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Old 11-20-2007, 09:47 PM   #3
brycesteenburg
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Join Date: Jan 2007
Location: mattoon illinois usa
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Default Re: Giant Scale Planes Sukhoi-31

I already have it to the point of installing servos, switches, batts, etc... But I can tell everyone the instructions are poor but you can put it together by looking at the pics closely. I was very surprised that the wing incidence was pretty close to 0. (1\4 degree positive). The tailfeathers were way off 0 and had to trim fuse tube holes to get them to fit at 0. Was a little trying to get them to stay while drying. The canopy is very flimsy but light. I removed the bottom fuse covering to expose the insides for a better look at the very sparse formers inside the gel coated fiberglass fuse. Found sparse glue joints and so-so fits but reglued them. The firewall, landing gear mount, and surrounding areas were the same. Just added some tri corner balsa with 30 min. epoxy to all joints. Has fiberglass wing and tail tubes with doublers. Feel confident that critical areas now appear strong. The control surfaces have radiused hinge pockets. I really wanted to do this type of hinge but got frustrated in attempting to make it right and look good. Sooo, cut the wing trailing edge "c" flush to the wing and left the 1\2 ball control surface side alone and did the conventional Robart hinges. Came out pretty good with alot of throw. (approx. 55deg). The looks and scheme is nice, but the rudder is a different shade of white. Servo mounting in the horizontal stabs are strong and the same on each half. The wing is set up for 2 servos per half and they look strong too. The landing gear is 2 piece and a thick carbon fiber look alike but is fiberglass. Has a top hatch in front of the canopy that gives ample room to work on wing tube and install batts, rx., fuel tank, etc... The fuel tank area can hold a 32oz tank but it is just in front of the wing tube. I have installed a 3w 80 twin up front and it just fits inside the cowl. This is about as far as I got and so far I'd have to say it's not too bad. I weighed it put together with servos (5955's), one 5735 for rudder in the rear bottom hatch, batts, switches, wheels and everthing else set in it's relative places and it came out close to 25.5lbs. All in all it seems decent, just nothing in the contemporary high dollar cool factor. It does look good though. Probably won't fly it right away, but ya never know!
Thanks, Bryce
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