Sig Kougar Build
12-13-2009, 12:57 AM
#426
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RE: Sig Kougar Build
Greetings,
I am new to this forum and very interested in the info everyone has posted over the years concerning the Sig Kougar Mark II. I purchased my Kougar kit in 1983 and lost interest in flying after failing in learning how to fly my Trainer 40. Well, now with the great changes that has occured with the brushless electric motor and the EPP foam wing I now have the time, money and experience to build the Kougar. If you could be so kind as to answer a few questions:
1- Do you think that the materials in my kit are still usable or has the 26 years of sitting on the shelf taken their toll?
2- Assuming that the materials are OK, what is the best adheisive to use in attaching the balsa skin to the foam core? Will the present 3M 77 spray work or how about the new white Gorilla glue? Is there any difference in the foam used by Sig today compared to that used in 1983?
3- At the time I purchased the Kougar kit years ago I also bought an OS Max .40 engine, fuel tank, and so forth that have never been used. I would like to completely convert this plane to electric. With the new great prices available through HC on electric motors, ESCs, and batteries, what would you recommend?
Thanks, Jeff...
I am new to this forum and very interested in the info everyone has posted over the years concerning the Sig Kougar Mark II. I purchased my Kougar kit in 1983 and lost interest in flying after failing in learning how to fly my Trainer 40. Well, now with the great changes that has occured with the brushless electric motor and the EPP foam wing I now have the time, money and experience to build the Kougar. If you could be so kind as to answer a few questions:
1- Do you think that the materials in my kit are still usable or has the 26 years of sitting on the shelf taken their toll?
2- Assuming that the materials are OK, what is the best adheisive to use in attaching the balsa skin to the foam core? Will the present 3M 77 spray work or how about the new white Gorilla glue? Is there any difference in the foam used by Sig today compared to that used in 1983?
3- At the time I purchased the Kougar kit years ago I also bought an OS Max .40 engine, fuel tank, and so forth that have never been used. I would like to completely convert this plane to electric. With the new great prices available through HC on electric motors, ESCs, and batteries, what would you recommend?
Thanks, Jeff...
01-27-2010, 11:32 AM
#428
RE: Sig Kougar Build
ORIGINAL: DukeStarhopper
Do you think that the materials in my kit are still usable?
YES
Assuming that the materials are OK, what is the best adheisive to use in attaching the balsa skin to the foam core?
Your choice. Contact cement (foam safe of course), Gorilla glue, epoxy... do some research and see which method makes the most sense to you.
Will the present 3M 77 spray work or how about the new white Gorilla glue?
See above.
Is there any difference in the foam used by Sig today compared to that used in 1983?
No.
Do you think that the materials in my kit are still usable?
YES
Assuming that the materials are OK, what is the best adheisive to use in attaching the balsa skin to the foam core?
Your choice. Contact cement (foam safe of course), Gorilla glue, epoxy... do some research and see which method makes the most sense to you.
Will the present 3M 77 spray work or how about the new white Gorilla glue?
See above.
Is there any difference in the foam used by Sig today compared to that used in 1983?
No.
01-27-2010, 12:09 PM
#429
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RE: Sig Kougar Build
ORIGINAL: DukeStarhopper
Greetings,
I am new to this forum and very interested in the info everyone has posted over the years concerning the Sig Kougar Mark II. I purchased my Kougar kit in 1983 and lost interest in flying after failing in learning how to fly my Trainer 40. Well, now with the great changes that has occured with the brushless electric motor and the EPP foam wing I now have the time, money and experience to build the Kougar. If you could be so kind as to answer a few questions:
1- Do you think that the materials in my kit are still usable or has the 26 years of sitting on the shelf taken their toll?
2- Assuming that the materials are OK, what is the best adheisive to use in attaching the balsa skin to the foam core? Will the present 3M 77 spray work or how about the new white Gorilla glue? Is there any difference in the foam used by Sig today compared to that used in 1983?
3- At the time I purchased the Kougar kit years ago I also bought an OS Max .40 engine, fuel tank, and so forth that have never been used. I would like to completely convert this plane to electric. With the new great prices available through HC on electric motors, ESCs, and batteries, what would you recommend?
Thanks, Jeff...
Greetings,
I am new to this forum and very interested in the info everyone has posted over the years concerning the Sig Kougar Mark II. I purchased my Kougar kit in 1983 and lost interest in flying after failing in learning how to fly my Trainer 40. Well, now with the great changes that has occured with the brushless electric motor and the EPP foam wing I now have the time, money and experience to build the Kougar. If you could be so kind as to answer a few questions:
1- Do you think that the materials in my kit are still usable or has the 26 years of sitting on the shelf taken their toll?
2- Assuming that the materials are OK, what is the best adheisive to use in attaching the balsa skin to the foam core? Will the present 3M 77 spray work or how about the new white Gorilla glue? Is there any difference in the foam used by Sig today compared to that used in 1983?
3- At the time I purchased the Kougar kit years ago I also bought an OS Max .40 engine, fuel tank, and so forth that have never been used. I would like to completely convert this plane to electric. With the new great prices available through HC on electric motors, ESCs, and batteries, what would you recommend?
Thanks, Jeff...
02-25-2010, 08:51 PM
#434
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RE: Sig Kougar Build
I last posted about a week before Christmas and as I noted back then I have once again renewed an effort of building a Sig Kougar that I started some 26 years ago.
I started with the wings by using 30 minute epoxy to attach the balsa sheeting to the foam cores. Next I attached the wing tips, and the leading and trailing edges with white Gorilla glue. Then both wings were glued together with white Gorilla. Gorilla glue is a great adhesive for foam!
Here are some pic taken back before Christmas of the Kougar wing core being sheeted:
I started with the wings by using 30 minute epoxy to attach the balsa sheeting to the foam cores. Next I attached the wing tips, and the leading and trailing edges with white Gorilla glue. Then both wings were glued together with white Gorilla. Gorilla glue is a great adhesive for foam!
Here are some pic taken back before Christmas of the Kougar wing core being sheeted:
02-25-2010, 09:06 PM
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RE: Sig Kougar Build
Back 26 years ago I started the build by assembling the fuselage and as I again renewed the build I found the tail section to be off center to the right. Here in these photo you see a template and a wood jig that I used to bring everything back straight as I epoxied the balsa sheeting on the bottom.
02-25-2010, 10:45 PM
#436
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RE: Sig Kougar Build
And here are the latest pics taken today of the wing and the fuselage:
I am going to be converting my Kougar to electric and have already received some great ideas from racingjeff1. He recommends the following HC components:
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=2099
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=7340
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=9177
Thanks Jeff!
I am going to be converting my Kougar to electric and have already received some great ideas from racingjeff1. He recommends the following HC components:
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=2099
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=7340
http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idproduct=9177
Thanks Jeff!
02-26-2010, 07:38 AM
#437
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RE: Sig Kougar Build
hey no problem, that combo in that plane is a real eye opener to glow guys. Oops one thing I forgot to tell you, if you go with the 12 pitch prop, it produces so much torque you need to do a nice steady takeoff roll building up airspeed because if you try and just gun it the aircraft will want to hard roll opposite to the prop torque and also limits the effectiveness of the elevator and it has a good chance of crashing. I guess it just wants to be a helicopter at that point.
02-26-2010, 02:50 PM
#438
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RE: Sig Kougar Build
Nice to see my thread living on...
I was just flying my own kougar last weekend in fact.
Probably take it out again this weekend.
I was just flying my own kougar last weekend in fact.
Probably take it out again this weekend.
02-26-2010, 02:58 PM
#439
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RE: Sig Kougar Build
Looks like Tower Hobbies is no longer carrying the Kougar. Becoming a more and more irrelevant place to shop, unless all you want is an ARF made by some Chinese women on the production line.
I love seeing all the different Kougars here.
I love seeing all the different Kougars here.
02-26-2010, 04:00 PM
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RE: Sig Kougar Build
It seems like Tower's almost not carrying anything but what they distribute. I was looking for a 4*60 or 120 arf and they didn't have anything by Sig.
Weak.
Weak.
02-26-2010, 04:14 PM
#441
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RE: Sig Kougar Build
I don't even buy wood from them anymore. I have a $20 off $50 order coupon and can't even get to $50.00 with stuff I actually need for 3 projects I have going on, that is unless I want to overpay for something.
03-13-2010, 11:03 PM
#442
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RE: Sig Kougar Build
Guys
Just picked up a used Kougar at a swap meet. Powered by a OS 40P Max H I hope it's enough motor.
Anyways, can I ask what the C of G and suggested control throws are?
Thanks!
Tommy D
Just picked up a used Kougar at a swap meet. Powered by a OS 40P Max H I hope it's enough motor.
Anyways, can I ask what the C of G and suggested control throws are?
Thanks!
Tommy D
03-14-2010, 10:18 AM
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RE: Sig Kougar Build
Tommy: here's the "book" balance/throw stuff: balance 1/2" back from LE, to 3/4" if it won't spin well. Further back than 1" not recommended for non-experts - definitely includes me!
Recommended throws for initial flight: Ailerons 3/8" up and down from neutral ( neutral defined as in line with the wing chord and not the two plywood inserts - would anyone really think that?). Full rudder 1 1/4" to 1 1/2".
Hope this helps.
This for the Kougar Mk II
Recommended throws for initial flight: Ailerons 3/8" up and down from neutral ( neutral defined as in line with the wing chord and not the two plywood inserts - would anyone really think that?). Full rudder 1 1/4" to 1 1/2".
Hope this helps.
This for the Kougar Mk II
03-14-2010, 09:57 PM
#444
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RE: Sig Kougar Build
ORIGINAL: SLOtyro
Tommy: here's the ''book'' balance/throw stuff: balance 1/2'' back from LE, to 3/4'' if it won't spin well. Further back than 1'' not recommended for non-experts -
Hope this helps.
This for the Kougar Mk II
Tommy: here's the ''book'' balance/throw stuff: balance 1/2'' back from LE, to 3/4'' if it won't spin well. Further back than 1'' not recommended for non-experts -
Hope this helps.
This for the Kougar Mk II
Could you please recheck that for me.
Anyways have a look at this oddity. I noticed the motor seemed very flexible on it's mount. I needed to change the fuel line so off came the prop and cowl. Holy toledo can I bend this mount! When you examine it, it looks like it was cut, with a purpose? Any ideas?
Thanks!
Tommy D
03-14-2010, 10:28 PM
#445
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RE: Sig Kougar Build
The measurement is from the LE at the tip - sorry about that.
Don't recognise that mount. The orignal sig mount was a 3" 2-piece aluminum thing - now is changed to glass filled nylon, I imagine because lots of people broke taps off in the aluminum...
The present one is pretty rigid and would stand having an engine far out on the mount to get it far enough away from the firewall for the cowl
Don't recognise that mount. The orignal sig mount was a 3" 2-piece aluminum thing - now is changed to glass filled nylon, I imagine because lots of people broke taps off in the aluminum...
The present one is pretty rigid and would stand having an engine far out on the mount to get it far enough away from the firewall for the cowl
03-15-2010, 06:35 PM
#447
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RE: Sig Kougar Build
A buddy whom has a couple of Kougars is going to give me a new mount. Nice buddy eh?
I weighed the Max-H 40 and was surprised to find it only weighs 9.1 ounces! With a muffler it's 11.5 ounces. I do wonder if I say replace it with a newer OS 46 AX motor how much tail weight I might end up with to get this to balance. Oh well Ill test run the old 40 first to see what it can tach the prop at.
Thanks for the advice guys!
Tommy D
I weighed the Max-H 40 and was surprised to find it only weighs 9.1 ounces! With a muffler it's 11.5 ounces. I do wonder if I say replace it with a newer OS 46 AX motor how much tail weight I might end up with to get this to balance. Oh well Ill test run the old 40 first to see what it can tach the prop at.
Thanks for the advice guys!
Tommy D
03-15-2010, 06:46 PM
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RE: Sig Kougar Build
EDIt i am full of stupid questions tonight, so my final maybe stupid question is, does one oz of glow fuel equal 1 oz of weight? i.e 16 oz of glow fuel =1 lb?
03-17-2010, 12:15 PM
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RE: Sig Kougar Build
That should be a good running engine, and a lot lighter than the 46AX. It does need a glow-plug with an idle-bar though. The mount looks like an abused Dave Brown mount. I'd definitely replace it.
Run it and have fun.
Larsen
Run it and have fun.
Larsen
03-17-2010, 08:18 PM
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RE: Sig Kougar Build
Agreed.
I don't have the numbers in front of me, but when I pulled the motor off the Kougar I think it weighed in the 9oz range! If all goes well we will try and fire it up tomorrow and see what kind of RPMs it does.
Another local flyer has the OS 46AX in his and it goes pretty darn good.
I'm hoping for some "cheap speed/fun" as its awfully expensive trying to do this via electric. For example I maidened a 60 size Electric Model today. Even on 6S and 1700W the model was hardly a screamer. Tops out at or about 100 MPH. Perhaps it's just too darn quiet and that seems to make it look slower! LoL
Tommy D
I don't have the numbers in front of me, but when I pulled the motor off the Kougar I think it weighed in the 9oz range! If all goes well we will try and fire it up tomorrow and see what kind of RPMs it does.
Another local flyer has the OS 46AX in his and it goes pretty darn good.
I'm hoping for some "cheap speed/fun" as its awfully expensive trying to do this via electric. For example I maidened a 60 size Electric Model today. Even on 6S and 1700W the model was hardly a screamer. Tops out at or about 100 MPH. Perhaps it's just too darn quiet and that seems to make it look slower! LoL
Tommy D