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).
Technical report comparing the frame, pedals, and spring shackles of a Packard car with a Rolls-Royce Phantom III.
| Identifier | ExFiles\Box 127\1\ scan0243 | |
| Date | 20th December 1935 | |
| Handwritten Notes: X108 Hs.{Lord Ernest Hives - Chair} c. Wor.{Arthur Wormald - General Works Manager} c. E.{Mr Elliott - Chief Engineer} c. By.{R.W. Bailey - Chief Engineer} c. RHC.{R. H. Coverley - Production Engineer} I should like the Packard and silencer sectioning against one of our own, photographs taken and a reply prepared to the criticism contained in this memo Bm Typed Report: PACKARD CAR We thank you for the opportunity afforded us of briefly externally examining this car. After removing the body, and along with many of the works experts, we have examined this car, and we report as follows:- THE FRAME. For this unit, we cannot withhold some favourable comment, chiefly because of its apparent simplicity of construction. The designers have apparently achieved their object of providing a cheap and rigid frame. The most important feature being the long cruciform which is attached to approximately 90% of the main frame, and is fixed in the simplest manner possible. At various points it is connected with the main frame by short sheet metal brackets, in this manner becoming a species of strengthening crossmembers, and unlike our own Phantom III, crossmembers which go the full width of the frame. Whereas on the Phantom III, we have six members, the Packard, has only three, and these are very light. PEDALS. The Pedal mechanism on this car is of the simplest design as against our admittedly costlier construction. The Pedal shaft appears to be 3/4" or 7/8" round stock, screwed at one end, this end is inserted in the chassis frame, a nut screwed on, leaving the shaft suspended. After the pedals are slipped into position, a sheet iron bracket fixed to the cruciform acts as the opposite support. SPRING SHACKLES. The front end brackets of the rear springs are built up of thick plate, rivetted to the frame and of crude design. The rear shackles are made of flat bar material approximately 5½" long x 1" wide and 3/8" thick. The bars would have three holes drilled in each. | ||