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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 bottom washer for valve springs to improve oil drainage and spring location.

Identifier  ExFiles\Box 171\1\  img044
Date  24th September 1926
  
RR 288A (10M) (SL 72 18-7-23) MP 27494A
ORIGINAL. COMPLETED 19.10.26
40/50 HP. CHASSIS. (written above a struck-through 'AERO ENGINE PARTS.')
ALTERATIONS TO R.R. AERO ENGINE PARTS. ('AERO ENGINE PARTS.' is struck through)

[STAMP: CONDOR EAGLE FALCON HAWK]

Description of Parts: BOTTOM WASHER FOR VALVE SPRINGS.
Origin: Better spring location, less dia. hole at top for preventing oil draining in, sloping top for improved oil drainage.
Experimental Test Report: 10,000 miles in France fitted to 12-EX. There was no sign of excess oil getting down valve guides. Spigot retained springs more firmly.

DATE: 24.9.26
X No. 7060
Drawing No. E.74814/5
Part List: Sch. 740
Difference in weight.

"C" - Scrap present stock and replace on all engines not yet handed to test.

Signature of Expl. Dept. that above is correct
Weight of Old Part
Cost of Old Part: £ 3. 8d.
Weight of New Part
Cost of New Part: £ 5. 11d.
Difference per Engine: £ 2. 3d. increase.
Cost of Parts in Works and Stores which will be scrapped if commenced on:--

Signature of Mr. De LOOZE that above is correct My/Ro.{C. C. Rose - Export Manager} 4.10.26

SIGNATURES | DATE | REMARKS
--- | --- | ---
[REDACTED] C.W.B. | 25.9.26 | Agreed. CWB.
MR. B. JOHNSON | 18.10.26 | Agreed. B.Johnson.
MR. ROYCE | 1/10/26 | Agreed FHR
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 DR
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 AE
MR. HIVES | 24.9.26 | Agreed. Hs.{Lord Ernest Hives - Chair}
MR. NORTHEY. | 29.9.26 | Agreed. PN.{Mr Northey}

[LARGE GREEN STAMP: PHANTOM]
  
  


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