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 discussing the principles of transverse couple balancing for a connecting rod's mass and the resulting out-of-balance couple.
| Identifier | WestWitteringFiles\M\2October1924-December1924\ Scan12 | |
| Date | 25th October 1924 guessed | |
| Contd. -6- There is only, then, to consider, as regards transverse couple balancing, the mass Mg at the centre of mass of the con rod, though as regards linear balance this has to be considered additionally to Mx{John H Maddocks - Chief Proving Officer} and Mp. The portion Mg being only a particle requires only linear effective forces to produce its known motion, but the lines of action of these linear forces for complete balance must pass through the particle. It may be balanced linearly only by allowing it to contribute a fraction b ---- of Mg to the X end a + b and a fraction a ---- of Mg to the P end. a + b to the masses at X and P respectively to be linearly balanced, because such a system possesses the same mass and centre of mass as the actual particle (see P.2 top). The lines of action of the linear balancing forces are then along OX and OP respectively, and do not pass through the particle itself, so that although linear balance is effected, an out-of-balance couple of magnitude determined by Mg, not by Mk², remains. Contd. | ||