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).
Analysis of cylinder pressure using a light spring card with a non-firing cylinder at varied RPMs.
| Identifier | WestWitteringFiles\K\September1923\ Scan57 | |
| Date | 17th August 1922 guessed | |
| LIGHT SPRING CARD - NOT FIRING. REVS: VARIED. Cards taken at 1250 and 2400 r.p.m. - Exhaust Manifold on. These demonstrate that the pressure builds up in the cylinder to a greater extent when running at a high speed than when running at a low speed, also that it decreases rapidly below 2000 r.p.m. ----------------- | ||