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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).
Specification revision notice for a Merlin II engine unit, comparing previous and revised component specifications.

Identifier  ExFiles\Box 169\4\  img100
Date  30th September 1932
  
To Hs.{Lord Ernest Hives - Chair} from RRC/VSC.
or Hs.{Lord Ernest Hives - Chair}
By WH.
or FD.{Frank Dodd - Bodies}

RRC/TSC13/IS.30.9.32.

MERLIN II - NO.1.UNIT - (1-Per.II. CHASSIS.)
specification of the above Unit is revised as follows.-

PHANTOM TO TEST 28.9.32.

Previous Specification.
Crankcase & Bearings IOP. E.100293.

Flywheel & Clutch IOP.G1C0500.
12-G.100479 Driving Blocks - Rubber - removed.

Servo Motor Mechn IOP.G.100655.
1-G.100589 Servo Shaft-Inner Pressure Plate - having under-cut.
G.100588 Friction lining - R.A.D.13 - removed.

Distributor IOP.D.53054.
Complete to the above IOP. removed.

Revised Specification.
Crankcase & Bearings IOP.E.100293.
The following details fitted incorporating LeC.3191 Extra Bearing at Front End of C'shaft.
Ex.7281 Housing - Alum.
Ex.7285 Mod. to Damper Hub.
Ex.7289 Mod. to R.100146-Front Cover.
Ex.7286 Cover.

Flywheel & Clutch IOP.G.100500.
12-Hs.{Lord Ernest Hives - Chair}713 Driving Springs.

Servo Motor Mechn IOP.G.100655.
New G.100589 Servo Shaft-Inner Pressure Plate- to latest Drg. ie., deletion of undercut.
Servo Motor Lined with - V.D.M.20 Lining.

Distributor IOP.D.53054.
New Distributor modified by altering position of F.T.Rotor Tip reletive to Distributor segments at position of "break" the

RRC/VSC.
  
  


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