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).
Conversation with Mr. North of the Watford Company regarding various magneto designs and automatic advance mechanisms.
| Identifier | ExFiles\Box 48\2\ Scan458 | |
| Date | 5th November 1926 | |
| X.8796 1 c. EFC. {E. Fowler Clarke - Electrical Engineer} BY4/H. 5.11.26. MAGNETOS. X7791 RECEIVED Hs {Lord Ernest Hives - Chair} NOV 5 1926 Referring to R6/M. 2.11.26. having talked the matter over with Mr.North, the position of the Watford Company in regard to the new magneto work is as follows:- 1. They are producing an automatic advance mechanism which is interposed between the engine and the magneto in such a manner as to advance the magneto as a whole, the breaking point therefore remaining a constant relative to the maximum flux position in a magneto. 2. The Watford Company are not at the moment producing a magneto on the lines of the Lucas. They appreciate the possibilities of this type and are prepared, if you would like to try an experimental magneto along these lines, to produce a magneto with the necessary large armature and extended pole shoes. The value of this design depends absolutely on the larger armature employed, and extended pole shoes. They would be pleased to put in hand an experimental magneto of this type if you are interested in trying it out. 3. The Watford Company are at the moment, however, of the opinion that their sleeve type magneto is more than the equivalent of the type we refer to under Heading 2. This is merely an expression of their opinion, and is not intended by them to carry weight in regard to determining whether you would like to go ahead with the special magneto referred to. 4. Mr.North seemed to be of the opinion that he had somewhat interested you in the standard type sleeveless magneto with a mechanism between the engine drive and the magneto advance as described under Heading 1. If this is so, they would like to have a curve showing the characteristics of the ignition which we call for when using your relay advance mechanism with their sleeve type. BY. {R.W. Bailey - Chief Engineer} | ||