ORIGINAL: jigeye
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