I'm finishing up
ground runs on my 1988 13B using the EM3 EC3 before closing everything up to
install the biplane wings..
Wanted to be sure
the 5/32" ID silicon tube was connected to the right place in the AQM. I
configured a manometer to the steam gages in the front and rear
cockpits
an observed about
3.3 inches of water gives a reading of 80 mph. So far so good.
Then I tried to check what this pressure would do with the aqm (EM3) and found
no change in
the near zero true
air speed EM3 reading. In fact there seems to be a bleed-off of
pressure so I cannot hold a steady 3.3" pressure on the EM3 to measure
anything. Did I spend $ 28 to get this silicon tube for naught or am I
confused about the one pitot and two static ports on this
AQM?
And then
again..the water temp was about 165 without the cowl, but on the latest
ground run the temp ran 188 degrees and climbing..gurss ya have to fly
in to know...problem is the three pass19" X 20" X 2" radiator is some four
inches below the steam chamber and water fill cap so at 17 inches of pressure
indicated (EM3) coolent spewes out liberally from the radiator cap.. Can
I add rubber washers to this cap or should I toss it away and weld up
that racing radiator cap location? The water after radiator temp
registered 30 degrees below the engine out water.. is this
enough?
Wishing you all
had problems so basic as mine!
Randy
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