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 Experimental Department to Vandervell Products Ltd. detailing proposed dimensional modifications for rocker bush EB.4309.
| Identifier | ExFiles\Box 115\2\ scan0433 | |
| Date | 25th March 1939 | |
| 1020 c. By/CS. ɣ Experimental Dept. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}2/MH.{M. Huckerby} 25th. March, 1939. Messrs. Vandervell Products Ltd., Western Avenue, Park Royal, LONDON, W.3. For the attention of Mr. Johnson. Dear Sirs, In accordance with our discussion and the several points you raised in regard to the various rocker bushes you are producing for us, the following modifications have been decided upon. Bush EB.4309. Regarding the length of the bush, the present dimensions are 1.373 and in line with your request have increased this limit to -10. On checking up the rocker drawings we find they are 1.373, therefore in order that the bush cannot stand proud when pressed in, we propose that the bush dimension should now be 1.371 -10. We have marked up the print you left with us to the above dimension. | ||