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Worked on the electric water pump test today.
One thing this thing won't do is suck up water when it is dry even if
there is no head. Pain in the butt. Of course the Mazda pump
probably won't do that either.

I got tired of getting a siphon going before I could start
the bucket to bucket test.

The 3/4 ID hose siphon alone will empty a five gallon bucket in 4

minutes.

When the pump is running it happens in 19 seconds or about 25 gallons
per minute with no back pressure. All down hill to the toilet.
When you put 5 psi back pressure on the EWP the flow slows way down
to 7 gallons a minute. No where near enough to cool a 13B.

I am working on adapting it to my closed loop flow meter system as

shown

in the second picture. The flow meter goes where you see the arrow.

Paul Lamar

Hi Paul,

One correction, 5 gal in 19 sec is closer to 15 GPM.

Bob White

Right Bob. I am getting old. I was not feeling well when I did
the arithmetic. Thanks for catching that. I'll just report
the data and let others do the arithmetic :)

The seven gallons per minute  took 42 seconds so I got that one right
in case you were wondering. I'll try to get some more closed loop data
today.

Paul Lamar

Paul - Has anyone calibrated the Mazda cooling jacket system for
effective ACd , and likewise for the radiator one would use. It
appears that we are just guessing on the flowrate vesus delta P
requirements - Vance

Would not matter anyway. 15 gal a minute won't cool a rotary.
The up side to this pump is it has the potential to improve
the gene pool. Aviation is a self cleaning oven :)


Not yet. I could rig that 5 HP motor over the engine and drive the pump
that way. I have the dyno engine rigged with pressure gages and the flow
meter. I just don't have it running yet.

Paul Lamar
 
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