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).
Proposal to fit duralumin connecting rods to the E.A.C. engine to reduce vibration and weight.
| Identifier | WestWitteringFiles\N\July1925-September1925\ Scan13 | |
| Date | 3rd July 1925 | |
| TO Div. (struck through) HS.{Lord Ernest Hives - Chair}} FROM R.{Sir Henry Royce} ORIGINAL R R6/M3.7.25. E.A.C. ENGINE. Y8770 (struck through) Y8030 It has occurred to me that the E.A.C, engine might be greatly benefited by fitting duralumin con. rods, and as we are now proposing to try separate bushes whitemetal lined, as an alternative to lining the con. rods, we think it may be an opportune moment to try a duralumin stamping and attempt to reduce certain vibrations, if the rod and little end can be made lighter by using this material. We sent you a rod with bushes which would just go in the space, and we would like you to find out from the makers of duralumin what design and proportions of rod they find most successful. We think that Vickers are the duralumin people, and that the rod would naturally be a drop forging. We should not suppose that it was worth while unless we could reduce the weight of the rod by 30%. We are working so hard at aero engines that we have not time to get out a rod, and we have not the particulars from the makers of duralumin. R.{Sir Henry Royce} (STAMP: RECEIVED) | ||