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 a 48 coil armature dynamo of medium output, without pole piece modification.
| Identifier | ExFiles\Box 62\3\ scan0153 | |
| Date | 19th January 1931 | |
| RR 788 (10M) (3-7-30) BM. 6/2571. X6004 COMPLETED 30.1.31. STANDARDISATION of CHASSIS PARTS. Date: 19.1.31. X No. 6004. Drawing No. Part List A Scrap and replace at all costs, including Chassis already delivered to Customers. B Scrap and replace on Chassis in Works. C Scrap present stock and replace on all Chassis not yet handed to test. D Use existing stock Alteration effective on future Chassis. Description of Parts. 48 COIL ARMATURE DYNAMO OF MEDIUM OUTPUT i.e. WITHOUT POLE PIECE MODIFICATION. (IN CONJUNCTION WITH TWO-RATE OUTPUT SWITCHING SCHEME). Origin. Necessity of reverting to earlier cutting in than is provided for by the 48 coil high output dynamo recently standardised. Experimental Test Report. A machine of this type has been prepared, having been given a brush setting for largest possible output consistently with the fact that the machine is to be used with the two-rate output switching scheme. This machine has been fitted to Sg{Arthur F. Sidgreaves - MD}'s car 58-GN and on preliminary test at Derby operated satisfactorily. Road Test Report. Not yet available. Weight of Old Part. Cost of Old Part. £0-6-0 Weight of New Part. Cost of New Part. £0-6-0 Difference per Car. Difference per Car. £ none Signature from Cost Dept. that above is correct. GRU 24/3/31 429727 Cost of Parts in Works which will be scrapped if commenced on :- Series.........£......... Series.........£......... Series.........£......... INITIAL | DATE | REMARKS SG.{Arthur F. Sidgreaves - MD} | 27-3-31 | Agreed SG.{Arthur F. Sidgreaves - MD} R.{Sir Henry Royce} | 2.2.31 | Agreed FHR. but I think that we are making very poor progress on this work, seem to be doing much spending money and getting no results towards maintaining output at higher speed. (EFC. is responsible). WOR.{Arthur Wormald - General Works Manager} | 19.2.31 | Agreed WOR.{Arthur Wormald - General Works Manager} C. | 13.1.31 | Agreed C. RG.{Mr Rowledge} | 16.1.31 | Agreed Rg.{Mr Rowledge} DA.{Bernard Day - Chassis Design} | 15.1.31 | Agreed Da.{Bernard Day - Chassis Design} BY.{R.W. Bailey - Chief Engineer} | 13.1.31 | Agreed BY.{R.W. Bailey - Chief Engineer} EP.{G. Eric Platford - Chief Quality Engineer} | 13.1.31 | Agreed. Require road test experience. EP.{G. Eric Platford - Chief Quality Engineer} E.{Mr Elliott - Chief Engineer} | 14.1.31 | Agreed AE. PN.{Mr Northey} | 27.1.31 | Agreed PN.{Mr Northey} HS.{Lord Ernest Hives - Chair} | | Agreed Hs.{Lord Ernest Hives - Chair} STAMP: Received. U.S. 26 MAR 1931. | ||