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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 parts report for a spare wheel retaining disc without fins.

Identifier  ExFiles\Box 171\5\  img076
Date  15th November 1938
  
RR 755A (10H) (49998) 19/10/37 C.E.Co.
COMPLETED DATE 27.4.39.
25/50.H.P.
WRAITH
STANDARDISATION OF PARTS
Date Issued 15.11.38
Sheet No. W.11.
Drg. No.
L.O.P.S.
Description: SPARE WHEEL RETAINING DISC WITHOUT FINS.
Purpose: To reduce cost.
Brief Report and Remarks: Fitted to 28.G.VI
Doesnot present any difficulty when wheel changing.
When recommended for Introduction: To suit production.
Report References:
By Rm.{William Robotham - Chief Engineer} Da.{Bernard Day - Chassis Design} Mx{John H Maddocks - Chief Proving Officer}
By Rm.{William Robotham - Chief Engineer} Da.{Bernard Day - Chassis Design} Mx{John H Maddocks - Chief Proving Officer}
Old Parts - Material £.s.d: 3, Labour £.s.d: 1 6, Burden £.s.d: 2 8, Total £.s.d: 4 5
New Parts - Material £.s.d: 3, Labour £.s.d: 9, Burden £.s.d: 1 4, Total £.s.d: 2 4
Decrease in Cost £0. 2. 1. GRL 4/1/39.
Cost of Tools £ 5.10.0.
Production Position and Comments: Spare wheel retaining disc without fins to reduce cost can be introduced at the 1st. chassis in 'C' series without scrap.
There is a decrease in Factory cost of 2/1d. per chassis and the tool cost of £5.10.0d. will thus be removed after producing 53 chassis i.e. at the 53rd. chassis in 'C' series.
RHC.{R. H. Coverley - Production Engineer}
Authorisation to Proceed.
Introduce on the 1 Chassis in C Series.
Sg.{Arthur F. Sidgreaves - MD} Signature Date 26/4/39
Hs.{Lord Ernest Hives - Chair} Signature Date 26/4/39
  
  


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