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).
Standardisation of battery ignition by positioning the coil close to the distributor.
| Identifier | ExFiles\Box 172\3\ img019 | |
| Date | 21th January 1920 | |
| R.R. 755 (S H) (S F.{Mr Friese} 621. 2-5-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2561. COMPLETED. 601 / 20.2.20 STANDARDISATION OF CHASSIS PARTS. Description of Parts. Battery Ignition. Position of Coil close to Distributor. Origin. The reduction of the electrostatic effect brought about by this means renders the coil capable of giving a longer spark, so reducing the tendency to misfire by allowing a larger gap to be used at the plugs with the consequent advantage of increase of amplitude of current oscillation in the spark. Experimental Test Report. We have shown by expts.(see EFC1/T14.1119) on the bench that a definite reduction in the length of spark obtainable from the coil takes place with increase in the length of H.T. cable, hence it is advisable to reduce the length of H.T. cable as much as possible. Road Test Report. Extract HS{Lord Ernest Hives - Chair}6/LG20120. We have had three cars running with this arrgt. of ignition 1EX, 2EX and 49-GB. Although we have not been able to appreciate any distinct gain in this arrgt. we have found no disadvantage in it compared with the standard arrangement. Signature of Exp. Dept. that above is correct. (Sgd) E.F.Clark. Weight of Old Part. -- Cost of Old Part. £ -- Weight of New Part. -- Cost of New Part. £ -- Difference per Car. None. Difference per Car. £ -- Cost of Parts in Works and Stores which will be scrapped if commenced on:- Series... £... Series... £... Series... £... Storekeeper advised re above. Storekeeper's Signature. Signature of Mr. DELOOZE that above is correct. SIGNATURES, DATE, REMARKS Mr. JOHNSON. 19.2.20, C.Johnson. Mr. ROYCE. 26.1.20, Agreed. FHR. This should be done as soon as convenient, it is so much better & looks so much nicer. Mr. WORMALD. 22-1-20, Refer to wait - 10,000 mile report Flah. (later) Agreed. Wor.{Arthur Wormald - General Works Manager} 20-2-20 Mr. NADIN. Mr. PLATFORD. 22.1.20, Agreed EP.{G. Eric Platford - Chief Quality Engineer} Mr. NORTHEY. 23.1.20, Agreed. PN.{Mr Northey} Mr. BAILEY. 22.1.20, Agreed Ev.{Ivan Evernden - coachwork} Mr. BARRINGTON. 22.1.20, Agreed. Bn.{W.O. Bentley / Mr Barrington} Mr. DAY. 23.1.20, Agreed. Da.{Bernard Day - Chassis Design} | ||