The high speed ignition miss is gone after we installed an 18 volt battery
for the complete Motec system including the ignition system.
The prop tips are going transonic (8000 engine RPM and 2600 prop RPM)
at only 72% throttle opening and 60 inches of HG manifold pressure.
The intake manifold blow off valve is probably set to around 80 inches
of Hg.
More throttle opening and more boost will just fight the stone wall
drag on the prop tips. The thrust will not increase appreciably.
Here is the data out of the Motec 800 EFI system.
The logged data chart is attached.
The manual waste gate was wide open and there is still a 1.25 inch
diameter vent hole
in the exhaust manifold. We are still only using some of the
extraordinary potential
of this engine. I would say less than half of the potential energy in
the exhaust.
IMHO the prop blade area is too small. We need wider blades or a
4 bladed prop. However it is climbing so fast we may still get the record
with this prop.
The airplane was gone out of sight in less than a minute. It got up to
5500 feet but we did not have a camera in the cockpit this time
monitoring the altimeter..
The RV8 chase plane with Kelly Vogel flying lost it. It was out of sight
before he got off the ground. He was delayed by about a minute
taking off by the tower.
We are now up to six flights.
Paul Lamar
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