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).
Blueprint graph of a governor advance curve for a DCD.838 distributor, including spring particulars.
| Identifier | ExFiles\Box 168\3\ img161 | |
| Date | 25th March 1939 | |
| DEGREES ADVANCE G.A. 21 DISTRIBUTOR DCD.838 GOVERNOR DW. 814. GOVERNOR ADVANCE CURVE OF R.R. DISTRIBUTOR TO DCD 838 (P.R.L.I) SPRINGS FITTED TO SUIT B.V. LIMITS FOR W.I.I. No.9 DECREASING SPEED INCREASING SPEED LIMIT SPRING PARTICULARS 1ST .028" DIA WIRE 8 1/4 COILS OUTSIDE DIA .187" OVERALL LENGTH .940" 2ND .048" DIA WIRE 7 COILS OUTSIDE DIA .206" OVERALL LENGTH .915" CAM BREAK PERIOD D.{John DeLooze - Company Secretary} 21°. I. O.{Mr Oldham} 1/2° E.{Mr Elliott - Chief Engineer} G.T 25-3-39 | ||