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 revisions for Engine Unit No. 21, Chassis 25-EX, detailing changes to the flywheel, clutch, and servo mechanism.
| Identifier | ExFiles\Box 169\1\ img149 | |
| Date | 19th February 1931 | |
| To Hs.{Lord Ernest Hives - Chair} from RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} Engine Unit No. 21 (L.H. Chassis 25-EX). Specifications of the above Unit issued in RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}6/LS.3.2.31. & RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}5/LS.4.2.31. are revised as follows:- Passed to Test 7.2.31. Previous Specification Flywheel & Clutch. Alum. Flywheel Cover & Alum. Pressure Ring to Drg. Ex.5816. Removed. Revised Specification Flywheel & Clutch to LOP. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 78478 Clutch Cover and Friction Plate removed 30.1.31. re-fitted. Servo Mechn: to LOP. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 77669. Servo re-lined with Cotton "A" Fabric. RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} | ||