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).
Pressure on battery ignition contact points.
| Identifier | ExFiles\Box 61b\1\ scan0038 | |
| Date | 29th April 1927 | |
| To EFC. from R.{Sir Henry Royce} c. to BJ. Wor.{Arthur Wormald - General Works Manager} Hs.{Lord Ernest Hives - Chair} BY.{R.W. Bailey - Chief Engineer} X4041 H1/M29.4.27. BATTERY IGNITION CONTACT POINTS. X2894 I do not understand the object of increasing the pressure on the tungsten points unless you find on comparison that those that run for a longer time than our own have an increased pressure. It should also be understood that if the spring is correctly bent, and the hole in the spring has sufficient clearance, there should be no weight on the contact maker rocker arm joint, and I do not remember that we have had much failure through any such pressure. I consider we are still making poor progress with this unit. R.{Sir Henry Royce} | ||