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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 for the change gear and brake operating mechanism.

Identifier  ExFiles\Box 171\1\  img008
Date  10th December 1925
  
RR 755 (10M) (SL391 2-11-23) MP 281297
ORIGINAL
STANDARDISATION of CHASSIS PARTS.
Description of Parts. CHANGE GEAR AND BRAKE OPERATING MECHANISM.
Origin. To improve design.
Experimental Test Report.
It is proposed to use a small gate for change speed mechanism without notches.
The arrangement is neater and more convenient for coachwork - it is essential if body subframe is used.
Road Test Report.
Run 10,000 miles on 8-EX car - No troubles.
Fitted to 46-PK, 11-EX, 7-EX and 10-EX - Total mileage 11,200 miles - No troubles.
Weight of Old Part.
Cost of Old Part. £ 19-19-0
Weight of New Part.
Cost of New Part. £ 18-8-6
Difference per Car.
Difference per Car. £ 1-10-6 Saving
Signature of Mr. COSTLAKE that above is correct. M J Russ 21/2/26
SIGNATURES
DATE
REMARKS
MR. JOHNSON
MR. B. JOHNSON
MR. ROYCE
MR. WORMALD
MR. ROWLEDGE
MR. DAY
MR. BAILEY
MR. PLATFORD
MR. ELLIOTT
MR. NORTHEY
MR. HIVES
X No. 8320
Drawing No.
Part 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......... £.........
Series......... £.........
ACTION
  
  


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