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Actual data taken on 13-B Water pump at 3 different rpm values. Driven with
a 3450 rpm table-saw motor with 3 different pulley sizes (2-5/8" , 4", 6")
driving the 3.7" water pump pulley. No evidence of belt slippage or motor
strain, however I did not use an electronic tach for the rpm measurements,
just calculations from the motor rating.
Pressure is measured at the outlet of the pump, before going back into the
barrel through ~ 6 feet of 1-1/4" corrugated sump pump hose.
Pump is supplied from barrel with ~20 feet of 1-1/4" corrugated sump pump
hose.
The barrel was positioned to provide neutral head in a static position,
however at the higher flow rates, there is clearly pressure drop in the
supply and discharge hose that helps restrict flow.
Bill Schertz
KIS Cruiser #4045
Water_pump_curve.gif
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