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).
List of design modifications and drawing updates for the Merlin 'C' aero engine.

Identifier  ExFiles\Box 30\3\  Scan199
Date  12th June 1935
  
- 5 - BY.11/C.12.6.35.

"MERLIN C" AERO ENGINE.

DES. 2446 Lugs on Thrust Housing Flange for cowl ring
attachment................................ Recd. 26.4.35.
Detail drawings completed and issued ...... 14.5.35.

DES. 2448 Modfn. to Drive for Herzmark Compressor.
Detail drawings completed and issued ...... Recd. 29.4.35.
8.5.35.

DES. 2451 Crankcase Modfn ................... Recd. 29.4.35.
Drawing alteration issued ................. 4.5.35.

DES. 2460 Strengthened Crankcase Centre Bearing Web.. Recd. 3.5.35.
Drawing alteration issued ................. 4.5.35.

DES. 2464 Crankcase larger oil drain holes through
front wall .......................... Recd. 13.5.35.
Superseded by DES. 2474.

DES. 2465 Crankcase Modfn ................... Recd. 13.5.35.
Drawing alteration issued ................. 13.5.35.

RR. Sch. 851 Oil Pipe - Pressure Pump to Relief Valve.
Detail drawings completed and issued .... 13.4.35.

RR. Sch. 853 Top Water Outlet Pipes - Front Outlet ....
Detail drawings completed and issued ........ 30.3.35.

RR. Sch. 854 Oil Pipes to Camshaft, Redn. Gear and V.P.Prop.
Detail drawings completed and issued ........ 13.4.35.

RR. Sch. 863 Modification to S/charger Rear Bearing Breather.
Drawing alteration issued ................. 13.5.35.

RR. Sch. 865 Modification to Oil Pump Casing.
Drawing alteration issued ................. 15.5.35.

DES. 2461 Modfn. to Gearbox - Electric Starter.
Detail drawings completed and issued ...... Recd. 15.5.35.
21.5.35.

DES. 2467 Oil Supply to Supercharger Drive ......... Recd. 17.5.35.
Detail drawings completed and issued ........ 1.6.35.

DES. 2470 Tooth Forms for 1st. Train of S/R.{Sir Henry Royce} Drive.
(45/15 Ratio). Detail drawings completed & issued 1.6.35.
  
  


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