12
https://www.youtube.com/watch?v=ueI4xhgTGv8
https://vimeo.com/238287555
Paul Lamar
Paul, I got 2 minutes , 13 seconds. That is very impressive. What
now?
Steve Carlisle
We need a better prop. A six blade ground adjustable Warp
drive would
do it I think. We could up the 60 Hg boost with a better prop
and get
30% more thrust according to two different sources. Wider
blades or
more blades. Back in WW II that was discovered by the builders
of the
P47. Mentioned in a book called P-47 Thunderbolt Combat
Missions by
Jonathan Bernstein.
Rarely do you get the right prop when you order a fixed pitch prop
from the few fixed pitch prop makers left. We have known this
for 20
years. That is why I recommend a ground adjustable prop.
There are
about half a dozen prop makers now making ground adjustable props
based on the warp drive hub. Including venerable Sensinich.
Other than that I don't know. They have some problems with
the oil
pressure. I made some suggestions and Dan got angry and
refused to do
anything about it. I am getting the impressions that they are not
really committed to this.
Russ is senile if not Alzheimer's. The last time I saw him
about 2
years ago in Oz he was not coherent.
His son is now in charge of paying the bills. He is not a
rotor head
and thinks people are influencing his father to waist money on
silly
automotive based technical projects.
When I first met Russ about 5 or 6 years ago here in California we
did not talk about setting any records or anything like that.
He was
just another rotor head. He had been on the news letter for a long
time. Then I saw him in Oz and he invited us to stay at his
apartment. I still had no indication he was going to do this
project.
Then I found out he had contracted Racing Beat to do this
project. I
then started to upload messages about it on the newsletter so
if you
kept all those it would be well documented.
He hired an engineer to manage it. I visited Racing beat and the
engine was far along. Russ had bought a Harmon rocket and it
was out
in a hangar in Corona airport. The prop was at Racing Beat.
Kind of
premature to buy a prop IMHO. Turned out the HP specs on the prop
were wrong. Too weak so to speak.
Then the project arrived at SZP to my surprise. I then got
involved.
There were conflicts with the gear box configuration, coupling and
other engineering problems. The engineer was fired and we
changed the
gear box configuration and I designed an effective coupling.
Then there were problems with the turbo and the waist gate.
The turbo
looked like it came out of somebodies junk box. They bought a new
turbo and I redesigned and reconstructed the junk waste gate to a
manual control. I was not getting paid. I volunteered to help.
Dan then successfully flew the air plane in Cal City. Then they
brought it back to SZP and Dan flew it here. Dan was not
comfortable
flying it in SZP because it was not surrounded by land
suitable for
forced landings. Then Dan flew it to Oxnard a safer location.
There were a lot of problems with the wiring. Dan installed a
lithium iron battery and that failed by shorting out killing the
voltage the voltage to the Motec so the engine refused to
start. Dan
used all white wire with no markings and no schematic. It took
many
hours for me to sort that out. Don't do that. At least use
colored or
labeled wire for different things.
Now we discovered we have oil pressure problems. There is a
low cost
fix but Dan got angry for some strange reason and did not
want to do
it when I suggested them. I am not really sure what is going on
now.
Here is the problem with the oil pickup. You can see the oil
pressure drop in the Video. It is on the lower right part of the
screen. I think the pump is cavatating. Nils agrees. You can
see that
in the Motec data logging as a scratchy line.
Here are my suggestions for fixing the problem.
I think that stupidly long six inch diameter sump tank came from
Racing Beat's junk box along with the turbo and the waste
gate :-)
I just wanted to cut it off and weld on a flat plate bottom.
Paul Lamar
I was wondering about a smaller diameter prop using wider blades.
I know that you do not want to think about a CS prop, but that
might solve a problem. And I know it won't be cheap to put on
there.
Let's say that you get a wide 4 blade prop at 72" dia ground
adjustable. How fast would you have to spin that to get into the
trans-sonic arena? Would that allow you to go full throttle by
rotation?
And, yes, by all means at least tip the wires with some color
and/or tag them at both ends. And draw some semblance of a
schematic. Now I know why you were a bit unhappy with the wiring.
Is it possible to get a vertical speed indicator that could show
8000 FPM (given costs)?
One could use that to set the air speed?
Regards,
Steve Thompson
Anything is possible :-)
The Warp drive is 74 inches verses 84 for the prop we have.
That in of it self would allow about 9000 RPM with the same
boost and an
increment
of HP of course.
Yes it would be nice to have a rate of climb indicator.
--------------------------------------------------------------------------
BTW Youtube now owned by Google censored my comments.
It is time for google to be declared an illegal monopoly and
fined and disabled.
The Chinese government has it right for a change.
If you upload anything to youtube screen capture everything so you
can prove they censored.
Paul Lamar
I could be wrong this is just a observation, but I think a
regular properly sized wastegate would help get the power in quicker you
seem to be loosing a decent amount of time on the ground roll and take
off and then when the power gets in it climbs like a raped ape. I also
know this is just testing and your not throwing everything at it, like
you would for the record attempt. I am with you, your defiantly loosing
some thrust in the prop, 60" of manifold pressure is nothing for a race
piston engine let alone a built rotary that's only 15 psi of boost in
regular terms.
I think with a new prop and 80 inches of map it will annihilate the
record. According to my calculator and the warpdrive calculator at the
speeds your climbing the current 84" prop is good to 2800 prop rpm or
8400 engine rpm whith a 3 to1 gear box which is around .91 mach right
before it really looses efficiency. Its hard to read the rpms in the
video I was curious to what rpm you were climbing at and how high the
rpms got at max altitude?
Thanks, Jacob Sturges
Dan is not using full power to take off. He is keeping the wheels
on the ground
to keep it from rolling over or pitching over. When tied down it
will come up to
full power in a few seconds.
We may got up to 8,400 at the top of the climb. The engine will go
to 11,000 RPM
no problem.
Paul Lamar
I could hear it wasn't full throttle till about 50' to 100' in the air
and I was wondering if it was too much too fast with manual wastegate. I
was thinking it would be easier to get the power in quicker with a
regular wastegate and be able to focus more on flying and less on engine
management, but I defiantly like the manual wastegate and the way you
designed it is impressive. I would not mind having that and a regular
wastegate set at max manifold pressure on the turbo 540 were doing. I
really hope you can talk then into a new prop, it sounds to be really
limiting you, sounds like the engine has whole lot more power left in it.
Thanks,
Jacob Sturges
We are not using the waste gate yet. It is 60 inches of Hg manifold
pressure with the waste gate
wide open. Not only that there is a 1.25 inch hole in the exhaust manifold.
The rotary has a tremendous amount of energy in the exhaust.
My guess is there is as much energy in the exhaust as comes out of the
e-shaft. In our case about 650HP worth. Typical of all engines but the
Wankel does not have exhaust valves to mitigate it.
http://www.rotaryeng.net/turbo-compound.html
Paul Lamar
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