor oil. This differs both in condition and proportion as supplied in our Jackall Fluid. The castor oil in your sample appears to be either a much lower quality grade than we use or has become seriously degraded by use or contamination. Your sample was found to consist approximately of the following:- Low grade castor oil 70% Mineral oil 10% An unidentified solvent 20% There is, of course, no mineral oil in the Jackall Fluid. It is a well known fact that when mineral oil and rubber are in contact, there is a destructive action on the rubber. Yours faithfully, For S. SMITH & SONS (MOTOR ACCESSORIES) LD. C.W. Nichols SALES DIRECTOR | ||