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).
With diagrams analyzing piston movement and crankshaft behavior in a 6-cylinder engine.
| Identifier | ExFiles\Box 153\4\ scan0143 | |
| Date | 10th December 1942 guessed | |
| (11) Present to detail his "down" on the 6, the American drew 2 diagrams, so - [Diagram 1: An upward pointing arrow labelled '1,6'. From the base of this arrow, two arrows point down and outwards, labelled '2.5' and '3.4'.] [Diagram 2: A downward pointing arrow labelled '1.6'. From the tip of this arrow, two arrows point up and outwards, labelled '3.4' and '2.5'.] In the L. hand view, he said, cyls 1+6 are at TDC. cyl 1 fires. cyl 6 & the flywheel oppose acceleration now the intermediate 4 pistons are at 20 mins past or 20 mins. to (on a clock face) & are moving slowly - their conn. rods swinging pendulum fashion. Pistons or conn rods in cyls 2.3.4.5 do not help any. ∴ the crankshaft twists so force on earth can stop it, neither can any reasonable engineer grumble at it!!! In the R hand sketch. cyls 1&6 are at BDC & still. But this time, pistons 2.3.4.5 are moving quickly (10 mins to or 10 min past is v.{VIENNA} diff. from 20 to & 20 past) - because of crank dropping from more than 1/2 way from TDC to bottom horizontal These 6 cyl. customs of kinetic energy failings, are not present in 8 cyl, & are really good in the 12. so why does England's best - R.R. - Bentley. Alvis cling to 6? | ||