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 171\1\ img231 | |
| Date | 10th January 1931 | |
| RR 78B (10M) (3-7-30) BM. 5/2571. COMPLETED 30.1.31. STANDARDISATION of CHASSIS PARTS. Date 10.1.31. Description of Parts. 48 COIL ARMATURE DYNAMO OF MEDIUM OUTPUT i.e. WITHOUT POLE PIECE MODIFICATION X No. 6004. Origin. (IN CONJUNCTION WITH TWO-RATE OUTPUT SWITCHING SCHEME). Necessity of reverting to earlier cutting in than is provided for by the 48 coil higher output dynamo recently standardised. Drawing Part List 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. 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. Weight of Old Part. Cost of Old Part. £ 6. 0d. Cost of Parts in Works which will be scrapped if commenced on :- Weight of New Part. Cost of New Part. £ 6. 0d. Series......... Difference per Car. Difference per Car. £ Nil. Series......... Series......... Signature from Cost Dept. that above is correct. G/Rb.{R. Bowen}24.3.31. G.25.3.31. Wor.{Arthur Wormald - General Works Manager} 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. HR. but I think that we are making very slow progress with this work, seem to be doing much spending of money with no results towards maintaining output an the required speed. (E.C. & D.A. responsible) WOR.{Arthur Wormald - General Works Manager} | 13.2.31. | 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. | 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} | ||