tomskk
Posts: 20
Joined: 9/22/2004 From: , SLOVENIA Status: offline
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Hey Cam..., what happened with your plane, why you crashed? Today was my maiden flight. Unfortunatly i don't have any pictures. Here are my experiences. I didn't quite read this post (didn't remember what cam... said in the posts above), and I followed the building instructions. I've put a 61 Magnum engine on it and tried to reach the CG at 90mm (90-96mm said the manufacturer). The engine was not heavy enough to reach that CG. So I put the 75 Magnum on it, and even this engine was not heavy enough to reach the CG at 90mm. So I put arround 180 gramms of lead(Pb) from car alloy wheels (used for centering the wheels) on the engine mount horizontaly. This made me reach the CG at 90mm. I put the elevator at 60% and went flying. The plane was still tail heavy and extremly responsive on the elevator stick. My landing ended at too low landing aproach speed (I even turned off the engine.... stupid me....) and the plane stalled and fall down on the ground from arround 1-2 meter of height. The aluminium tube which goes through the wings bended a little, and the fuselage got some damage where the wheels are attached to it. Otherwise everything else was not damaged. Then I turned the lead(Pb) weight verticaly at the tip of the engine mount, producing more weight at front, and the CG came at 85mm. I put the elevator to 45% and went flying again. The planes flew beautyfully. But at the landing you must come with quite some speed. My total weight of the plane with 180 gramms of lead came to arround 3.5 kg. I am thinking on buying a new Super Tigre G90 engine, which is a bit heavier (100 grams) than the one i use now and put an onboard glow driver in the plane, just to lose the lead(Pb) on the engine mount, and get extremly more power. I will repair the plane in a week and report further. I hope these helps somebody else too, but do not make the same mistake as I did and read all of this topic. The CG of this plane is not like it says in the building manual.
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