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).
Anodised piston surfaces, aluminum connecting rods and aero engine detonation.
| Identifier | ExFiles\Box 173\2\ img082 | |
| Date | 25th January 1934 | |
| XII anodise'd piston surface (alumilite) which is really an aluminum oxide. I am bringing two sets of this type of piston back for the 20/25 Alum Con Rods I had a further talk with the Bohn people. They fit a steel cap to keep the big end round they say. I don't think they know as much as Leylands of the Alum rod in service. AERO - Got hold of Heron to try and get some information re HS{Lord Ernest Hives - Chair}/Lov{Mr Lovesey}/13/HS{Lord Ernest Hives - Chair} 25.1.34 Detonation. Heron says one of the best indications of detonation is to switch off momentarily, if all cyls will cut out dead for about ten revs, no detonation. The other way is to take a consumption loop and if the engine will hold 99% full power on .43 lbs/BHP hr there is no detonation and the distribution is very good. Or run on a fuel that you know will not detonate and then compare | ||