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 criticisms and modifications for bonnets on the India 3 and Twenty models.
| Identifier | ExFiles\Box 102\6\ scan0077 | |
| Date | 24th September 1928 | |
| to EV.{Ivan Evernden - coachwork} from Da{Bernard Day - Chassis Design}/Ev.{Ivan Evernden - coachwork} X5260 ORIGINAL EV{Ivan Evernden - coachwork}1/24.9.28. copy to BJ. C. Hs.{Lord Ernest Hives - Chair} RE BONNETS. X5260 INDIA 3. & TWENTY. We send herewith N.Sch.2723. shewing comparisons between various 40/50 & 20.HP. bonnets and dashes, and also a modified bonnet for India 3. and the "Twenty" N.Sch.2724. Mr.Royce has criticised the Geoffrey Smith Type of raised bonnet as is standardised for the Twenty, and is fitted to 12.G.4. on the following points:- (1) The slope of the top hinge is too great. (2) The slope of the side hinge is not enough. (3) The shape of the top of the dash,pigeon-chested.in appearance as it is, needs a larger top radious. On N.Sch. 2724. we shew a revised bonnet which Mr.Royce would like to replace the one already standardised as soon as possible. We are communicating with Hoopers, with a view to getting the scuttle of the second India 3. altered, and we will inform Derby in the course of a few days whether they can fit this new bonnet to that car, 14.G.4. We suggest also that Sales might wish to fit up a car with this bonnet, and arrange for one of their bodies which might be available to be altered to suit, at the same time finding out from Derby how far they are commited for material. The third India 3. chassis should be fitted with this bonnet. EV.{Ivan Evernden - coachwork} | ||