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 regarding tests on F.B.A. type brake lining material for 20/25 HP cars.
| Identifier | ExFiles\Box 141\1\ scan0178 | |
| Date | 19th August 1936 | |
| X1180 All Communications to be addressed to the Company. FERODO LIMITED FERODO REGD. TRADE MARK. BRAKE & CLUTCH LININGS CHAPEL-EN-LE-FRITH, STOCKPORT, ENGLAND. TELEPHONE: 19 CHAPEL-EN-LE-FRITH (4 LINES) TELEGRAMS: FRICTION, PHONE, CHAPEL-EN-LE-FRITH. CODES: WESTERN UNION FIVE LETTER EDITION, BENTLEYS COMPLETE & 2ND PHRASE, MARCONI INTERNATIONAL, LIEBERS CODE, LIEBERS LATEST CODE, A.B.C. 5TH & 6TH EDITIONS. Depots:- LONDON 222, TOTTENHAM COURT RD W. 1. ABERDEEN 26, GUILD STREET. BELFAST 8, 10 & 12, MONTGOMERY ST BIRMINGHAM 198, CORPORATION ST BRIGHTON 84, QUEEN'S ROAD. BRISTOL 118, VICTORIA STREET. CARDIFF 39, CHARLES ST DUBLIN 120, UPPER ABBEY ST GLASGOW 70, WATERLOO ST LEEDS 25, HUNSLET RD LIVERPOOL 1-3, BERRY STREET. MANCHESTER 32, CATHEDRAL ST NEWCASTLE-ON-TYNE WORSWICK CHAMBERS, 10, WORSWICK ST OFF PILGRIM ST A.F.M. 19th August 1936. YOUR REF. Hs{Lord Ernest Hives - Chair}/AFM.{Anthony F. Martindale}11/MA. OUR REF. JNL/IS. A.{Mr Adams} F; Martindale Esq., Messrs Rolls-Royce Ltd., Derby. Dear Mr Martindale, I thank you for your letter of August 12th, asking for low coefficient of friction F.B.A. type lining with a zinc bonding - enough for four 20/25 h.p. cars. This material is actually present day Ferodo B.Z., and as it is one of our standards, it does not have a special number. I have been making careful examination of the coefficient of friction of this material under all possible conditions, i.e. possible of reproduction here on our test plant, and find that in no case is it higher than .355, and in no case lower than .318 throughout the temperature range, speed range and usual unit pressure range. We have also been endeavouring to cause it to squeal but have been unable to produce even the faintest noise. With this encouragement I have now let your letter go forward as an order to the mill to produce the quantities requested. Yours very truly, Longley | ||