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).
Suitability of different metals for H.T. distributors and comparing insulation with Bosch products.
| Identifier | ExFiles\Box 61b\2\ scan0017 | |
| Date | 15th September 1925 | |
| X7690 To EFC. from R.{Sir Henry Royce} R3/M15.9.25. X.800. X.4357. X.8690 X.4275. X.3309 In our H.T. distributors I believe we use nickel. Would any other metal be more suitable, such as tungsten, real silver, or stainless steel ? Looking at the Bosch distributor head it would appear that their insulation is considerably less than we use, and yet you are complaining of cracking of the same materials. R.{Sir Henry Royce} | ||