Letter from Rapson Tyre and Jack Co. Ltd. discussing excessive wear on tyres due to over-inflation during testing.
| Identifier | ExFiles\Box 39\1\ Scan148 | |
| Date | 1st August 1924 | |
| X1238 CUSTOMERS' CARS ONLY DRIVEN BY OUR STAFF AT CLIENTS' OWN RISK AND RESPONSIBILITY. TYRE & JACK MANUFACTURERS BY APPOINTMENT TO H.M THE KING. DIRECTORS: COL. R. {Sir Henry Royce} HALSEY, CHAIRMAN. F. {Mr Friese} LIONEL RAPSON, MANAGING DIRECTOR. VICE-ADMIRAL SIR LIONEL HALSEY, G.C.V.O., K.C.M.G.,C.B. CAPT. F. {Mr Friese} McKAY HAY, D.C.M. JOHN LOMAX (SECRETARY). Your Ref. Our Ref. FIR/DIM. Please Quote. RAPSON TYRE & JACK COY. LTD. Tyre Factory: NEW MALDEN SURREY Sales Dept 477, OXFORD STREET, LONDON. TYRE & JACK MANUFACTURERS BY APPOINTMENT TO H.R.H. THE PRINCE OF WALES. Telegraphic Address: RAPSONO, NEW MALDEN, SURREY. Code : BENTLEY'S Telephone : MALDEN 190, 191, 192. 1st August 1924. E.W. Hives,Esq., Messrs Rolls-Royce.Ltd., D E R B Y. Dear Mr. Hives, The last four tyres you so kindly tested on your cars in France were returned here this morning and have been examined by myself and our tyre experts. We are unanimously of the opinion that these tyres have been run at at least 10-15 lbs higher pressures than necessary for the weight of the car used, as in two instances the centre of the tyre has been worn away to such an extent that the under ply of the cord has been reached, leaving tread rubber on the shoulders of very considerable depth. It is due to the too high inflation pressures that the tyres have not flexe(Aero Engine)d sufficiently to bring the shoulders into contact with the road as the tyre rotated and incidentally, this same excessive inflation is undoubtedly the cause of the hard riding your testers complain of. Yours truly, RAPSON TYRE AND JACK COMPANY.LIMITED., F. {Mr Friese} Lionel Rapson. Managing Director. All communications to be addressed to the Company, not to individuals. | ||
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).