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).
Potential improvements to a vehicle's throttle cooling, induction, braking, and body design.
| Identifier | ExFiles\Box 15\1\ Scan036 | |
| Date | 4th July 1928 guessed | |
| contd :- -2- In the EAC.10 we ought to make a desperate attempt to return to water cooling of the throttle, even if it requires my small superheater of the water on the exhaust pipe - i.e. (steam heating of throttle) by extremely small quantity of water superheated to steam. EAC.7. seems to have less tendency to make the passengers sick. Most of the roads around here for 20 miles are extremely bad; you have no conception in England, and though I cannot judge because I am a good sailor I have the above impression, which should be tested by others. If so it is due to distribution of weight, and our effective hydraulic shock dampers. The weir induction pipe is intended for this model and should be most useful if successful from all points of view. I am working at the same carburetter as we were developing at WW. but it would seem that we must not wait for this, but make the very best of our old friend, who gives such good results excepting maximum HP at high speeds which ordinary people never use. One would expect that if we get all other features correct for maximum power we should get very passable results, and the change in the carburetters can be made at any time, as they do not affect much more than the controls. The hand brake on this back axle is of the side by side type (larger) and is a decided improvement over present Phantom for reliability, and is still another reason for pushing forward this type. The change in the back axle control shews very definitely on these rough roads, as the parallel motion of the axles leaves the transmission quite free from knocks. I hope DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} is getting a move on on the higher position of the petrol tank. It should not however delay the chassis from being built up. Have we a suitable body in hand for this. I suggest it should be a sports body, but perhaps London will wish for a covered body: also something like this Hooper body at Le CanadelHenry Royce's French residence would be a good useful type for fast covered trial runs. R.{Sir Henry Royce} | ||