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 regarding 'shimmy' (wheel wobble), comparative tyre wear, and enclosing a paper entitled 'Etudes sur le Shimmy'.
| Identifier | ExFiles\Box 29\1\ Scan091 | |
| Date | 2nd October 1925 | |
| Telegraphic Address. "DUNLOPS, BIRMINGHAM." Telephone No. BIRMINGHAM CENTRAL 4108. PRIVATE BRANCH EXCHANGE. 25 LINES Registered Offices. DUNLOP HOUSE, I, ALBANY ST LONDON. N.W.I. BY APPOINTMENT 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 ROAD from 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 Messrs. Rolls Royce, Ltd. Nightingale Road, DERBY. 2 October 1925. Dear Sirs, For the attention of Mr. W.A. Robotham. We have pleasure in enclosing a paper entitled "Etudes sur le Shimmy", as promised. Will you please return this at your convenience? While the writer was at your works yesterday, the question of comparative tread wear on English and French Dunlop tyres was mentioned. As this is a matter of considerable interest to us, we should be glad if you could see your way to give us the results of any observations you have made on the point. With regard to the effect of the side-steering rod on wheel wobble, it occurs to us that useful information would be obtained by disconnecting the rod while a wobble is in progress. We should then know whether the rod merely excites, or helps to sustain the wobble. As you are aware, the geometry of the side-steering rod has been blamed by some workers, for the phenomenon. Yours faithfully, FOR THE DUNLOP RUBBER CO. LTD. A Healey. | ||