Drive Centrifugal Water Pump Plans
is the high performance water pump I designed for my "Howell V-Four"
engine. Ordinary pumps have a shaft that enters the case to drive the
impeller. This requires a lubricated shaft seal to prevent leakage. In
miniature sizes it can be a challenge to have a seal that prevents
leaks, not create excessive friction on the shaft and be reliable over
long periods of time. I designed this pump to satisfy all these
requirements. There is no shaft that enters the pump case, so no seal
is needed at all. It takes very little power to turn even at
high water delivery rates. The pump housing internal has an easy to
produce simulated involute spiral shape with a cutwater for efficient
operation and high delivery. The pump is made almost entirely of brass.
I nickel plated mine for looks, but that has nothing at all to do with
operation or anything else.
The plans set consists of two sheets of drawings and one sheet of
Housing Diameter: 1.125", Housing
Thickness: .490", Impeller Diameter: .700", Suction &
Discharge, Port Diameters: .250"
|Materials Set: (1)
1-1/2" length of 1" dia. delrin rod to make pump cover, (1) 13/16" x
1/16" "O" ring cover seal, (2) 1/4" ID X 3/8" OD ball bearings for
drive pulley, (10) 1/8" dia. rare earth magnets to drive
impeller. Materials set sold separately.
a pleasure to do business with an honest man, thanks so much for the
$10.00 returned. I received the kit in good shape - the plans arrived
today and the drawings are beautiful. I feel as if I have gone back in
time to a period when quality was important." - Fred Bruce (Boca Raton,