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).
Alterations made to the 'Goshawk II' frame.
| Identifier | WestWitteringFiles\F\January1921\ Scan63 | |
| Date | 19th January 1921 | |
| To ____ from E.{Mr Elliott - Chief Engineer} Copy to ____ ORIGINAL. E1/019/1/21. 3 EFC.X.4260 RE "GOSHAWK II" FRAME. With regard to Mr. Royce's memo R6/G17/1/21, and R3/G18/1/21, we send you herewith drawing Lec.1330 showing the altered side channel for the "Goshawk II" frame. We would like to point out that the alterations are as follows:- The top of the frame is now 21 1/2" from the ground, instead of 21". The depth of the frame is now 6" instead of 5". The rear end of the frame from the top of the back axle has been raised 3/4" on the lower edge so as to give a 5 1/4" metal to metal bump instead of 4 1/2". The bump with be 4 3/4" with a 1 1/2" rubber buffer compressed to 3/4". The rear springs remain unaltered in camber and hence also the position of the front end, and the position of the rear shackle. The depth of the frame section over the rear axle has been increased slightly on account of the increase in depth in the main portion of the frame. Lec.1330 shows the side channels set out on a straight line base which will give you an idea of what alteration had been made to the ends of the frame. The front end of the frame has been slightly altered to conform to the greater depth of the centre, and the alterations have resulted in a much cleaner appearance. Mr. Royce intends now to use a short solid link for the rear end of the front spring, attached to the under-side of the side channel in the manner used on the 40/50 H.P. The front spring has been straightened and inclined to accommodate the alteration to the link. We would further point out that the floor-boards are 2" above the top of the frame and that item (1) of Mr.Royce (Contd.) | ||