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).
Page from a paper analyzing unusual cases in the mechanics of a connecting rod and linear balancing.
| Identifier | WestWitteringFiles\M\2October1924-December1924\ Scan6 | |
| Date | 1st October 1924 | |
| EFC1/T6.10.24. -12- Contd. (7) For completeness three further (unusual) cases will be considered :- (a) That in which the centre of mass G of the con. rod is nearer to P than previously considered, so that k^2 is greater than ab. (b) That in which G coincides with P (b = zero) (c) That in which G is on the line XP and at a distance b beyond P. (a) In case (a) Mx{John H Maddocks - Chief Proving Officer} viz. (b / (a + b)) M, and Mp viz. (a / (a + b)) M are still positive. So also are Mx{John H Maddocks - Chief Proving Officer} viz. (k^2 / a(a + b)) M, and Mp viz. (k^2 / b(a + b)) M but these are now respectively greater than Mx{John H Maddocks - Chief Proving Officer} and Mp, k^2 being greater than ab. Mg viz. ((ab - k^2) / ab) M is now negative. When complete linear balancing is effected, i.e. balancing to the extent of Mx{John H Maddocks - Chief Proving Officer} and Mp, there remains an unbalanced con. rod couple represented by = M (k^2 - ab) Ø (or - Mg.ab ) this couple being in the direction which would appear natural as a result of the con. rod swing, i.e. in a direction opposite to the first con. rod couple mentioned (see p.8 top) Contd. | ||