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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}
  
  


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