I like this system the best for the simple reason that for a given
cowlheight you can get a higher fluid level than with any simple
pressurizedsystem. The coolant level is right up there under the
pressure rad cap.
No air space required. Furthermore you can get along with a two
quart P-can. No 50 psi two gallon P-cans required.
All parts are off the automotive parts shelf including some real
fancy P-cans with sight glasses.
http://www.cantonracingproducts.com/tanks/expansion_tanks.html
The bottom of the P-can is connected to the lowest pressure point
in the system. Namely the intake side of the water pump. Pressure is
higher
everywhere else in the system. Bubbles and fluid from the vent line
arehighly encouraged to flow to the top of the P-can because the
top of the
block
is relatively a high pressure area.
There are no loops that can trap air when filling the system.
--
Paul Lamar ...No rotor no motor.
Paul,
Assuming the radiator is angled down in the rear, wouldn't you want
theswirl tank tap to be on the other end of the radiator. That's
how I did
my system and it appears to be working well, but then it is a
cross-flow, not a dual pass design.
Mark S.
Wow! Looking good Mark. I like your plenum, intake manifold and TB.
Thatis a 3 rotor
right? Is that a Hoffman or MT CS prop control on the snout of the
PSRU?Lancair ES? There will be a lot of people eating their hearts
out over
your airplane me included.
As far as the P-can is concerned you may not need anything depending
on how the water lines are run on the other side. Got some more
picturesof the other side? You can send hi rez and I can size them
to suit
publishing.
Paul Lamar ...No rotor no motor.
Here are a couple more pictures (sorry about the blue tint on the
secondone... wrong camera setting). Sorry, but I don't have any
pictureshandy showing the swirl tank (firewall mounted) or the
overflow tank
(also firewall mounted). The swirl tank if fed by the line coming
fromthe upper corner of the radiator, and returns from the bottom
of the
tank to the wp inlet. It has a level switch. Instrumentation
includescoolant level, coolant pressure, and coolant temp.
Yes, the brush holder is for the M/T electric 3-blade prop. You
shouldrecognize the bellmouth/injector castings, they are from the
batch you
made up a few years back. The throttle body is a Mustang 100mm unit
from Holly made "for off-road use only". It will be fed by ram air
fromthe right inlet. The psru plate is a custom "9 o'clock" unit,
courtesyof Bob Darrah. It has already created quite a stir at the
Lockhartairport, and it hasn't even flown yet. However, I've done
a couple of
run-ups which drew quite a crowd, only going to 4100 rpm as yet.
Commonopinion is that it sounds like a Rotax on steroids. Wait
'till they
hear it at 7500 rpm. I hope to be flying by this summer.
Mark S.
Lancair ES, N/A 20B
Wonderful work Mark. Congradulations. I love the Wiggins couplings.
Really nice intake manifold.
Looks like it is OK to tap the bottom of the P-can off the intake side
of the water pump. The way you have it will also work. Don't forget
the A-can. That is where the level sensor should go.
Paul Lamar ...No rotor no motor.
What are the pipe sizes, wall thickness and aluminum alloy in your
cooling system?
Scott Gettings
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