Anyone built a Sig Liberty Sport  
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Anyone built a Sig Liberty Sport - 3/15/2003 10:06:58 PM   
Agman73


 

Posts: 15
Joined: 3/13/2003
From: Arkansas
Status: offline 		I just got a Sig Liberty Sport kit and I was wondering if anyone could tell me about it. I know that Sig kits are builders kits, I had a Sig J-3 once, gave up on it and someone else built it for me.

Thanks

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Aaron D
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Liberty sport - 3/16/2003 5:39:12 AM   
bash-ace-RCU



Posts: 351
Joined: 1/14/2002
From: APO, AE, USA
Status: offline 		I built one a long time ago, it was a lot of work. It builds fairly light and flies well (in a scale manor), but I wouldn't over power it, the way it builds up is to take advantage of silk and dope strength. If you want a nice scale looking bipe in the air, than it's worth the work. I wouldn't build another one due to my tastes in aircraft changing, I would probably charge someone about $300 for labor if I had to build another one.

(in reply to Agman73)
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Anyone built a Sig Liberty Sport - 3/16/2003 7:55:49 AM   
William Robison



Posts: 20269
Joined: 11/10/2002
From: Mary Esther, Florida, FL, USA
Status: offline 		Agman73


bash-ace has pointed out something to keep in mind when building the older Sig planes. They did indeed rely on the strength and stiffness of the covering. So if you use a film covering you need to reinforce the structure: use a lot of gussets.

Used film when covering my pretty Sig J-3 Cub.
. No gussets, was accordion time, no more Cub, Bub.

Bill.

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Anyone built a Sig Liberty Sport - 3/17/2003 4:10:40 AM   
GarySS


 

Posts: 1658
Joined: 4/11/2002
From: Center of the Flyover States,
Status: offline 		Which Cub was that William Robison, the small 1/6th scale?

(in reply to Agman73)
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Sig J-3 kit # RC-3 - 3/17/2003 4:37:24 AM   
William Robison



Posts: 20269
Joined: 11/10/2002
From: Mary Esther, Florida, FL, USA
Status: offline 		Gary:
[QUOTE]Originally posted by GarySS
Which Cub was that William Robison, the small 1/6th scale? [/QUOTE]
It was the 71" span, 2" to the foot, so I suppose that would be 1/6 scale.

But my couplet was intended to underline the recommendation to reinforce, the wing failure did not really happen. The plans have a note about film coverings, and I did add the strengthening items. I have a NIB RC-3, some day I'll get to it. The first one was sold several years ago.

Since we're all supposed to have a J-3 or two,
. As long as I have the kit I can say "Me too."

Bill.

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Anyone built a Sig Liberty Sport - 3/17/2003 9:45:09 AM   
CafeenMan



Posts: 3907
Joined: 1/19/2003
From: Spring Hill, FL, USA
Status: offline 		I have to disagree with that bit about relying on covering strength. Most Sig kits are way overbuilt. Sig always said that in their instruction, but those instructions were written back in the day when planes were designed to withstand impacts into buildings. It's all about throttle control.

I've never built the Liberty Sport, but I've built THREE Miniplanes and they're almost identical in construction technique. Other than the fact that I hate iron-on covering because it's just sub-standard crap, I would have no worries about your plane holding together if it were covered with it. But then I would never build an airplane like the Liberty Sport and do all that work just to cover it with plastic when I was done.

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Anyone built a Sig Liberty Sport - 3/17/2003 10:49:42 AM   
William Robison



Posts: 20269
Joined: 11/10/2002
From: Mary Esther, Florida, FL, USA
Status: offline 		Coffee Fueled Person: (Me too - Haw)
[QUOTE]Originally posted by CafeenMan
I have to disagree with that bit about relying on covering strength. Most Sig kits are way overbuilt. Sig always said that in their instruction...[/QUOTE]
I can't speak about the Liberty Sport, but the RC-3 Cub wing is very flimsy in bare bones. I also would not consider flying it without the wing struts.
[QUOTE]...I would never build an airplane like the Liberty Sport and do all that work just to cover it with plastic when I was done. [/QUOTE]
Here I agree completely.

Build your Cub with a plastic cover,
. Man, you're not a Cub lover!

Bill.

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Anyone built a Sig Liberty Sport - 3/17/2003 10:56:53 AM   
CafeenMan



Posts: 3907
Joined: 1/19/2003
From: Spring Hill, FL, USA
Status: offline 		William Robison - I've never built the cub so I'll take your word for it.

I'm building my third miniplane now (sort of) and I have a lot to say about the kit. I have this love/hate relationship with it that I'll discuss in detail on my web site when it's finished. Basically the gist of it is it's way over built in some areas and strangely weak in others.

For example, the upper wing has more plywood, steel and brass holding it on than any rational person would ever use. On the other hand, the lower wing only has on 5/16" square spar that carries over between wing panels. There's no plywood or fiberglass holding the thing together. Those interplane struts just better work. Actually there are two 5/16" carry over spars, but the instructions have you cutting one in half to mount the aileron servo. Strange stuff.

PS. I don't drink coffee, but I add 30% nitro to my Mountain Dew.

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Work is what I do for the love of it. A job is how I pay for it. :)
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Anyone built a Sig Liberty Sport - 3/17/2003 10:58:05 AM   
CafeenMan



Posts: 3907
Joined: 1/19/2003
From: Spring Hill, FL, USA
Status: offline 		PPS. Where the heck is Mary Esther, FL????

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Anyone built a Sig Liberty Sport - 3/17/2003 11:56:26 AM   
William Robison



Posts: 20269
Joined: 11/10/2002
From: Mary Esther, Florida, FL, USA
Status: offline 		(Mountain) Dew Drop:
[QUOTE]Originally posted by CafeenMan
PPS. Where the heck is Mary Esther, FL???? [/QUOTE]
I'm sure you know about Pensacola, and maybe Fort Walton Beach. Mary Esther adjoins FWB, ME's eastern border is FWB's western border. Roughly 40 miles east of P'cola.

Don't know where you are, Bo'?
. I'm willing to tell you where to go!

Haw.

Bill.

PS: My version of mountain dew has sufficient kick from its ethanol, doesn't need any nitro. Haw again. wr.

PPS: (quote) "The buzzards in the sky get so drunk they can't fly, just from smelling that good old mountain dew!" wr.

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Real Airplanes have Two Engines
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Anyone built a Sig Liberty Sport - 3/17/2003 9:24:14 PM   
scale buff


 

Posts: 97
Joined: 12/22/2001
From: Omaha, NE, USA
Status: offline 		In my opinion, it's a great plane to build. It is very easy to do a lot of scale work, making it into a beautiful model. It flies ok, by that I mean it's not a great aerobatic flyer, but I'm sure the full size one wasn't either. I loved building mine. If I can answer any questions, I would be glad to do so. I have a picture but can't include it here, since it exceeds the max file size of this forum.

Frank T.

(in reply to Agman73)
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RE: Liberty sport - 11/30/2003 3:26:34 PM   
ep3j


 

Posts: 5
Joined: 6/7/2003
From: reading, PA, USA
Status: offline 		I just recently bought a Sig Liberty kit off EBAY. I have always wanted one of these wonderful birds os, when they stopped making them I was a little down. Now thanks to the internet I can finally do this. Anyway, to the point. I notice in the photos of the bird, (as I have not received her yet) the wings appear to be open ribbed... I am not a big fan of the dope method and would rather glass the aircraft with some .55 oz paper and waterbased minwax. What do you think?

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