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Old 09-24-2008, 12:31 PM
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CAPT John
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Default RE: F-16 fighting eagle from famous


ORIGINAL: rcmiket

Here's my story. When I finished the jet. I tried to balance it at 78mm per the instructions. It required 3 oz. of lead in the nose to achieve that balance point. First flight I needed so much up to rotate it was ridiculous. In flight I keep adding up trim, all I had and it still was diving. Had to hold up the whole flight. I concluded the jet was nose heavy. I removed 1/2 the weight and flew again. some improvement but not much. I took all the weight out and flew again. Better but still not right. At 78mm the jet is nose heavy. I'm at 90mm right now and it balanced level. I still think it needs to balance back a bit more. As far as I'm concerened the CG point in the instructions are wrong. I realize that everyone has there own preference about how a plane should fly and what CG best fits there style. I prefer mine a hair nose heavy.I want to get it to thr point where there's no up trim in level flight,I'll keep messing with it till I find where that is. As far as the 2 crashes If they flew anything like mine did the first time out it took forever to rotate if you pulled it off green it would stall, snap and crash. Mike
Mike,
I concur with your assessment. I had to add about 2 oz. of nose weight to get the jet to balance at the recommended 78mm. I had to hand launch due to our grass runway not allowing the plane to build enough speed to rotate. The first hand launch was successful, but just barely as it was very hard to get the plane to climb. I too used all the up trim on my radio and the plane was still diving. In retrospect, I believe the jet was nose heavy. The elevator was not touchy and the landing was hard to slow down.

As for my "crash," I chalk that up to a bad hand launch throw. I'm going to remove the nose weight and try again this weekend. I'll report back with the results.

John