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).
Ignition coil design and the development of a cheaper starter for the Japan 3 & Peregrine chassis.
| Identifier | ExFiles\Box 179\1\ img054 | |
| Date | 27th October 1931 | |
| HS{Lord Ernest Hives - Chair}/WST. FROM R.{Sir Henry Royce} [Struck through text: C. to GG. WOR.{Arthur Wormald - General Works Manager} BY.{R.W. Bailey - Chief Engineer}] ELECTRICAL WORK, IGNITION & STARTER. [Stamped: RECEIVED] [Handwritten: X6058 X5620] I understand that you are expecting WW. to send you a design for an ignition coil with external primary, the advantage we could see being economy of the fine and expensive secondary winding, and the natural increase in ohmic resistance of the primary probably avoiding the necessity of ballast resistance. It would save time if you sent us a specimen of the best you can find. JAPAN 3. & 'PEREGRINE' STARTER. It is intended to make a cheaper edition of our sequence starter for these chassis, so we shall be going over the various items to simplify them. Our reason for not using the RR. edition of Bendix/Bijur is that even our design of this leaves much to be desired in silence and reliability, and we also need greater ratio of gearing. We understand that press button operation is [handwritten insert: naturally] preferred on high class cars instead of pedal. [handwritten insert: 20HP was so fitted for economy & avoid a relay clutch] R.{Sir Henry Royce} | ||