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 disappointments and issues with the rear end and wheel carrier of the 'SS' EAC.10 chassis.
| Identifier | WestWitteringFiles\S\2April1928-June1928\ Scan027 | |
| Date | 14th April 1928 | |
| to R.{Sir Henry Royce} from Ev.{Ivan Evernden - coachwork} copy to R.{Sir Henry Royce} Hs.{Lord Ernest Hives - Chair} ORIGINAL EV{Ivan Evernden - coachwork}1/14.4.28. SECRET. EAC.IO. "SS{S. Smith}". X7600 X7400 X7380 REAR END. We are sorry to have disappointed you with our designs for the rear end of the "SS{S. Smith}" EAC.IO. Chassis, by reverting to the 20HP. type carrier. We did this with some misgivings and only after exploring all the possibilities of the present Phantom Type and the suggestion originally made on the quarter scale drawing. The scheme we eventually shewed seemed to have sufficient advantages over the others to justify our finishing it off. The Expl. Dept have complained of the Phantom Wheel Carrier not holding the wheel steady owing to the rather elastic attachment of the centre plate to the frame via the body gaurd rails. When the tank is raised in the frame the extraction of the filter does not allow of fixed horizontal bars in the body gaurd rail. Also, it prohibits the handle being between the body and the wheel for the handle fouls the tank when the tyre is deflated. Sales and "Hs{Lord Ernest Hives - Chair}". say that it is impossible to really tighten up the bolt with the handle in its present position on Phantom. The shortened hub prohibits the use of the ordinary cross-bar type of grid as on EAC.7. and also does not allow the wheel to be place aft of the rear tubular cross-member without the use of a torsional dumbiron 8.000ins. long or the sloping of the wheel forward at the top. Both of these features we considered to be undesirable. We have practically completed a similar set of five schemes for India 3. on the same lines, using many of the present 20HP. wheel carrier pieces and the same luggage carrier as we shew for E.A.C.10. | ||