Lumenier RB2205C-12 2400KV SKITZO Ceramic Bearing Motor
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Old Feb 22, 2010, 10:55 AM
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JimmyMac!!!!!


Jim McNeal took second in Woody at the South West Classic flying his Yardbird...

Congratulations!

Jack Womack
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Old Feb 22, 2010, 11:14 AM
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Thanks Jack,

you know that old saying about using the right tool for the job!

Jimmy McNeal
Old Feb 23, 2010, 12:26 AM
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Hit my smoke....
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Need more CA ..... ya had to be there
Old Feb 23, 2010, 08:52 AM
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Quote:
Originally Posted by schrederman View Post
Jim McNeal took second in Woody at the South West Classic flying his Yardbird...

Congratulations!

Jack Womack
And I "woody" been 5th with my Yardbird had I had been properly signed up in that class, too. There's always next year... (woody, shouldy, couldy?)

Thanks, Jack, for your great coaching, and a great plane design!!!

Richard
Old Feb 23, 2010, 10:06 AM
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Need a new fuse


Nice to meet you Richard. Jack did a great thing drawing up the yardbird.
I'm planning on going to midsouth at the end of may.
I'm going to order an Ibis fuse like yours. Jack promised to draw me up some "contest winning" tail feathers!

Get busy Jack! I've only got 3 months to go. We know you can build a whole plane in a few weeks, but it will take me months to build a stabilizer! :-)
Old Feb 24, 2010, 01:46 AM
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Quote:
Originally Posted by jimmm3 View Post
Nice to meet you Richard. Jack did a great thing drawing up the yardbird.
I'm planning on going to midsouth at the end of may.
I'm going to order an Ibis fuse like yours. Jack promised to draw me up some "contest winning" tail feathers!

Get busy Jack! I've only got 3 months to go. We know you can build a whole plane in a few weeks, but it will take me months to build a stabilizer! :-)
Jimmy, Actually, the fuse I used was the Art Hobby Hi Aspect ES motor fuse and boom. Chances are that it might be identical to the Ibis, though--check their drawings. The saddle fits the wing perfectly. It came with the nose still on--ready to be sliced off before installation of a motor mount. The glider version has a slip-on nose cone.

If you still need a stab and empennage drawing, I have a pdf version--PM me if you need it. You'll need some scotch tape, though.
Old Jun 01, 2010, 02:17 AM
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Hello all,
Last week I finished building my yardbird wing. I am going to put it on a electric super ava fuselage with a tail of a bubble dancer.
Does any one know where I should have the staring point of center of gravity for thermal activity?
Thanks in advane
Old Jun 02, 2010, 08:17 AM
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Originally Posted by pakos_65 View Post
Hello all,
Last week I finished building my yardbird wing. I am going to put it on a electric super ava fuselage with a tail of a bubble dancer.
Does any one know where I should have the staring point of center of gravity for thermal activity?
Thanks in advane
Jack, in one of his posts (#373 https://www.rcgroups.com/forums/show...&postcount=373 ), recommends a starting point of 4 5/8 in. and flies at 4 7/8 inch. I think mine is at 4 1/2 inch, but I'm a less skillful pilot. It never hurts to be a little nose heavy until you can feel out the plane. A good hand toss/glide will tell you if you're in the right range. Never, ever, fly the plane tail heavy on it's maiden flight.
Old Jun 02, 2010, 11:36 AM
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Yeah... I have a tendency to fly with an aft CG position. Start at 4 1/2" and work back to your comfort zone...

Jack
Old Jun 04, 2010, 06:21 AM
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Thank you for your answers. I 'll do that.

I am going to put an electric motor on it.
What is better wing loading for this airfoil for best performance? There is a competition here in Greece (F8J-GR-BF1) which wins the heaviest model with the lightest battery after 30 minutes of flying.
I will post a few pics of my Yardbird when I can.
Last edited by pakos_65; Jun 13, 2010 at 02:33 PM.
Old Jun 04, 2010, 02:36 PM
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The Yardbird Flew well at MidSouth


My newly renovated Yardbird at the Midsouth Soaring Contest.

The Art Hobby IBIS fuse and custom Womack designed tail feathers really worked out well.

JimmyMac
Old Jun 04, 2010, 04:40 PM
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Lookin' GOOD JimmyMac!... Hey, the model ain't bad, either!

Jack
Old Jun 13, 2010, 01:12 PM
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My option of electric Yardbird, which today had its maiden flight. Great model Jack.
Though, on a dive test I had flutter on right wing....
Last edited by pakos_65; Jun 14, 2010 at 03:39 AM.
Old Jun 17, 2010, 03:49 AM
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Torn 'twixt buildin' and flyin
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Man, those are just purdy! (The planes. The planes!)
Nightowl
Old Sep 13, 2010, 05:39 AM
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How does the Ibis handle a winch launch on 1.4 mono ?? And really thinking about making it my light are thermaler ....


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