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 to Adamant Engineering Co. Ltd. requesting a modified double tooth gear for a Bentley.
| Identifier | ExFiles\Box 153\2\ scan0004 | |
| Date | 6th February 1936 | |
| X1300 Exptl. Dept. Hs{Lord Ernest Hives - Chair}/FJH.{Fred J. Hardy - Chief Dev. Engineer}10/KW. 6th February, 1936. Commdr. Matravers, The Adamant Engineering Co.Ltd., Dallow Road, Luton. Dear Sir, We wish to have another 1.7/16" double tooth gear for a Bentley, similar to the one you previously supplied to us but if possible with two modifications to reduce sponginess in the gear. The trouble is that, as usual, we want the gear as soon as possible and, if the modifications would delay the job unduly, we would have to be satisfied with a gear identical to the previous one. The modifications we would like are as follows :- (1) The helix angle increased in the ratio of 9 : 8 so that we can use an 8.000" pendulum lever instead of the 9.000" one we are at present using with this gear. (2) The rockershaft increased in dia. from 1.000" to about 1.187" with a correspondingly larger splined end. Will you please let us know how soon you can let us have (a) a gear identical to the previous one and (b) a gear with the modifications mentioned above. | ||