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Standardisation of a modified 3rd motion shaft for the 25HP synchromesh gearbox to prevent 3rd gear disengagement on overrun.


Identifier  ExFiles\Box 104\4\  scan0181
Date  10th May 1932
  
RR 755 (10H) (19120, 13-10-31) BM. 3/7586.
X5310 COMPLETED 3.2.33.
STANDARDISATION of CHASSIS PARTS. Date 10.5.32.

Description of Parts.
3rd MOTION SHAFT 25HP SYNCHROMESH GEARBOX.
X No. 5310
Drawing No.
Part List

Origin.
To prevent 3rd gear working out on overrun.

Experimental Test Report.
This shaft with altered position of splines has been fitted to 3 cars on which 3rd gear came out of mesh on the overrun effecting in each case a complete cure.

Road Test Report.
Has done several hundred miles on production chassis in Test Dept.

Weight of Old Part.
Weight of New Part.
Difference per Car. £ negligible

Cost of Old Part. £
Cost of New Part. £
Difference per. Car. £

Cost of Parts in Works which will be scrapped if commenced on:-
Series.......£.......
Series.......£.......
Series.......£.......

Signature from Cost Dept. that above is correct. GRH 1/2/33 L 1/2/33

INITIAL | DATE | REMARKS
SG. {Arthur F. Sidgreaves - MD} | 2-2-33 | Agreed SG. {Arthur F. Sidgreaves - MD}
R. {Sir Henry Royce} | 20.1.33. | Agreed FHR. but I am not at all satisfied that this will prove a permanent cure. We ought to test a purposely poor fit equal to worn condition. R. {Sir Henry Royce}
WOR. {Arthur Wormald - General Works Manager} | 20.6.32. | Agreed Wor. {Arthur Wormald - General Works Manager}
C. | 11.5.32. | Agreed C.
RG. {Mr Rowledge} | 11.5.32. | Agreed Rg. {Mr Rowledge}
DA. {Bernard Day - Chassis Design} | 13.5.32. | Agreed Da. {Bernard Day - Chassis Design}
BY. {R.W. Bailey - Chief Engineer} | 10.5.32. | Agreed By. {R.W. Bailey - Chief Engineer}
EP. {G. Eric Platford - Chief Quality Engineer} | 10.5.32. | Agreed EP. {G. Eric Platford - Chief Quality Engineer}
E. {Mr Elliott - Chief Engineer} | 10.5.32. | Agreed AE.
PN. {Mr Northey} | 13.5.32. | Agreed, as being apparently the most encouraging method of coping with the difficulty. We deplore the necessity for stripping our normal standard Searching test. PN. {Mr Northey}
HS. {Lord Ernest Hives - Chair} | | Agreed Hs. {Lord Ernest Hives - Chair}

[STAMP: CHASSIS]
[STAMP: Receive... J.S. F'LY 1933 with clock face]
[Handwritten note: 26.1.33]
  
  
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).


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