Rolls-Royce Archives
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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).
Alteration to the Front Silencer using non-rusting and better lagging material (staybright).

Identifier  ExFiles\Box 171\1\  img048
Date  24th September 1926
  
RR 289A (10H) (SL 72 19-7-23) MP 274954A
ORIGINAL
COMPLETED 19.10.26
ALTERATIONS TO R.R. AERO ENGINE PARTS.
40/50 CHASSIS.
Description of Parts: FRONT SILENCER.
Origin: Non-rusting and better lagging (staybright)
Experimental Test Report:
10,000 miles in France fitted to 12-EX.
Remained in very good condition.
The present aluminium lagging quickly deteriorates.
Signature of Expl. Dept. that above is correct:
Weight of Old Part: Cost of Old Part: £ 1. 8d.
Weight of New Part: Cost of New Part: £ 7. 4d.
Difference per Engine: Difference per Engine: £ 5. 8d. increase.
Signature of Mr. De LOOZE that above is correct: My/Rb{R. Bowen} 14.10.26
DATE: 24.9.26
X No. 7230
Drawing No. E.74696
Part List E.74635
Air Ministry consent obtained.
Difference in weight.
"A"--Scrap and replace at all costs.
"B"--Scrap and replace on those engines in Works.
"C"--Scrap present stock and replace on all engines not yet handed to test.
"D"--Use up existing stock. Alteration effective on future engines.
Cost of Parts in Works and Stores which will be scrapped if commenced on:--
SIGNATURES | DATE | REMARKS
[Signature] | 25.9.26 | Agreed. CWB.
MR. B. JOHNSON | 18.10.26 | Agreed. B.Johnson.
MR. ROYCE | 1/10/26 | Agreed FMP
MR. WORMALD | 24.9.26 | Agreed. Wor.{Arthur Wormald - General Works Manager}
MR. ROWLEDGE | 27.9.26 | Agreed. Rg.{Mr Rowledge}
MR. DAY | 1/10/26 | agreed Da{Bernard Day - Chassis Design}
MR. BAILEY | 11.10.26 | Agreed. BY.{R.W. Bailey - Chief Engineer}
MR. PLATFORD | 27.9.26 | Agreed. EP.{G. Eric Platford - Chief Quality Engineer}
MR. ELLIOTT | 1/10/26 | Agreed OE
MR. HIVES | 24.9.26 | Agreed. Hs.{Lord Ernest Hives - Chair}
Mr. Northey. | 29.9.26 | Agreed. PN.{Mr Northey}
  
  


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