Jay ----------  Managed to fly the Seahawker on Friday. As some of you
may know the Seahawker was  designed and  built by Gary Legare who had
also built the original Q2.

  Mine has a 2.5 Subaru for power.  I had installed VGs on the pylon and
the rear stab to try to solve a waddle problem.

The airplane is real stable on the runway, but on climb out it still
wants to waddle. I found keeping my feet on the rudder pedals and
applying  equal pressure helps. Gear up is a bit better but still not great.

  If you go to you tube and type in GlassGoose homebuilt, you will see a
few videos of a plane from NB Canada.

On takeoff and landing you will see him waddle also and I don't notice
any wind.

  I think I need to keep more power on final to give me a bit more
control. I even tighten up the pressure on my nose wheel figuring it is
acting like a rudder and flop around on final. Haven't tried it yet.

   There doesn't seem to be any user groups for the airplane, and
considering the combined knowledge of this group, maybe you can help.

  Anyone have any Lake Renegade experience.

  I am reaching out, but I  can't find any others. I'll keep trying and
see if I can solve my problem.

  With the gear up I only saw 85 mph , but the engine was loafing at
4,000 rpm. I am good for 5500 rpm, but could easily overrev, so I
repitched the prop.  I think a real world cruise would be 110 MPH. A
little off the 140 cruise advertised.

  On a bright note----------  The airplane is reusable.

  If anyone thinks this is not the site to discuss this, let me know and
I will contact Jay directly.  Enjoy your Sunday---------- Chris


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Hi Chris,

I have flown in a Sea hawker which was based in Ramona - I almost bought it too. I have a Seaplane rating (Lake Buccaneer) and owned an flew a Searey for a couple of years. I also owned a Q2 in the ‘80s, built a LongEz,  and currently own a Cozy4 and a Berkut.

The SeaHawker/GlassGoose has always fascinated me, and I think that being an “orphan” design, they didnt get fully developed, with each builder being left alone to plough a lone furrough.

The “waddle” AFAIK, comes from the flow past the pylon becoming detached and re-attached, casing a yaw effect. The pylon VGs were an attempt to fix this. I often wonder how the Icon dealt with that characteristic - or maybe they didn't….

Best,

Bill Allen

On Sun, 14 Aug 2022 at 19:16, Chris Walterson <dkeats@...> wrote:

  Jay ----------  Managed to fly the Seahawker on Friday. As some of you
may know the Seahawker was  designed and  built by Gary Legare who had
also built the original Q2.

  Mine has a 2.5 Subaru for power.  I had installed VGs on the pylon and
the rear stab to try to solve a waddle problem.

The airplane is real stable on the runway, but on climb out it still
wants to waddle. I found keeping my feet on the rudder pedals and
applying  equal pressure helps. Gear up is a bit better but still not great.

  If you go to you tube and type in GlassGoose homebuilt, you will see a
few videos of a plane from NB Canada.

On takeoff and landing you will see him waddle also and I don't notice
any wind.

  I think I need to keep more power on final to give me a bit more
control. I even tighten up the pressure on my nose wheel figuring it is
acting like a rudder and flop around on final. Haven't tried it yet.

   There doesn't seem to be any user groups for the airplane, and
considering the combined knowledge of this group, maybe you can help.

  Anyone have any Lake Renegade experience.

  I am reaching out, but I  can't find any others. I'll keep trying and
see if I can solve my problem.

  With the gear up I only saw 85 mph , but the engine was loafing at
4,000 rpm. I am good for 5500 rpm, but could easily overrev, so I
repitched the prop.  I think a real world cruise would be 110 MPH. A
little off the 140 cruise advertised.

  On a bright note----------  The airplane is reusable.

  If anyone thinks this is not the site to discuss this, let me know and
I will contact Jay directly.  Enjoy your Sunday---------- Chris


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It would be interesting to "tuft" the plane and see the various air flows and how they interact with each other................swirling air from the prop, air coming off the fuselage, both wings, etc.

My $.02 worth
Steve

  Bill and Steve--------  I had followed the tuft testing by Sandy
McNabb. He was using a Vane in the demo and I would like to use VGs if
possible. In a few of the pictures I found they are using interesting
VGs that are V shaped  rather than open at both ends and look as if they
are installed backwards.

I installed some homemade VG as per the way we install them on the GU
canard.  Didn't work and may of made it worse.

  Heading back to the airport to remove them. I have ordered ECOFINS 
for transport trucks and RVs. There is a real good video that
demonstrated them working and they seem to be installed backwards also. 
Open end forward.

  Hope to get them within a week, so I will keep you informed. 32 hrs on
the Q--- no issues other than my friends say they can hear me for
miles.  3 blade Warp drive turning 3500 rpm is far from stealth. Take
care----------  Chris


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