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).
Describing the design of a flat 2nd crossmember for the Myth frame, including its weight and comparison to the Rippletto design.
| Identifier | ExFiles\Box 110\2\ scan0025 | |
| Date | 7th January 1941 | |
| 727 1030 To Rm.{William Robotham - Chief Engineer} from Ev{Ivan Evernden - coachwork}/JD.{J. Draper - Frames} c. to Ev.{Ivan Evernden - coachwork} c. to Rm{William Robotham - Chief Engineer}/HH. c. to Rm{William Robotham - Chief Engineer}/EAG. Ev{Ivan Evernden - coachwork}/JD.{J. Draper - Frames}3/SW.7.1.41. MYTH. F R A M E.{Mr Elliott - Chief Engineer} We attach to Rm{William Robotham - Chief Engineer}/HH's copy the original of PL.425 2nd Crossmember. The above scheme shows a flat 2nd crossmember, spot welded to the underside of the flanges of the frame side channels. The design of this crossmember is similar to Rippletto except that the flanges are turned downwards instead of upwards. The approximate estimated weight of the Crossmember is 4.500 lbs. Ev{Ivan Evernden - coachwork}/JD.{J. Draper - Frames} Original to Rm{William Robotham - Chief Engineer}/HH. Prints to Ev.{Ivan Evernden - coachwork} Rm{William Robotham - Chief Engineer}/HH. Rm{William Robotham - Chief Engineer}/EAG. | ||