"Ignoramus23410" wrote in
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On Tue, 7 Jun 2005 00:25:11 -0400, Shawn shawn_75ATcomcastDOTnet
wrote:

"Ignoramus23410" wrote in
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...
On Mon, 06 Jun 2005 13:50:40 -0500, Duane Bozarth

wrote:
Ignoramus23410 wrote:


My main interest here is not even the increased flow -- the
current
throughput is adequate -- but mainly reducing the load on the
motor. It gets quite warm during operation. The extra flow will
be
merely a bonus.

i

If the pump is flowing more water then it is doing more work,
therefore it
will be drawing more current leading to a hotter running motor.
Use a clamp
on ammeter to see what it draws now and also what it draws with
the 1" hose
installed. I don't gamble much, but I would bet on this one.

Try this exercise. Take a drinking straw and try to breathe through
it. You will find it difficult and you will spend much energy
getting
a little bit of air through.

Then take a 1" ID pipe and try breathing through that.

Your throughput will be much greater but you will work LESS.

Same applies to a pump. Working against restriction wastes energy
and
reduces flow.

In fact, I installed new hoses, reinforced plastic type, tonight.
The
flow increased at least twice.

i


Of course it did-but if it's a centrifugal pump, increasing the outlet
restriction (reducing the flow) decreases the horsepower
requirement....