The next run is today at 2PM

 The rough running is normal with a p-port. P-ports have a lot of
 valve overlap at speeds less than 4500 RPM.

 The smoke was probably caused by no restriction in the oil feed to
 the TC bearing. The oil pressure was 130 PSI.

 My mistake.

 Consensus from  friends say there should be a .040" dia. restrict-or
 in there. So I made one on the lathe and put it in the fitting on
 top of the turbo charger bearing unit.

 That should cut most of the smoke.

 It has twice the power to weight ratio and half the size as the PT6
 powered Legend and that will climb at 6,500 feet per minute.

 From that point of view ours should climb at 13,000 feet per minute
 easily beating the Bear Cat record of 10,000 feet in a minute and a
 half.

 Here is a screen shot of the Motec EFI Data log. The Motec EFI
 records the data at 10 records per second. Think of it as a airline
 black box.

 The curious thing is the intake air temperature actually went down
 as the engine ran just above idle at 2300 RPM. Prop RPM  was 760.

 The next test will be a full power run well tied down on the back of
 a flat bed tow truck at 45 degrees angle of attack to check all the
 pump functions.

 The video is low rez that is the only way to get the file size down
 to email.

 Here is the PT6 Legend taking off.

 Paul Lamar

 Valve overlap????????

 Your videos don’t open for me.  What format are you sending? Thanks.
 John Dinkel

 That is because you are using an Apple John. Probably an old Apple
 :-)

 Here is todays run. We got it up to 3200 RPM. No smoke.

 We cleaned the normal plugs and it started on the first blade. Just
 like my RX8 does.

 Next step is put the wings on and run it at full power.

 This engine is half the weight and size of a PT6 engine so it will
 fit  in a much smaller airplane that is  half the weight of a PT6
 powered airplane.



 Paul Lamar


Paul,
Great job! Looking forward to seeing it flying. Pretty exciting project.

Ray Hellstrom


Thanks Ray.

 This has wide spread implications in the aircraft engine manufacturing  community.
The question is how long is it going to take before the market wakes up.
Perhaps the time to climb record will help. As we are getting experience
with this engine I am getting the impression a Reno racer version would
not be all that hard to do.

Paul Lamar

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