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 record for lightened ignition wire tubes for Eagle, Falcon, and Hawk engines.
| Identifier | ExFiles\Box 172\3\ img001 | |
| Date | 22th October 1917 | |
| R.R. 288A (S 14) (S.D. 353. 29-3-17) Bm. 2/142/3. Eagle Engines Series 9. - 1601 onwards. ALTERATIONS TO R.R. AERO ENGINE PARTS. Description of Parts. Lightened ignition wire tubes. (Lec. 723). Origin. Lightening of engine as per EH6/G12.1.17. Experimental Test Report. EH3/LG10.9.17. (Extracts) "As regards insulation the new tube is quite as efficient as the present one. It will be slightly more difficult to make than the present ones." "We recommend we adopt this lightened tube. The clips will need modifying to suit this new tube." EAGLE. FALCON. HAWK. DATE X No. 2871. Drawing No. E.12878. Part List. E.12878. Admiralty consent obtained. We have applied to Airboard but not had reply. "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. Signature of Expl. Dept. that above is correct. (Sgd) E.Hives. Weight of Old Part. 5.5 lbs. per engine Cost of Old Part. £ Per engine £3.17.8. on- Cost of Parts in Works and Stores which will be scrapped if commenced £ nil Weight of New Part. 2.13 lbs. per engine Cost of New Part. £ Per engine, £4.9.4. Storekeeper advised re above. Difference per Engine. 3.37 lbs. Difference per Engine. £ 11/8 increase. Storekeeper's Signature. Signature of Mr. DeLOOZE that above is correct. (Sgd) D.{John DeLooze - Company Secretary} SIGNATURES | DATE | REMARKS Mr. JOHNSON. | 12.10.17. | Agreed. BJ. Mr. ROYCE. | 22/10/17 | Agree under D Mr. WORMALD. | 25.9.17. | Agreed, but sorry there is more work than old one. Wor.{Arthur Wormald - General Works Manager} Mr. NADIN. | | (Absent in U.S.A.). Mr. PLATFORD. | 25.9.17. | Agreed. EF - "D". Mr. BAILEY. | 26.9.17 | agreed By EF "D" try engine No1 all stock by old tube will be used up. NOTE.—We have arranged with the Admiralty that if we find it necessary to make any alterations to these Engines we will notify the Admiralty what alterations we propose to make, and what will be the cost of them and of the consequent scrap, if any. So that we may ascertain whether the Admiralty will pay or Rolls-Royce will have to pay. 10.10.17. This has been submitted to Air Board, but no reply yet to hand. | ||