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 the Associated Equipment Co. Ltd. regarding a scheme for preventing gearbox dog clutches from disengaging.
| Identifier | ExFiles\Box 94\2\ scan0020 | |
| Date | 20th August 1936 | |
| 8328 THE ASSOCIATED EQUIPMENT CO LTD TELEPHONE: SOUTHALL 2424 (17 LINES) SOUTHALL MIDDX TELEGRAMS: "VANGASTOW SOUTHALL" YOUR REF. Hs{Lord Ernest Hives - Chair}/Gry.{Shadwell Grylls}4/KW OUR REF. C.E./PMW P3 Gearbox 20th August, 1936. Messrs. Rolls-Royce Ltd., DERBY. For the attention of Exptl. Dept. Dear Sirs, With reference to your letter of the 19th instant, I am afraid we have no special scheme for preventing gearbox dog clutches from disengaging. The point I mentioned to Captain Eyston was the advisability of having as long a spline as possible on the sliding gear so as to prevent any wobble action, also that we had proved the desirability of extending the splines under the dog clutches. The attached drawing of a third speed gear I think will indicate my point, i.e. with the extended portion, marked in red, the dogs will keep in engagement, but if this were removed they would disengage. I presume you are quite conversant with such methods. Yours faithfully, FOR THE ASSOCIATED EQUIPMENT COMPANY LTD. G.J.RACKHAM. CHIEF ENGINEER. ENCLOSURE CUSTOMERS' VEHICLES ARE BROUGHT ON TO OUR PREMISES, DRIVEN BY OUR STAFF, AND STORED FOR REPAIRS AT CUSTOMERS' OWN RISK AGAINST DAMAGE HOWSOEVER CAUSED. | ||