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Red Duck - 4/11/2008 7:17:11 AM   
Remby


 

Posts: 621
Joined: 11/2/2002
From: Russell, PA, USA
Status: offline 		Getting this ready to go, RCU has no catagory to place the picture in. 1/2a can be so cool, without a ton of work.

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1/2a flyer !
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RE: Red Duck - 4/11/2008 2:28:40 PM   
combatpigg



Posts: 9812
Joined: 11/22/2003
From: arlington, WA, USA
Status: online 		Looks like it should fly OK......I'm always curious about how well these fly. Good luck!

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Led Zeppelin is NOT "old fogie" music.

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RE: Red Duck - 4/11/2008 3:35:18 PM   
dieFluggeister



Posts: 665
Joined: 3/10/2004
From: New London, MN, USA
Status: offline 		I love the trim job! Very nice Remby.

Where did it balance out? I have never flown a canard so I am very interested to hear your report. I like your daring use of rudder for roll control! Hats off to you!

(in reply to Remby)
       Post #: 3

RE: Red Duck - 4/11/2008 5:48:53 PM   
Remby


 

Posts: 621
Joined: 11/2/2002
From: Russell, PA, USA
Status: offline 		dieFluggeister;

Thanks for the note. It looks like around 1.5" ahead of the L.E., as far as the computer is giving. This is a modified Lazy Duck, it was in the 1984 issue of Model Aviation. His was a powered glider, this should be a bit more sporty powered glider.


Combatpigg;

It ain't built for speed, that much is given, I'll post a couple of flight pictures.

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RE: Red Duck - 4/11/2008 10:43:48 PM   
build light


 

Posts: 1423
Joined: 11/30/2005
From: Crete, NE, USA
Status: offline 		I like it lots!
I have always been attracted to the unusual and this fits the bill nicely.

I particularly like the forward facing engine on the verticle fin. I think most Canards similar to this are pushers. Creates an eye catching difference!

Good luck on the maiden.

Robert


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Keep'er light, and she will treat you right!

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       Post #: 5

RE: Red Duck - 4/11/2008 11:26:02 PM   
combatpigg



Posts: 9812
Joined: 11/22/2003
From: arlington, WA, USA
Status: online 		How much up thrust is called out?

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Led Zeppelin is NOT "old fogie" music.

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RE: Red Duck - 4/12/2008 4:21:17 AM   
Remby


 

Posts: 621
Joined: 11/2/2002
From: Russell, PA, USA
Status: offline 		Combatpigg;

The engine has a -2 Deg downthrust. Also, the carnad elevator is set at +3 Deg. Mind you, the plan calls for this, but this is not built to the plan @ one-to-one. The Six foot span was reduced to fit a 42" wing I had from another plane. The chord is wider. The body was reduced to keep it as close to the plan, but using the wing I already had.

This is my first carnad, it won't be my last.

build light;
Thats what I've seen as well, most are pushers. I have a few carnad plans, and this one is the only one that is like a trainer, so figured it was the one to try first.

I am sure it would take off from snow using just the body, and no gear. What other plane could do that?



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RE: Red Duck - 4/12/2008 4:26:01 AM   
OzMo



Posts: 1436
Joined: 9/2/2002
From: OZark, MO, USA
Status: offline 		way cool
can't wait for a flight report
what wing did you start with?

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Yes dear, I did glue my hand to the airplane to keep from dropping it.

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       Post #: 8

RE: Red Duck - 4/12/2008 4:39:08 AM   
DeviousDave


 

Posts: 434
Joined: 2/25/2007
From: , MI, USA
Status: offline 		Definitely in the running for a Roy Clough Award....

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RE: Red Duck - 4/12/2008 4:39:49 AM   
Remby


 

Posts: 621
Joined: 11/2/2002
From: Russell, PA, USA
Status: offline 		OzMo;

From the old Buzzard Buster I was flying three or four years ago. That plane died in a servo failure crash, but the wing survived. The pilot and windsceen are still where they were then, and he better not lean back!

In my gallery, look at the white and green one, thats the wing.

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RE: Red Duck - 4/12/2008 4:55:14 AM   
combatpigg



Posts: 9812
Joined: 11/22/2003
From: arlington, WA, USA
Status: online 		Remby, After posting my thrust question, I got to thinking that maybe my head was screwed on 180 out. Some upthrust makes sense.
The way that I've set thrust from scratch on a plane with [in my case] a real low thrust line was to trim the elevator for neutral and hold the model at the CG kind of loosely with the engine running full blast. I had a helper work the elevator while I held the plane and felt for the changes in pressure. Anyway, in this case I needed to crank in a lot of down thrust to come up with a neutral feel while the elevator was centered. The first flight was just about perfect after doing this simple test.

_____________________________

Led Zeppelin is NOT "old fogie" music.

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       Post #: 11

RE: Red Duck - 4/13/2008 12:59:15 AM   
Remby


 

Posts: 621
Joined: 11/2/2002
From: Russell, PA, USA
Status: offline 		Combatpigg;
I pretty much understood what you were asking.

Your idea is sound for the most part. on this model, it will not work for the elevator. Only it's action through the air will give the needed airflow over the carnad, no prop-wash from the engine.

But it will work for the rudder, and will give it a test before the real test.

Thanks to youins' for the kind words on the plane, I'll let you know how it goes, and will get a flight picture or two if all goes well.

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       Post #: 12

RE: Red Duck - 4/14/2008 7:35:39 PM   
Remby


 

Posts: 621
Joined: 11/2/2002
From: Russell, PA, USA
Status: offline 		"Definitely in the running for a Roy Clough Award...."

DeviousDave;
I resemble that remark!

Seriously, who is Roy?

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1/2a flyer !

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       Post #: 13

RE: Red Duck - 4/14/2008 7:46:27 PM   
old git


 

Posts: 706
Joined: 3/10/2004
From: BelvedereKent, UNITED KINGDOM
Status: offline 		Take a look at what is posted by dicknadine in the Vintage thread.

quote:

ORIGINAL: Remby

"Definitely in the running for a Roy Clough Award...."

DeviousDave;
I resemble that remark!

Seriously, who is Roy?


Dick is seemingly intent on building all of the Roy L Clough designs he can find.

They are really worth a look.



old git - - - - aka John L.

(in reply to Remby)
       Post #: 14

RE: Red Duck - 4/21/2008 5:44:16 AM   
Remby


 

Posts: 621
Joined: 11/2/2002
From: Russell, PA, USA
Status: offline 		Update on the Duck's flight attempt..

I balanced it at a forward point, close to the full forward position given on the computer. Started the engine, and let her go.

Once in the air, it acts like a Pelican and heads for the fish in the water. So, first flight, and we have roast duck. Damage not too bad, and this was fixed.

Next day, another go. The balance was shifted to the rear, the minimum given on the numbers. This time, the arc is larger, but still hungry for fish. The Duck bent it's beak.

Will take a bit to fix it, should still fly. Based on what is going on , it is the down thrust from the engine that is not correct.

When this was downsized,I had to push the engine higher on the rudder so the prop would clear. Thus, the engine is higher ,and causing the loop effect. I need to add more downthrust, right now it is -2 degs, and am not sure how to figure a correct thrust line. Any input from you'ins would be great, let me know what you think may help get it right.

And I can go with a 5*3 prop, and lower the mount if the downthrust deg idea flys south.

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1/2a flyer !

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