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Old Oct 18, 2011, 01:29 PM
SagittaXC
Soquel CA.
Joined Feb 2007
146 Posts
Question
Halfbad Wing C.G.

Hi, I just bought a used HALFBAD 24" Flying Wing..It came with no instructions...Does anyone know the proper C.G. set-up for this? Thanks, Jack T.
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Old Oct 18, 2011, 02:28 PM
Crikey never leave beer behind
steve wenban's Avatar
Mt Annan Sydney Australia
Joined Dec 2003
23,030 Posts
PM time

Shoot Pismo a PM its his design
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Old Oct 18, 2011, 05:30 PM
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Xpress..'s Avatar
Joined Oct 2007
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Pismolope fer sher.
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Old Oct 18, 2011, 05:33 PM
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chip.greely's Avatar
Carlsbad, Ca
Joined Mar 2007
2,964 Posts
Jack,

Alot of info in this Half Bad build thread and I couldn't find the exact location but know I'd seen CG discussion in it.


Searched that thread and 4 1/2" look to be th strating point.

Enjoy it Jack!
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Old Oct 18, 2011, 06:58 PM
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1000MPH's Avatar
USA, NV, Reno
Joined May 2003
3,555 Posts
Yep. 4.5" is what's on the info sheet. Mine should finally be done this weekend.
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Old Oct 18, 2011, 08:00 PM
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chip.greely's Avatar
Carlsbad, Ca
Joined Mar 2007
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It does appear that several like to move the CG back and reduce elevator throws, but haven't seen anyone pontificate the supreme CG,....yet
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Old Oct 18, 2011, 08:07 PM
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robh's Avatar
Napa, California
Joined Jul 2006
2,564 Posts
Yep, 4.5" back. Mine is done and waiting for a maiden! Can't wait, it looks like it's going to be a ton of fun!
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Old Oct 18, 2011, 10:01 PM
Jim in San Diego
Pismo's Avatar
United States, CA, San Diego
Joined Nov 2002
4,090 Posts
Sorry for the late reply. Yep, it's 4.5" back from the LE at the root. I shot a PM as well.

Jim
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Old Oct 19, 2011, 06:46 AM
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meshyx's Avatar
Norway
Joined Feb 2010
602 Posts
I'm sure it flies well at 4.5", but you might find it interesting to plug the dimensions into this calc to see what CG range you could try out: http://fwcg.3dzone.dk/

I usually include the elevons in the wing size. This takes some fudging if you have a motor in the middle so that they are not full span.
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Old Oct 19, 2011, 10:46 AM
characters welcome!
Mark Wood's Avatar
United States, CA, Bear Valley Springs
Joined Feb 2000
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Motor?

mw
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Old Oct 19, 2011, 10:52 AM
Lost at LAX
Old Fart's Avatar
United States, CA, Torrance
Joined Dec 2005
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Quote:
Originally Posted by Mark Wood View Post
Motor?

mw
Heresy!

(get a rope!)
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Old Oct 19, 2011, 03:21 PM
SagittaXC
Soquel CA.
Joined Feb 2007
146 Posts
Thanks Everybody!!!

Thanks for all the great input!!! Everything is a tight fit, removed R/X casing for seamless install...........I'm now praying for wind this weekend!!! J.T.
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Old Oct 19, 2011, 10:04 PM
Aerobatics!
JGAF's Avatar
United States, CA, Carlsbad
Joined Nov 2007
2,364 Posts
Hope she works out for you Jack! Did you have to add much lead at all to get the right CG? It seemed to be balanced just fine without any when I had it.

Justin
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