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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 a modified 20 HP Starter Drive to improve reliability.

Identifier  ExFiles\Box 40\5\  Scan200
Date  21th November 1927
  
RR 785 REVISED (10M) (DE 649 9-12-26) BM. 2/1187.
V3587
COMPLETED 12.12.27
STANDARDISATION of CHASSIS PARTS.
Date 21.11.27
X No. 5650
No. 3887
Drawing No.
Part List
Description of Parts.
20 HP. STARTER DRIVE.
Origin.
To improve reliability.
Experimental Test Report.
It has been proved that failures of the present 20 HP. starter is frequently caused by the pinion binding against the stop. The modified stop has circumferential teeth and this cannot occur.
Road Test Report.
Run on 11-G-111 500 miles.
500 starts made with this starter equivalent to at least 10,000 miles.
Recommended for immediate standardisation.
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.........£.......
Weight of Old Part.
Cost of Old Part. £ 1. 8. 10
Weight of New Part.
Cost of New Part. £ 1. 9. 9 Wor.{Arthur Wormald - General Works Manager}
Difference per Car.
Difference per Car. £ 11d. increase.
Signature from Cost Dept. that above is correct. G/RO.{C. C. Rose - Export Manager}2.12.27 G.{Mr Griffiths - Chief Accountant / Mr Gnapp}
[STAMP] 20. H.P. CHASSIS
INITIAL | DATE | REMARKS
BJ. | 12.12.27 | Agreed. BJ.
R.{Sir Henry Royce} | 23.11.27 | Agreed. FHR.
WOR.{Arthur Wormald - General Works Manager} | 22.11.27 | Agreed. Wor.{Arthur Wormald - General Works Manager}
RG.{Mr Rowledge} | 22.11.27 | Agreed. RG.{Mr Rowledge}
DA.{Bernard Day - Chassis Design} | 23.11.27 | Agreed. Da.{Bernard Day - Chassis Design}
BY.{R.W. Bailey - Chief Engineer} | 22.11.27 | Agreed. BY.{R.W. Bailey - Chief Engineer}
EP.{G. Eric Platford - Chief Quality Engineer} | 22.11.27 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer}
E.{Mr Elliott - Chief Engineer} | 24.11.27 | Agreed. E.{Mr Elliott - Chief Engineer}
PN.{Mr Northey} | 21.11.27 | Agreed. PN.{Mr Northey}
CWB. | 24.11.27 | Agreed. CWB.
Hs.{Lord Ernest Hives - Chair} | 21.11.27 | Agreed. Hs.{Lord Ernest Hives - Chair}
  
  


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