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Does anyone know Ugly stick what ones legal? - 6/28/2008 2:55:27 AM   
EpoweredRC



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From: PowderSprings, GA, USA
Status: offline 		Does anyone know what Ugly sticks are legal for the vintage pattern event?
it says on the list ugly stick ( all as same as orginal size)
but are any of the ARFS legal? or just the old old kits? does anyone know ? thanks



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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 3:03:50 AM   
rainedave



Posts: 5174
Joined: 7/21/2005
From: Greensboro, NC, USA
Status: online 		I would think the original Kraft version is for sure.

David

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< Message edited by rainedave -- 6/28/2008 3:05:32 AM >

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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 3:28:26 AM   
kitfox1


 

Posts: 13
Joined: 1/21/2008
From: Hephzibah, GA, USA
Status: offline 		Some thirteen years ago I flew ugly sticks in both the SPA sportsman and antique classes. Others also had ugly sticks and they came in all forms such as high wind, low wing, semi-symmetrical and symmetrical wings, and in some cases the tails did not look like the original design. The explanation was that there were many versions and that made them legal. I still have my old reliable ugly stick and I use it as a back up airplane at SPA contests. A properly trimmed ugly stick is a very competitive airplane. My antique ugly stick had a Super Tigre 40 and later an OS 70 which made it complete new airplane with plenty of power to spare. Send an e-mail to SPA founder Mr. Mickey Walker if you have any questions about what is legal for the antique class.

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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 3:51:24 AM   
EpoweredRC



Posts: 1120
Joined: 3/11/2003
From: PowderSprings, GA, USA
Status: offline 		Thanks, I plan to ask Mickey when I see him just thought I would post and see what people on here said I knwo they are many versions , now with the ultra sticks and such. I would love to have a big stick 40 or 60 they fly great. I miss my sweet stick, but mostly want something to fly in the vintage in Nov. And something I could fly for fun anytime.



quote:

ORIGINAL: kitfox1

Some thirteen years ago I flew ugly sticks in both the SPA sportsman and antique classes. Others also had ugly sticks and they came in all forms such as high wind, low wing, semi-symmetrical and symmetrical wings, and in some cases the tails did not look like the original design. The explanation was that there were many versions and that made them legal. I still have my old reliable ugly stick and I use it as a back up airplane at SPA contests. A properly trimmed ugly stick is a very competitive airplane. My antique ugly stick had a Super Tigre 40 and later an OS 70 which made it complete new airplane with plenty of power to spare. Send an e-mail to SPA founder Mr. Mickey Walker if you have any questions about what is legal for the antique class.



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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 4:15:03 AM   
Ed Cregger



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From: Ringgold, GA, USA
Status: offline 		I do remember that both of the GP Big Stiks (40 & 60) ARFs are legal in Antique.


Ed Cregger


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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 5:35:51 AM   
EpoweredRC



Posts: 1120
Joined: 3/11/2003
From: PowderSprings, GA, USA
Status: offline 		Thanks

quote:

ORIGINAL: Ed Cregger

I do remember that both of the GP Big Stiks (40 & 60) ARFs are legal in Antique.


Ed Cregger



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Mini Edge 540,BP Edge 540 profle ,MST, E rustler ,With DX2.0. /GF"S-Blade CX,Slow stick. A123 Batts all the way! 5 glow

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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 7:35:25 AM   
Roary m


 

Posts: 186
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From: lancaster, CA, USA
Status: offline 		Do they make you cut the scallops into the trailing edge of the control surfaces to make it legal?

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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 12:55:39 PM   
EpoweredRC



Posts: 1120
Joined: 3/11/2003
From: PowderSprings, GA, USA
Status: offline 		I don't know, but that is how I like my big sticks. don't look right w/o
quote:

ORIGINAL: Roary m

Do they make you cut the scallops into the trailing edge of the control surfaces to make it legal?



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Mini Edge 540,BP Edge 540 profle ,MST, E rustler ,With DX2.0. /GF"S-Blade CX,Slow stick. A123 Batts all the way! 5 glow

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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 2:11:06 PM   
kitfox1


 

Posts: 13
Joined: 1/21/2008
From: Hephzibah, GA, USA
Status: offline 		The trailing edges of the controls can be straight edges. My Ugly Sticks have straight edges on the ailerons and elevator. They also have rounded wing tips and they fall under the three percent deviation rule from the original plans. If you decide to build one put the fuel tank close to the CG. I use a Perry pump to feed the fuel to the engine. Also, put all the radio gear, control linkages, engine, propeller, spinner, etc and check the CG and then build a battery box compartment in the fuselage behind the wing trailing edge to balance the airplane. This eliminates the need to add weight to balance the airplane. The symmetrical airfoil wing is the better one for pattern, but the semi-symmetrical wing airfoil has better slow flight characteristics.

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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 5:29:59 PM   
Ed Cregger



Posts: 7736
Joined: 1/31/2002
From: Ringgold, GA, USA
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quote:

ORIGINAL: kitfox1

The trailing edges of the controls can be straight edges. My Ugly Sticks have straight edges on the ailerons and elevator. They also have rounded wing tips and they fall under the three percent deviation rule from the original plans. If you decide to build one put the fuel tank close to the CG. I use a Perry pump to feed the fuel to the engine. Also, put all the radio gear, control linkages, engine, propeller, spinner, etc and check the CG and then build a battery box compartment in the fuselage behind the wing trailing edge to balance the airplane. This eliminates the need to add weight to balance the airplane. The symmetrical airfoil wing is the better one for pattern, but the semi-symmetrical wing airfoil has better slow flight characteristics.






In all of my years in the hobby, I've never heard of an Ugly Stik variant that used a semisymmetrical airfoil, although I don't doubt that someone has tried it. Does anyone know of any particular model/kit/ARF that utlized a semisymmetrical airfoil? TIA


Ed Cregger


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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 5:40:23 PM   
Trisquire


 

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From: Columbus, OH, USA
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quote:

ORIGINAL: Ed Cregger

In all of my years in the hobby, I've never heard of an Ugly Stik variant that used a semisymmetrical airfoil, although I don't doubt that someone has tried it. Does anyone know of any particular model/kit/ARF that utlized a semisymmetrical airfoil? TIA


Ed Cregger


Ed, Take a look at the plan David posted above. The wing is not fully symmetrical. I had always assumed that the Aeromaster had symmetrical wings, until I saw one of David's pictures.

Tom

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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 5:45:39 PM   
UStik


 

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From: Augsburg, GERMANY
Status: offline 		Snippet from Phil Kraft's article and wing cross section from the plan, maybe this explains something...

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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 5:57:25 PM   
8178



Posts: 3015
Joined: 5/25/2004
From: _ , USA
Status: offline 		The original Jensen Ugly Stick has a sort-of semi-symmetrical airfoil. The bottom of the wing from the trailing edge to just behind the main spar is flat straight line. The top on the wing has a normal curve. I expect the did it for ease of building.

The SPA is using a looks like a “Duck” rule nowadays so they don’t have to monitor aircraft originality with plans and etc. That would be a complex time consuming thing to monitor and because the focus is on competition flying and not so much on the airframe there is no needed to mess with it and slow down the process. The idea is to fly, fly, fly and have fun!! So if the aircraft generally looks like a Stick from a hundred or so feet you are covered.


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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 6:28:03 PM   
rainedave



Posts: 5174
Joined: 7/21/2005
From: Greensboro, NC, USA
Status: online 		Here is a tracing of the top surface of the rib (in red) mirrored over the bottom surface (in purple). It actually is semisymmetrical.

David

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RE: Does anyone know Ugly stick what ones legal? - 6/28/2008 7:14:20 PM   
Ed Cregger



Posts: 7736
Joined: 1/31/2002
From: Ringgold, GA, USA
Status: offline 		Now that everyone has pointed it out, it is obvious. Frankly, when I first saw this in Dave' picture, I assumed it was just poor drafting. We all know about the word "assume".

I'm fairly certain that the Midwest Stik kits and later, were fully symmetrical. The difference in the original Kraft drawings from fully symmetrical would barely be noticable.

Sig and Balsa USA used to design some of their models with a flat area on the bottom of the airfoil between the main spar and the trailing edge spar. I didn't realize that it went back as far as Phil Kraft. Interesting.


Ed Cregger


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