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).
Drawing showing the design and principles of a spark advance and carburettor control system.
| Identifier | ExFiles\Box 41\4\ Scan017 | |
| Date | 28th January 1930 | |
| DRAWING NO. SK 286 SEE ALSO THE FOLLOWING OPERATION DRAWINGS TOO EARLY IGNITION CORRECT IGNITION & MIXTURE LATE IGNITION LEAN OR RICH MIXTURE 5° RANGE OF "SAMPLES" "SAMPLING" VALVES .150 DIA x .007 LIFT TDC 80° down firing stroke CAMS ON IGNITION SPINDLE OPERATING "SAMPLING" VALVES RUBBER DIAPHRAGMS USED ON EXPL CAR INTAKE VACUUM ADVANCE RETARD IGNITION HEAD RICHNESS CONTROL ON CARBURETTER SPARK ADVANCE BEST LEVEL ROAD ADVANCE BEST FULL THROTTLE ADVANCE RPM 500 1000 1500 2000 2500 3000 JAN 28 1930 REPLACE ALL COPIES TO D.O. OFF. M.{Mr Moon / Mr Moore} WORKS W.M. A.{Mr Adams} INSP. BREW. ROLLS-ROYCE OF AMERICA, INC. Drawn by Traced by Checked by Approved by Limits Date F B 4/29 Weight Model Sec. SCALE HEAT TREAT BRINELL STANTON MACHINE ALL OVER MACHINE WHERE MARKED TITLE: Stanton Spark Advance & Carburetter Control MATERIAL SPECIFICATION NO. OFF DRAWING NO. SK 286 | ||