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 Ferodo Limited detailing the coefficient of friction and wear characteristics of an experimental brake lining.
| Identifier | ExFiles\Box 26\4\ Scan299 | |
| Date | 29th April 1926 | |
| [Handwritten at top: X719 43409] FERODO LIMITED. WIRES: "FRICTION, CHAPEL-EN-LE-FRITH". TELEPHONES: 19, 20 & 21 CHAPEL-EN-LE-FRITH. (3 LINES) Depots. LONDON 222, TOTTENHAM COURT ROAD, W.1. BIRMINGHAM 202, CORPORATION STREET. MANCHESTER 32, CATHEDRAL STREET. LIVERPOOL 1-3, BERRY STREET. GLASGOW 65, BOTHWELL STREET. BRISTOL 19, PARK STREET. BELFAST 158, NORTH STREET. LEEDS 25, HUNSLET ROAD. BRIGHTON 84, QUEEN'S ROAD. MESSRS T.S.ARMSTRONG & CO LTD, NEWCASTLE ON TYNE WORSWICK STREET, PILGRIM STREET. MESSRS HASLAM & STRETTON LTD, CARDIFF. 11, WINDSOR PLACE. MR A.J.CRESWICK, SHEFFIELD. GATEFIELD. MESSRS F.W.HARRIS & CO, STOKE ON TRENT MOORLAND ROAD, BURSLEM. MR SIDNEY HILL, COVENTRY. 1, QUEEN'S ROAD. NORTHERN MILL & MINE FURNISHING CO, CARLISLE ANNETWELL STREET. CODES:- 5TH EDITION A.B.C. LIEBER'S. MARCONI INTERNATIONAL. WESTERN UNION FIVE LETTER EDS. Regd Office & Works. SOVEREIGN MILLS, CHAPEL-EN-LE-FRITH. VIA STOCKPORT. All Communications to be addressed to the Company and not to Individuals PLEASE ADDRESS YOUR REPLY. DEPT. REF. FJF:AML YOUR REF. Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}3/LG April 29th, 1926 Messrs Rolls-Royce Limited, Experimental Department, D E R B Y. Dear Sirs: In reply to your letter of the 27th instant, regarding coefficient of friction of the experimental brake lining containing lubricant. Ferobestos should furnish 0.25 ; Ferodo Bonded Asbestos 0.18 rising to 0.25 . The lower value will obtain until the lining is well worked in. In regard to wear, we consider it will be rather less than with the standard material, notwithstanding the increased unit pressure. We are doing everything possible to get your clutch plate lined with the least possible delay, and will advise delivery date by a later post. Yours faithfully, F E R O D O L I M I T E D F.{Mr Friese} J.{Mr Johnson W.M.} Field per Chief Engineer. OUR FOREIGN FACTORIES. FRANCE: LA{L. A. Archer} SOCIÉTÉ ANONYME FRANÇAISE DU FERODO, 2 RUE DE CHATEAUDUN, PARIS. U.S.A.: FERODO & ASBESTOS, INC., NEW BRUNSWICK, NEW JERSEY. GERMANY: DIE DEUTSCHE FERODO GESELLSCHAFT, (TOPKEN & CO) GROSSBEEREN STRASSE, 126, BERLIN, MARIENDORF. | ||