I just bought a SIG Fourstar 60 with a rib taken out of each wing for better performance. I would like to hear from people who have flown this model and let me know what it's strengths/weaknesses are concerning aerobatics.

In stock form it will do all of the normal aerobatics as well as most of the advanced stuff. It lands nice and slow, and with the right amount of power can climb vertically to the moon. With the wings shortened it will roll faster but it will not lose any of it's really great traits

I just found out in another thread that if you make tons of changes to the rudder, elevators and ailerons and overpower it then it will 3D decently.

Personally I like mine in stock form. It's relaxing for me to fly. Here is a video of mine being flown by a 15 yr old kid in a wheelchair.

http://www.hiddenhangarrc.com/video/...xpert_test.wmv

Here is a link to the maneuvers he was doing plus a few he "made up" along the way

http://www.krcs748.com/images/expert_maneuvers.jpg

The configuration is:

Bone stock 4*60
OS91 Four Stroke
APC 15X6
JR537 standard servos all around
JR700 7 channel receiver
Expert 2700 4.8 volt battery

Bill,
Thanks for the reply. I'm excited about getting this thing in the air. A couple of questions.
1. I am going to put a Super Tigre G90 up front. This should be more than enough power?
2. I was considering putting Futaba S3010s in it but they are more expensive than the S3004 low torque servos. Your opinion.
3. How do figure out how to get the CG right on a airplane?
Thanks

1) That engine will be just fine, a tad overpowered but not bad at all. You'll probably be doing most of your flying at 1/2 throttle so your flight times will be 10 - 15 minutes, roughly. I get 20 minutes of hard flying on my OS but mine is well broken in and I fly around at 1/2 throttle allot

2) Either servo will work well. Standard 3004 servos would be enough for normal aerobatics. In the video these are standard 47 ounce servos

3) With the OS91Four Stroke I had to shove the battery up above the fuel tank abd place the receiver between the tank and the servo tray. My bet is you will be able to put the battery and receiver between the servo tray and tank and come out just about perfect. With the size prop you will need to be using, it will need some right rudder on the takeoff roll but you'll be just fine

One other thing. I would replace the control rods for both the rudder and elevator with metal ones. If they are the stock ones they are nylon and although they work well, they do change with temp changes which will change your trims. Other than that there really is not much else to do unless you really want to bash it to get more control surface. I'd hold off on that until you get some flights on it.

My favorite past time with this plane is to shoot tons of touch and goes. I'll grab a chair and just fly around. The thing is just so relaxing to me. I have so many flights on mine I could plant it tomorrow and would not be upset because it does not owe me a thing. I would then turn around and buy another. This is only one of two glow planes I own. I've moved mainly to 1/4 to 1/3rd scale planes. My 4* is also used to help new pilots get used to low wing planes. I've even used it to teach new pilots from the start. They are that easy to fly.

Yea, I know easy is a relative term but once you get it up for the first time you'll understand. You have one of the best planes out there for use as a second plane or low wing trainer and with a little work it gets even better and never loses it's appeal. If you watched the video, you will see just how well behaved the plane is. The kid in the video had only flown it 6 times prior to that flight and was greasing the landings from the beginning. All he ever flew before that was high wing trainers

I kinda bashed several of them. I have never removed any span though. Mostly cleaning up the nose, rimoving the cheeks, and blending the fuse from the firewall to the spinner, making it a smooth transition. Also I normally add elliptical wingtips, and use different aileron stock for more control area. Last, I enlarged the rudder and elevators and made them more like an extra. Lotsa throw, and very strong servos (on 6 volts) Does well with the ST-G90, but I have used OS 91 Surpass and it's probably the best combo. These mods really wake up the model, but I think the single best mod is the nose.
These are my honest observations from bashing the 4 Star series over the past several years. Works well with the Bingo/Big Bingo series as well. By far the best of these is the 4 Star 120 with the above mods powered with a Moki 1.8 Get back and watchis!!!!