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 specifications for a new radiator, bonnet, and dash for project J.S.
| Identifier | ExFiles\Box 105\1\ scan0175 | |
| Date | 17th December 1931 | |
| COPY. X5250. TO BY.{R.W. Bailey - Chief Engineer} FROM EV.{Ivan Evernden - coachwork} EV{Ivan Evernden - coachwork}1/17.12.31. (X5250 (X5260 (X5500 COPY TO HS.{Lord Ernest Hives - Chair} RE RADIATOR BONNET AND DASH. J.S. We are about to set out the shape of the bonnet and radiator for J.S. and need some information from you by return. The top tank shape of the radiator will be the one now used and not the shallowed one originally done for 18.G.4. The bonnet will have concealed hinges and be lengthened and widened very similar to the one already sent to you for the 25 HP. N.Sch.3381. On 20.G.4. which was here yester-day we noticed the rubber rest material. We shall wish to use this as originally done for J.3. last year, unless HY.{Tom Haldenby - Plant Engineer} has made some further tests he has promised to do last Winter. If possible we would like you to post to us by the weekend a drawing of the latest dropped and shallower radiator, and also some drawing shewing the positions of the hinges on the back of the radiator. It appeared that on 20.G.4. that the side hinge moulding had been raised to reduce the amount of top tank protruding above the top of the bonnet. We admired this and want to repeat it. On the first car we intending to use a standard radiator top tank and shutter mechanism but this will be followed by a scheme for a loose shell design/oval shutters. -1- | ||