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 Dunlop suggesting a steering modification to prevent 'shimmy'.
| Identifier | ExFiles\Box 45\1\ Scan345 | |
| Date | 21th October 1925 | |
| Telegraphic Address. "DUNLOPS, BIRMINGHAM." Telephone No. BIRMINGHAM CENTRAL 4108. PRIVATE BRANCH EXCHANGE. 25 LINES. BY APPOINTMENT. Registered Offices. DUNLOP HOUSE, 1, ALBANY ST.{Capt. P. R. Strong} LONDON, N.W.1. DUNLOP RUBBER Co LTD. Founders of the Pneumatic Tyre Industry. FORT DUNLOP, ERDINGTON, BIRMINGHAM. STATION: CASTLE BROMWICH. (MID.RY.) GOODS: TO DUNLOP SIDINGS, CASTLE BROMWICH. CAR ROUTE: TYBURN, FROM NEW STEELHOUSE LANE, TO FORT DUNLOP WORKS, CAR 63. WHEN REPLYING PLEASE QUOTE ON BOTH LETTER & ENVELOPE. Research Department. ALL COMMUNICATIONS TO BE ADDRESSED TO THE FIRM. Handwritten: X4050. Messrs. Rolls-Royce, Ltd. Nightingale Road, Derby. 21st October 1925. Hs{Lord Ernest Hives - Chair}/Rm{William Robotham - Chief Engineer}2/LG. Dear Sirs, Attention of Mr. Robotham. We thank you for your letter of 19th Oct., giving information as to the relative wear of British and French Dunlop tyres. On the question of shimmy, we suggest that you should try the following simple device. Cut the cross steering tube, and insert a link, say 6" long, approximately at right angles to the tube. To the centre of the link, attach the controlling arm from the steering box. To wheel. To wheel. With such an arrangement, it would be impossible for one wheel to turn the other in the same sense, if the length of the link be designed in relation to the degree of reversibility in the steering box. The greater the reversibility the longer the link would have to be. | ||