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 document for Chassis 23-EX (Unit No. 11), detailing changes to induction and exhaust systems.
| Identifier | ExFiles\Box 169\1\ img030 | |
| Date | 16th January 1930 | |
| To [illegible] from RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} X4663 RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}17/MS16.1.30. Chassis 23-EX (Unit No.11). Specification of above Chassis issued in RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}14/MS.5.12.29. is revised as follows:- Passed to Test 7.1.30. Previous Specification. Induction Pipes to LOP.E.77653. Jacketed Induction Bend E.78895 (Aluminium) arranged for Exhaust Heated removed. Exhaust Fittings to LOP.E.79108. Return Feed Pipe to Front end of Rear Silencer removed. Revised Specification. Induction Pipes to LOP.E.77653. Exhaust Heated Jacketted Induction Bend E.80010 (Cast Iron) with Feed Pipe E.80194 (Cast Iron) fitted. Exhaust Fittings to LOP.E.79108 Silencer for Exhaust Heated Jacketted Induction Bend to N.S.4003 fitted. Passed to Test 10.1.30. Exhaust Fittings to LOP.E.79108 & N.S.4003. Pipe and Baffle having 30 holes removed. Exhaust Fittings to LOP.E.79108 & N.S.4003. N.Scheme 4003 further modified per Mr. Lidsey's instructions by having 45 holes (instead of 30) in Pipe and Baffle. RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} | ||