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).
Engine design, focusing on manifold capacity and crankshaft damping.
| Identifier | ExFiles\Box 173\4\ img132 | |
| Date | 9th December 1935 guessed | |
| Also a noisy large capacity manifold at limit 4" did reduce the puffing of pressure in the intake & causes less flow back into the cylinders on closing the inlet valve. Very likely on leaving the 30" track & venture. The inlet timing will have to be made later. As regards harmonic dampers. These can be made from Lanchester over a more modern, but also will cope with the 6 cylinder master series. The section made in 20.3 shows the crankshaft assembly including rods and half the pistons and at most we could get 33.3 lbs in the internal framing. The best cyls is the Buick arrangement shown by leaf spring which holds the necessary damping. On the 45° Cadillac V12 a similar damper is made but is removed. Timing chains make matters worse in the case of removal of several periods. The V of the timing chain & the crankshaft does not wholly remove a damper GRy{Shadwell Grylls} | ||