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).
Chart detailing vapor lock test results for an AC combination fuel pump and vacuum booster on a 1935 Pontiac Six.
| Identifier | ExFiles\Box 149\4\ scan0282 | |
| Date | 1st November 1935 | |
| VAPOR LOCK TESTS ON AC COMBINATION FUEL PUMP AND VACUUM BOOSTER ON 1935 PONTIAC SIX. Y-AXIS: REID VAPOR PRESSURE OF GASOLINE VALUES: 6 to 22 X-AXIS: ATMOSPHERIC TEMPERATURE °F VALUES: 50 to 100 DATA SERIES 1: COMBINATION WITH FUEL PUMP BELOW BOOSTER INSULATING GASKET BETWEEN FUEL PUMP AND CRANKCASE - FUEL PUMP SHIELDED BORDERLINE VAPOR LOCK AT 60-65 DURING ACCEL. ON LEVEL FOLLOWING 5 MIN. STOP WITH IGN. OFF. ALSO 4-8 MILE LOSS IN MAX. SPEED NO VAPOR LOCK ON 11% HILL NO VAPOR LOCK FOUND IN ANY TEST DATA POINT: 15.2 DATA SERIES 2: COMBINATION WITH FUEL PUMP ABOVE BOOSTER NO INSULATING GASKET NOR RADIATION SHIELD MOMENTARY VAPOR LOCK ON 11% HILL AFTER 5 MIN STOP WITH IGN. OFF. GASOLINES EQUIV. 9.0 LBS AT 100°F.{Mr Friese} DATA POINT: 10.1 DATA SERIES 3: 1935 PRODUCTION MOMENTARY CUTTING OUT ON 11% HILL AFTER 5 MIN. STOP WITH IGN. OFF. DATA POINT: 7.2 BOTTOM LEFT CORNER: JMC 11. 35 | ||