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 for the Peregrine No.4 Unit camshaft.
| Identifier | ExFiles\Box 169\4\ img161 | |
| Date | 25th May 1933 | |
| To Hs.{Lord Ernest Hives - Chair} from RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} RHC{R. H. Coverley - Production Engineer}/WSC{W. S. Cassel}2/AP.25.5.33. Peregrine No.4. Unit. Specification of the above Unit is revised as follows:- Passed to Test. 24.5.33. Previous Specification. Camshaft LOP.E.100112. Hs.{Lord Ernest Hives - Chair}633 Camshaft 105¹⁰ Removed. Revised Specification. Camshaft LOP.E.100112. 1-New Hs.{Lord Ernest Hives - Chair}968 Camshaft 1080 fitted with .020 tappet clearance. I.O 4⁰ P.T.D.C. E.C. T.D.C. RHC{R. H. Coverley - Production Engineer}/WSC.{W. S. Cassel} | ||