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).
Design and details of a body subframe for India across several schemes.
| Identifier | ExFiles\Box 104\3\ scan0003 | |
| Date | 21th April 1925 | |
| ORIGINAL X5380 TO EV.{Ivan Evernden - coachwork} FROM DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} SECRET. DA{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork}1/21.4.25. Copy to - Gd. WOR.{Arthur Wormald - General Works Manager} HS.{Lord Ernest Hives - Chair} INDIA. re. BODY SUBFRAME. We send herewith N. scheme 1986/7/8 shewing details of the body subframe for India. Ingeneral the design follows very closely that of EAC. 2. N. scheme 1986. This drawing shews the general layout of the body subframe and details of the side members. We have shewn it on the present standard Goshawk instead of on India so that we can let the coachbuilders see this drawing if necessary, but it will go on an India chassis having a wider dash, side levers, 56" track, and revised steering position, with the rear joggle moved back one inch. The moment of inertia of the section of the subframe is slightly greater than the original one as fitted to GH-68. due to the increased span resulting from moving the forward support nearer to the dash. N. scheme 1987. We shew on this drawing the design of the forward support. Again the design follows that of EAC. 2. and several of the same pieces are used. It is essential that the special hard rubber of the shock damper Insulator Co. be used, and Derby and EV.{Ivan Evernden - coachwork} will need to experiment to determine the correct value of the spring. N. scheme 1988. This is the design of the rear support and of the rectangular cross members. Derby will please set out the riveting of the .750" angle to the subframe web for the support of the floorboards. In a short while we shall send you designs for the heelboard cross member and the sloping footboard support. For the present the standard dash can be widened by a simple increase in size but later on we shall send you a design of a hollow dash of increased rigidity. We think that one of these subframes should be put in hand as soon as possible for 'D' steering and we will arrange with Sales to obtain either a cabriolet or an open touring car for the test. The frame should be made up by welding for this first experiment. DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} | ||