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).
On the 'Goshawk II' battery ignition, comparing various distributor designs and materials.
| Identifier | ExFiles\Box 39\3\ Scan025 | |
| Date | 24th February 1921 | |
| R.R. 235a (100 T) S.R. 798. 10-12-20. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2947 X 3573 To R.{Sir Henry Royce} & E.{Mr Elliott - Chief Engineer} from Hs.{Lord Ernest Hives - Chair} c. to CJ. Hs{Lord Ernest Hives - Chair}8/LG24.2.21. X.3485 - "GOSHAWK II" BATTERY IGNITION. X.800. X.4286. E1/G22.2.21. We have found no disadvantage in the face pattern distributor such as those fitted to the Packard car, compared with the standard Bosch pattern. With any type of rubbing carbon distributor we have had experience with, it is necessary to wipe them periodically in order to get rid of the carbon dust which otherwise causes tracking. The quality of the carbon brushes and the insulating material used for the rubbing surface is the most important feature to obtain a reliable distributor. Bakelite is no use for the rubbing surface. The material used on the Delco distributor on the Marmon car is different to that on the Delco distributor on the six years old Buick car. We suggest before we condemn the Delco scheme, we ought to prove how their modern distributors wear because there is a definite advantage in getting rid of carbon brushes. Hs.{Lord Ernest Hives - Chair} | ||