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Old Jan 02, 2013, 05:49 PM
3D Hack
JC Spohr's Avatar
United States, IL, Glen Carbon
Joined Jul 2010
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Quote:
Originally Posted by MaddSkillz View Post
What's it supposed to improve? It certainly looks cool!
Tail authority is preserved when the huge ailerons are deflected.

JC
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Old Jan 02, 2013, 06:02 PM
The Twisted Elf
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USA, NJ, Trenton
Joined Nov 2010
453 Posts
thanks JC
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Old Jan 02, 2013, 09:22 PM
Intergalctic Coffee Enthusiast
MaddSkillz's Avatar
United States, OK, Tulsa
Joined Jun 2011
1,419 Posts
Quote:
Originally Posted by JC Spohr View Post
Tail authority is preserved when the huge ailerons are deflected.

JC
Ahhhh!!!! That's pretty amazing!
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Old Jan 02, 2013, 09:58 PM
SoCal fair weather flyer
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United States, CA, San Diego
Joined Jan 2012
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What is a VG?
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Old Jan 02, 2013, 10:25 PM
Twisted Do Nut!
KamikazePilot's Avatar
Fort Worth
Joined Dec 2010
2,382 Posts
Quote:
Originally Posted by Bloosee View Post
What is a VG?
Look here for more info.
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Old Jan 03, 2013, 06:41 AM
Registered User
Aviefly's Avatar
United Kingdom, Aviemore
Joined Feb 2005
3,244 Posts
It's actually VVG, variable vortex generators, the idea is the more the ailerons deflect the more effective they are. They create a vortex off the zig zagged section of the ailerons improving the air flow over the tail surfaces even when huge aileron movements are partially blocking the natural air flow. I'm even thinking of trying them on a completely different design, a delta winged, high tailed Polaris seaplane. The delta wing is great for high alfa and inverted is steady as a rock as the tail is in clean air but upright they rock like mad with the tail hidden behind the wing. I wonder if harrier performance is improved on the TH designs with the VVG's? any feedback?
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Old Jan 03, 2013, 06:49 AM
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Joined Mar 2006
119 Posts
Any word on when the Crack Yak Mini will be back in stock with the digital power combo?
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Old Jan 03, 2013, 07:23 AM
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United States, FL
Joined Aug 2008
4,239 Posts
We are aiming for later on this week or early next.
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Old Jan 03, 2013, 09:18 AM
Intergalctic Coffee Enthusiast
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United States, OK, Tulsa
Joined Jun 2011
1,419 Posts
Hmm, maybe I could add the VG's on my Crack Yak.
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Old Jan 03, 2013, 09:27 AM
Registered User
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Joined Mar 2006
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Quote:
Originally Posted by Twisted Realm View Post
We are aiming for later on this week or early next.
Thanks! I'm looking forward to getting one!
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Old Jan 03, 2013, 10:11 AM
Registered User
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USA, CA, Mountain View
Joined Dec 2007
933 Posts
Stationary rolling harrier into the wind with the Crack Pitts 12 by my flying buddy, Jeff.

Crack Pitts 12 Stationary Rolling Harrier (1 min 5 sec)
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Old Jan 03, 2013, 10:25 AM
Intergalctic Coffee Enthusiast
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United States, OK, Tulsa
Joined Jun 2011
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Quote:
Originally Posted by 7rider View Post
Stationary rolling harrier into the wind with the Crack Pitts 12 by my flying buddy, Jeff.

http://youtu.be/TY7YWLmDXWE
Very cool! The Pitts is my next plane, actually! Probably ordering it next week!
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Old Jan 03, 2013, 10:28 AM
Registered User
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United States, SC, Irmo
Joined Mar 2012
2,494 Posts
Great video. You don't see a stationary KE everyday. I love these TH planes in the wind. The wind just makes it more fun. Thanks for posting the video and nice flying.

Tom
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Old Jan 03, 2013, 10:46 AM
aka ECAA3D
m0dest's Avatar
United States, WA, Olympia
Joined Apr 2012
1,154 Posts
I'm going to give the VGs a shot. I have 2 CYLs so might as well. Can't hurt too much.


Quote:
Originally Posted by carr52 View Post
Great video. You don't see a stationary KE everyday.

Tom
What I was told is it is unnatural.
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Old Jan 03, 2013, 12:56 PM
The Twisted Elf
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USA, NJ, Trenton
Joined Nov 2010
453 Posts
for the guys that are concerned about servo replacement,you can install your servo then when all finished use packing tape on both sides of the servo to hold it into place,it holds pretty good and will be easy to remove later if you have a problem,i will take pictures to show you later,i haven't done it to my plane yet but did it to a friends,which i will see tomorrow night and he loves the plane,just doing some real flight testing with it ,he said that he doesnt feel any difference between the plane with tape and the one with glue
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