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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 chassis parts, specifically Watford Magnetos type EW6A fitted with Tungsten contact points.

Identifier  ExFiles\Box 172\3\  img127
Date  12th September 1930
  
RR 785 (10H) (3-7-30) BM. 5/2571.
ORIGINAL
COMPLETED 6.10.30.
STANDARDISATION of CHASSIS PARTS.
Date 12.9.30.
X No. 7792.
Description of Parts. WATFORD MAGNETOS TYPE EW6A FITTED WITH TUNGSTEN CONTACT POINTS.
Origin. Reduction in cost and increased reliability
Experimental Test Report.
As reported more fully in our EFC2/AD11.9.30, satisfactory results with these machines have been obtained both on the bench and on preliminary chassis tests.
Road Test Report.
These magnetos have run
15,000 miles on 23-EX
5,000 " on 22-EX
5,000 " on 20-EX
8,000 " on 19-EX
Drawing No.
Part List
A Scrap and replace 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.
Weight of New Part.
Difference per Car.
Cost of Old Part. £7. 16. 0d.
Cost of New Part. £7. 12. 10d.
Difference per Car. £ 3. 2d. DECREASE.
Signature from Cost Dept. that above is correct G/RB.{R. Bowen} 2.10.30. Wor.{Arthur Wormald - General Works Manager}
Cost of Parts in Works which will be scrapped if commenced on :-
Series.........£.......
Series.........£.......
Series.........£.......
INITIAL | DATE | REMARKS
SG.{Arthur F. Sidgreaves - MD} | 3.10.30 | Agreed Sg.{Arthur F. Sidgreaves - MD}
R.{Sir Henry Royce} | 16/9/30 | Agree S.M.R. but to be certain these are more lasting & reliable than present type.
WOR.{Arthur Wormald - General Works Manager} | 13.9.30 | Agreed WOR.{Arthur Wormald - General Works Manager}
C. | | Agreed C.
RG.{Mr Rowledge} | 15.9.30 | Agreed Rg.{Mr Rowledge}
DA.{Bernard Day - Chassis Design} | 15.9.30 | Agreed Da.{Bernard Day - Chassis Design}
BY.{R.W. Bailey - Chief Engineer} | 15.9.30 | Agreed By.{R.W. Bailey - Chief Engineer}
EP.{G. Eric Platford - Chief Quality Engineer} | 12.9.30 | Agreed EP.{G. Eric Platford - Chief Quality Engineer}
E.{Mr Elliott - Chief Engineer} | 15.9.30 | Agreed AE.
PN.{Mr Northey} | 15.9.30 | Agreed PN.{Mr Northey}
HS.{Lord Ernest Hives - Chair} | | Agreed Hs.{Lord Ernest Hives - Chair}
  
  


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