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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, specifically regarding the use of Firths 'Silchrome' steel for valves.

Identifier  ExFiles\Box 171\3\  img243
Date  21th August 1924
  
RR 752 (10M) (SL391 2-11-23) MP 261297
COMPLETED 8.9.24.
STANDARDISATION of CHASSIS PARTS.
Date 21.8.24.
Description of Parts.
FIRTHS 'SILCHROME' STEEL FOR VALVES.
No. 4634
Origin.
To improve design.
Experimental Test Report.
Firths Silchrome is made to the same specification as Thompsons Silchrome of U.S.A.
Tests show it to be definitely better than the present material we are using.
Road Test Report.
Run 12,000 miles on 35-PK.
Run 8,000 miles on 98-NK.
Run 6,000 miles on 9-PK.
No troubles.
CHASSIS (Stamp)
Weight of Old Part. Cost of Old Part. £ 2. 15. 0
Weight of New Part. Cost of New Part. £ 2. 11. 0
Difference per Car. Difference per Car. £ 4. 0 saving.
Signature of Mr. De LOOZE that above is correct. MV/Rhs. 4.9.24.
SIGNATURES | DATE | REMARKS
MR. JOHNSON | 8.9.24 | Agreed. C.Johnson - Fire ahead. CJ.
MR. B. JOHNSON | 15.9.24 | Agreed. B.J.
MR. ROYCE | 29/8/24 | Agreed F.H.R. urgent
MR. WORMALD | 22.8.24 | Agreed. Wor.{Arthur Wormald - General Works Manager}
MR. ROWLEDGE | 21.8.24 | Agreed. Rg.{Mr Rowledge}
MR. DAY | 22.8.24 | Agreed. Da.{Bernard Day - Chassis Design}
MR. BAILEY | 22.8.24 | Agreed. BY.{R.W. Bailey - Chief Engineer}
MR. PLATFORD | 22.8.24 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer}
MR. ELLIOTT | 28/8/24 | Agreed CE.
MR. NORTHEY | 22.8.24 | Agreed. PN.{Mr Northey}
MR. HIVES | 4.9.24 | Agreed. E.Hives.
Check Box Options:
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
  
  


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