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).
Powdery substance observed on ignition wires, identifying it as harmless resin from varnish.
| Identifier | ExFiles\Box 168\1\ img110 | |
| Date | 21th December 1931 | |
| X6117. EP{G. Eric Platford - Chief Quality Engineer}/Thn. from Hs{Lord Ernest Hives - Chair}/Wst. Hs{Lord Ernest Hives - Chair}/Wst.2/AD21.12.31. With reference to your EP{G. Eric Platford - Chief Quality Engineer}/Thn.5/T19.12.31 giving a report from your tester W.Goose at Martlesham. The powdery substance which he observed on the braiding of the wire is simply the resin, out of the synthetic resin varnish which is used for painting round the ends of the cables, drying and powdering away from the surface. This has no action at all on the life of the ignition wires and can be entirely ignored. We have noticed this ourselves some time ago and have arranged with Mr. Brock that his dept. shall only paint the cable where absolutely necessary. Hs{Lord Ernest Hives - Chair}/Wst. | ||