Sig Kougar Build
#51
Senior Member
RE: Sig Kougar Build
don't think this design needs dual aileron servos
Bill
Anyone else seen a small amount of wiggle on their Kougar when flying straight and level? The wiggle is small but annoying and doesn't seem to be affected by trim.
#53
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RE: Sig Kougar Build
Anyone else seen a small amount of wiggle on their Kougar when flying straight and level? The wiggle is small but annoying and doesn't seem to be affected by trim.
Rod
#54
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RE: Sig Kougar Build
This is one I used to practice glassing. OS 60 blackhead powered. You could fly it as fast or slow as you wanted. They are great all round flyers.
#58
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RE: Sig Kougar Build
Man, that looks nice K5054. I'd like to do a fiberglass job on mine too but I just don't have the time right now to learn something new. Your scheme is real close to something I would like.
I'm going to go down there for a bit tonight and get some more work done on it.
I'm going to go down there for a bit tonight and get some more work done on it.
#63
Senior Member
RE: Sig Kougar Build
ORIGINAL: rainedave
Bill, sorry to see your misfortune.[]
Where do you fly? I also live in G'boro.
David
Bill, sorry to see your misfortune.[]
Where do you fly? I also live in G'boro.
David
The damage is probably repairable but a lot of CA joints came apart. If the Kougar fuselage were as strong as the wing the airplane would last forever.
Bill
#64
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RE: Sig Kougar Build
Sometimes they look worse than they actually are. Good luck with the repairs.
I've driven by the Brown Summit field (no one was there and the gate was locked). After visiting a few sites in the area including Mocksville, I joined the Burlington club. It's a 40min drive but I like the field.
The Kougar is one I've always wanted to build.
David
I've driven by the Brown Summit field (no one was there and the gate was locked). After visiting a few sites in the area including Mocksville, I joined the Burlington club. It's a 40min drive but I like the field.
The Kougar is one I've always wanted to build.
David
#65
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RE: Sig Kougar Build
ORIGINAL: BillS
May I use your fuselage for a few days?
Bill
May I use your fuselage for a few days?
Bill
How did that crash happen? The spinner and prop aren't broke and the engine looks undamaged so it doesn't appear to have gone nose in...
Just curious. I've had two other Kougars, the first crashed due to an elevator pushrod failure (made per the instructions and appears to have broken under stress) the second was dump thumbs.
#68
Senior Member
RE: Sig Kougar Build
The engine is an OS 46 SF.
I will attempt to piece it back together since my repair skills are OK but building skills are not so good. The wing has no damage and my flying skills will not know the difference.
The damage was entirely my fault.
Score:
Cedar tree = 3
Two other airplanes damaged due to the tree.
Airplanes = 0
Landing was too fast and very long. The airplane was long past me and about to center punch a tall cedar tree about head high. I aileroned left and successfully missed the tree but lost the head high altitude and touched on the left wing tip in a reasonably flat attitude.
The wing had no damage and extremely minor scuff contact. There were no contact marks or dirt on the spinner, prop, or engine, or fuselage. The nylon wing bolts were not broken and I cannot find any marks indicating the front end hit the dirt or grass. Fuselage damage is significant.
Better pictures.
Bill
I will attempt to piece it back together since my repair skills are OK but building skills are not so good. The wing has no damage and my flying skills will not know the difference.
The damage was entirely my fault.
Score:
Cedar tree = 3
Two other airplanes damaged due to the tree.
Airplanes = 0
Landing was too fast and very long. The airplane was long past me and about to center punch a tall cedar tree about head high. I aileroned left and successfully missed the tree but lost the head high altitude and touched on the left wing tip in a reasonably flat attitude.
The wing had no damage and extremely minor scuff contact. There were no contact marks or dirt on the spinner, prop, or engine, or fuselage. The nylon wing bolts were not broken and I cannot find any marks indicating the front end hit the dirt or grass. Fuselage damage is significant.
Better pictures.
Bill
#69
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RE: Sig Kougar Build
hi bill....now I dont feel too bad as my kougar crashed last week due to good ole pilot error.my wing is totally ynscathed and the tail feathers as well.so perhaps over the fall and winter will repair the nose . a fun ship to own.and fast!!!
#70
My Feedback: (1)
RE: Sig Kougar Build
Those box fuselages are so easy to scratch that I'd just make a new one using the old parts as templates, and you can select lighter wood than the original Sig stuff (any hard maple you can find is lighter). Gluing that back together is going to add some weight and you'll have to recover it, anyway.
#71
Senior Member
RE: Sig Kougar Build
ORIGINAL: cloudancer03
hi bill....now I dont feel too bad as my kougar crashed last week due to good ole pilot error.my wing is totally ynscathed and the tail feathers as well.so perhaps over the fall and winter will repair the nose . a fun ship to own.and fast!!!
hi bill....now I dont feel too bad as my kougar crashed last week due to good ole pilot error.my wing is totally ynscathed and the tail feathers as well.so perhaps over the fall and winter will repair the nose . a fun ship to own.and fast!!!
My experience suggests that the wing simply does not break. It the fuselage was as strong as the wing the airplane would be indestructible. Maybe a foam sheeted fuselage.
Bill
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RE: Sig Kougar Build
Some great looking Cougars on here. My original one was my second aircraft (after a Sterling Fledgling). Flew her for over 10 years before a peach tree reached out of nowhere and grabbed her....not much left but little foam pieces....
Current Cougar utilizes a OS .61 and Robart retracts...Wanted to put a pipe on too, but oriented the engine wrong and the pipe won't fit around the wing... [&o]
Versatile airframes these things are... my original one went from tricycle gear to taildragger in it's time. If the computer let's me input a real reply, I'll post some pics of the current one.
Good luck and great flying with your Cougars!!!
Current Cougar utilizes a OS .61 and Robart retracts...Wanted to put a pipe on too, but oriented the engine wrong and the pipe won't fit around the wing... [&o]
Versatile airframes these things are... my original one went from tricycle gear to taildragger in it's time. If the computer let's me input a real reply, I'll post some pics of the current one.
Good luck and great flying with your Cougars!!!
#74
Senior Member
RE: Sig Kougar Build
As you may know I had a Kougar come apart on ground contact that was not all that hard. It sort of exploded. Post 68. I did not build the airplane and the formers an firewall were glued with CA.
The Kougar is repaired now and during the repair several decisions/changes were made. If you are not too far along the thoughts might be helpful.
1. CA on formers is a bad idea.
2. The aileron servo should have been as deep in the wing as possible.
3. A Dubro 10 oz. tank is a better fit than the previous tank.
4. The firewall was doweled with toothpicks from the front since it was not remade.
5. 1/4" balsa square stock was used both front and back on each former to reinforce and help it stick to the fuselage in spite of the CA.
6. I managed to put the servo tray in a little high and had interference in three places when the wing was installed. The servo tray was removed and the servos were installed three abreast. There is considerably more room for the RX and battery now.
7. Steering hook up is with a U bend and clevis at the steering arm which allows connection to the least sensitive hole in the steering arm and adjustment without removing the wing.
I am currently installing gear in another Kougar and the formers were also installed with CA.
Bill
The Kougar is repaired now and during the repair several decisions/changes were made. If you are not too far along the thoughts might be helpful.
1. CA on formers is a bad idea.
2. The aileron servo should have been as deep in the wing as possible.
3. A Dubro 10 oz. tank is a better fit than the previous tank.
4. The firewall was doweled with toothpicks from the front since it was not remade.
5. 1/4" balsa square stock was used both front and back on each former to reinforce and help it stick to the fuselage in spite of the CA.
6. I managed to put the servo tray in a little high and had interference in three places when the wing was installed. The servo tray was removed and the servos were installed three abreast. There is considerably more room for the RX and battery now.
7. Steering hook up is with a U bend and clevis at the steering arm which allows connection to the least sensitive hole in the steering arm and adjustment without removing the wing.
I am currently installing gear in another Kougar and the formers were also installed with CA.
Bill
#75
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RE: Sig Kougar Build
CA on the formers is a fine idea - so long as you don't crash.
Even so - a crash will likely do quite a bit of damage to a Kougar simply because the structure is so stiff and made up of so few parts. Where is the energy in the crash going to go? There is nothing really to crumple so you end up with split sides...
I did however use mostly epoxy and wood glue on this build. A bit of CA here and there but mostly epoxy and wood glue.
I have most of next week off and hope to complete the majority of final tasks before covering then. Tomorrow night I'll go down and start working on the tail I believe (fitting for attachment) and then start working on the radio gear. Really isn't much to do after that.
Even so - a crash will likely do quite a bit of damage to a Kougar simply because the structure is so stiff and made up of so few parts. Where is the energy in the crash going to go? There is nothing really to crumple so you end up with split sides...
I did however use mostly epoxy and wood glue on this build. A bit of CA here and there but mostly epoxy and wood glue.
I have most of next week off and hope to complete the majority of final tasks before covering then. Tomorrow night I'll go down and start working on the tail I believe (fitting for attachment) and then start working on the radio gear. Really isn't much to do after that.