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).
The interference fit on a B.80 3.5 Bore Aluminium part, requesting confirmation of its sufficiency.
| Identifier | ExFiles\Box 124\2\ scan0160 | |
| Date | 7th May 1940 | |
| 1044 FILE To Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}/HH3/7.5.40. B.80 3.5 Bore Aluminium. Further to our instructions in memo Rm{William Robotham - Chief Engineer}/HH.9/1.5.40. we wouldpoint out that we have allowed a similar interference fit on the liner dia., to that on the B.80 alum., 3.5 bore Will the Experimental Dept. please inform us if they consider this interference to be sufficient. Rm{William Robotham - Chief Engineer}/HH. | ||