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).
Drawing No. Lec. 1901 concerning floating piston pins with spherical ends for E.A.C. II & Goshawk III pistons.
| Identifier | WestWitteringFiles\L\July1924-September1924\ Scan101 | |
| Date | 1st July 1924 | |
| TO BY.{R.W. Bailey - Chief Engineer} FROM E.{Mr Elliott - Chief Engineer} (BY.{R.W. Bailey - Chief Engineer} is struck through) SECRET ORIGINAL E2/M18. 7. 24. Copy to - CJ. HS.{Lord Ernest Hives - Chair} (CJ. is struck through) E.{Mr Elliott - Chief Engineer} A.{Mr Adams} C. II. & GOSHAWK III. PISTONS. X.4224 X.8040 We send you herewith drawing No. Lec. 1901., shewing floating piston pins with spherical ends for the above. The piston pins are held in place by the cylinder bores, and the latter are prevented from being damaged by spherical aluminium plugs pressed into the ends of the piston pins. Care will be needed to avoid distorting the pin when assembling the plugs, since the former is such an exact fit in the piston. Trouble might be expected due to the piston pins being driven out, and this action collapsing the plugs. If this is so, the plugs may be thickened. The EAC. piston shewn is similar to the one already designed for the longer connecting rods, and we should like to point out that its general thickness as shewn on this and the original drawing, is less than the standard 40/50 piston. E.{Mr Elliott - Chief Engineer} | ||