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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 document for a radiator dropped 4.000 inches in the frame.

Identifier  ExFiles\Box 172\1\  img220
Date  7th October 1931
  
RR 78B (10M) (8458. 24-10-30) 6/318B
ORIGINAL. COMPLETED 10.12.31
STANDARDISATION of CHASSIS PARTS.
Date 7.10.31
Description of Parts: RADIATOR DROPPED 4.000" IN FRAME
Origin: To improve appearance. It is also beneficial to cooling.
Experimental Test Report: Fitted to 19-GIV for tests in France. 7/8 1/4 mm. tubes, dested. E.56692. Copper.
Road Report: Fitted to 19-GIV and ran 15,000 miles in France. Cooling efficiency was improved. There was only slight loss of water, and a slight leak developed at the bottom left-hand corner of the tank.
X No. 5250
Drawing LOP. No. E.56831
Part N. sch. 3313
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.
Cost of Parts in Works which will be scrapped if commenced on:-
Series......£......
Series......£......
Weight of Old Part:
Cost of Old Part: £ 29-9-6 Also covers Thermostatically operated shutters
Weight of New Part:
Cost of New Part: £ 34-2-5 and Hexagon Radiator
Difference per Car: £ 4-12-11 Difference on tubes in copper. See HS{Lord Ernest Hives - Chair}/ML/418. £2.s1.f......
Signature from Cost Dept. that above is correct: J/207.12.31. GB/13/81.
INITIAL | DATE | REMARKS
SG.{Arthur F. Sidgreaves - MD} | 9.12.31 | Agreed Sg.{Arthur F. Sidgreaves - MD}
R.{Sir Henry Royce} | 15/10/31 | Agreed R.{Sir Henry Royce}
WOR.{Arthur Wormald - General Works Manager} | 9.10.31. | Agreed Wor.{Arthur Wormald - General Works Manager}
C. | 9.10.31. | Agreed C.
RG.{Mr Rowledge} | 9.10.31. | Agreed Rg.{Mr Rowledge}
DA.{Bernard Day - Chassis Design} | 10.10.31. | Agreed Da.{Bernard Day - Chassis Design}
BY.{R.W. Bailey - Chief Engineer} | 9.10.31. | Agreed By.{R.W. Bailey - Chief Engineer}
EP.{G. Eric Platford - Chief Quality Engineer} | 15.10.31. | Agreed EP.{G. Eric Platford - Chief Quality Engineer}
E.{Mr Elliott - Chief Engineer} | 14.10.31. | Agreed AE.
PN.{Mr Northey} | 16.10.31. | Agreed PN.{Mr Northey}
HS.{Lord Ernest Hives - Chair} | | Agreed
[STAMP] 20/25 H.P. CHASSIS
  
  


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