Go Back  RCU Forums > RC Airplanes > Kit Building
Reload this Page >

Sig Kougar Build

Community
Search
Notices
Kit Building If you're building a kit and have questions or want to discuss kit building post it here.

Sig Kougar Build

Thread Tools
 
Search this Thread
 
Old 06-03-2007, 06:36 AM
  #51  
BillS
Senior Member
 
Join Date: Sep 2004
Location: Greensboro, NC
Posts: 3,312
Likes: 0
Received 1 Like on 1 Post
Default RE: Sig Kougar Build

don't think this design needs dual aileron servos
Agreed. The ailerons on the two that I am flying use standard servos and very little travel and they roll very fast. I don't think there is anything to be gained with two 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.
Old 06-03-2007, 07:54 AM
  #52  
Jon.
Senior Member
 
Join Date: Apr 2006
Location: Brockville, ON, CANADA
Posts: 108
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sig Kougar Build

I have two servos and its great! you can have flaps and alirons in one..
Old 06-03-2007, 11:01 AM
  #53  
heli_Rod
Senior Member
 
heli_Rod's Avatar
 
Join Date: Dec 2005
Location: Fairmount, IN
Posts: 621
Likes: 0
Received 0 Likes on 0 Posts
Default 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.
All of mine did that. I assumed it was because the vertical stab and rudder are in a somewhat forward position and short coupled. I never thought of it as a problem, more like just what a Kouger does.

Rod
Old 06-03-2007, 07:57 PM
  #54  
K 5054
Member
 
K 5054's Avatar
 
Join Date: May 2007
Location: Ottawa, ON, CANADA
Posts: 35
Likes: 0
Received 0 Likes on 0 Posts
Default 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.

Old 06-03-2007, 08:02 PM
  #55  
K 5054
Member
 
K 5054's Avatar
 
Join Date: May 2007
Location: Ottawa, ON, CANADA
Posts: 35
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sig Kougar Build

edited please delete
Old 06-03-2007, 08:03 PM
  #56  
K 5054
Member
 
K 5054's Avatar
 
Join Date: May 2007
Location: Ottawa, ON, CANADA
Posts: 35
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sig Kougar Build

edited please delete
Old 06-03-2007, 09:15 PM
  #57  
K 5054
Member
 
K 5054's Avatar
 
Join Date: May 2007
Location: Ottawa, ON, CANADA
Posts: 35
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sig Kougar Build

edited please delete
Old 06-03-2007, 10:29 PM
  #58  
submikester
Thread Starter
My Feedback: (6)
 
Join Date: Aug 2004
Location: El Segundo, CA
Posts: 1,406
Likes: 0
Received 0 Likes on 0 Posts
Default 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.
Old 06-06-2007, 11:47 PM
  #59  
submikester
Thread Starter
My Feedback: (6)
 
Join Date: Aug 2004
Location: El Segundo, CA
Posts: 1,406
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sig Kougar Build

Coming around to the home stretch folks...


Attached Thumbnails Click image for larger version

Name:	Us55322.jpg
Views:	378
Size:	64.6 KB
ID:	699100   Click image for larger version

Name:	Ez82020.jpg
Views:	388
Size:	60.2 KB
ID:	699101  
Old 06-07-2007, 06:22 AM
  #60  
heli_Rod
Senior Member
 
heli_Rod's Avatar
 
Join Date: Dec 2005
Location: Fairmount, IN
Posts: 621
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sig Kougar Build

Almost cover time ! Looking good. Makes me want another Kouger...LOL.

Rod
Old 06-07-2007, 09:38 AM
  #61  
BillS
Senior Member
 
Join Date: Sep 2004
Location: Greensboro, NC
Posts: 3,312
Likes: 0
Received 1 Like on 1 Post
Default RE: Sig Kougar Build

May I use your fuselage for a few days?

Bill
Attached Thumbnails Click image for larger version

Name:	Tr51405.jpg
Views:	432
Size:	75.6 KB
ID:	699266  
Old 06-07-2007, 09:56 AM
  #62  
rainedave
My Feedback: (1)
 
rainedave's Avatar
 
Join Date: Jul 2005
Location: Richmond, VA
Posts: 6,344
Likes: 0
Received 1 Like on 1 Post
Default RE: Sig Kougar Build

Bill, sorry to see your misfortune.[]

Where do you fly? I also live in G'boro.

David
Old 06-07-2007, 11:06 AM
  #63  
BillS
Senior Member
 
Join Date: Sep 2004
Location: Greensboro, NC
Posts: 3,312
Likes: 0
Received 1 Like on 1 Post
Default RE: Sig Kougar Build


ORIGINAL: rainedave

Bill, sorry to see your misfortune.[]

Where do you fly? I also live in G'boro.

David
Since 1989 the Kernersville Club has been flying at a field on Haw River road. We lost our field to development last year. So far a new field has not been located. I have been flying at my home on Pleasant Ridge Road most of this year but previously on Haw River Road. Occasionally I visit the High Point field but it is a long drive. There is a new field at Brown Summit on City/County property but I have not flown.

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
Old 06-07-2007, 04:32 PM
  #64  
rainedave
My Feedback: (1)
 
rainedave's Avatar
 
Join Date: Jul 2005
Location: Richmond, VA
Posts: 6,344
Likes: 0
Received 1 Like on 1 Post
Default 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
Old 06-07-2007, 08:17 PM
  #65  
submikester
Thread Starter
My Feedback: (6)
 
Join Date: Aug 2004
Location: El Segundo, CA
Posts: 1,406
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sig Kougar Build

ORIGINAL: BillS

May I use your fuselage for a few days?

Bill
Sorry for your loss; any chance you would part with that dubro brake setup?

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.

Old 06-07-2007, 08:25 PM
  #66  
meaden
Senior Member
 
meaden's Avatar
 
Join Date: Jan 2006
Location: Decatur, GA
Posts: 626
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sig Kougar Build

BillS,

What engines on that sick cat? Looks like an OS. I have .46 SF on mine.

Old 06-08-2007, 01:07 AM
  #67  
submikester
Thread Starter
My Feedback: (6)
 
Join Date: Aug 2004
Location: El Segundo, CA
Posts: 1,406
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sig Kougar Build

Here is a picture from my original in 1991.

Attached Thumbnails Click image for larger version

Name:	By76443.jpg
Views:	365
Size:	61.3 KB
ID:	699742  
Old 06-08-2007, 12:23 PM
  #68  
BillS
Senior Member
 
Join Date: Sep 2004
Location: Greensboro, NC
Posts: 3,312
Likes: 0
Received 1 Like on 1 Post
Default 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
Attached Thumbnails Click image for larger version

Name:	Hf98871.jpg
Views:	275
Size:	74.6 KB
ID:	699956   Click image for larger version

Name:	Av68103.jpg
Views:	287
Size:	69.5 KB
ID:	699957  
Old 06-11-2007, 07:45 AM
  #69  
cloudancer03
My Feedback: (22)
 
Join Date: Jan 2003
Location: palm harbor, FL
Posts: 2,232
Likes: 0
Received 0 Likes on 0 Posts
Default 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!!!
Old 06-11-2007, 12:16 PM
  #70  
rainedave
My Feedback: (1)
 
rainedave's Avatar
 
Join Date: Jul 2005
Location: Richmond, VA
Posts: 6,344
Likes: 0
Received 1 Like on 1 Post
Default 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.
Old 06-11-2007, 01:06 PM
  #71  
BillS
Senior Member
 
Join Date: Sep 2004
Location: Greensboro, NC
Posts: 3,312
Likes: 0
Received 1 Like on 1 Post
Default 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!!!
Sorry about your breakage.

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
Old 06-12-2007, 10:35 AM
  #72  
rschaffer
Member
 
Join Date: Oct 2005
Location: Moyock, NC
Posts: 75
Likes: 0
Received 0 Likes on 0 Posts
Default 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!!!
Old 06-27-2007, 12:21 AM
  #73  
submikester
Thread Starter
My Feedback: (6)
 
Join Date: Aug 2004
Location: El Segundo, CA
Posts: 1,406
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Sig Kougar Build

Had a bit of vacation to attend to but I'm back now and hopefully will get started on some work tomorrow or Thursday night.
Old 06-27-2007, 11:20 AM
  #74  
BillS
Senior Member
 
Join Date: Sep 2004
Location: Greensboro, NC
Posts: 3,312
Likes: 0
Received 1 Like on 1 Post
Default 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
Old 06-27-2007, 11:44 PM
  #75  
submikester
Thread Starter
My Feedback: (6)
 
Join Date: Aug 2004
Location: El Segundo, CA
Posts: 1,406
Likes: 0
Received 0 Likes on 0 Posts
Default 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.


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.