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ED MOORMAN'S TEACH YOURSELF MANEUVER CARD |
LOMCEVAK |
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You might say the lomcevak, or end-over-end tumble, is the ultimate hot dog maneuver. There are a couple of ways to do the lomcavak. One is from a climbing snap, which works on most planes. The other is to go to lomcevak controls without the snap. This can be done from any attitude, even upright or inverted level flight. To do a lomcevak, a plane must stall well in the inverted or downward position. You will need a lot of down elevator travel. |
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Let's look at the one that begins with a snap first. -From level flight at top speed (I sometimes dive to get a little extra speed), pull the plane up to about a 30 degree climb and roll right into an 80-90 degree bank. -Do a left upright snap roll. -After about a snap and a quarter, hold the rudder, throttle, and aileron, but pop in full down. Look at drawing 2. It takes some practice to catch it right, but the plane should tumble end over end a couple of times. |
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LOMCEVAK STICK POSITIONS |
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1. LEFT UPRIGHT SNAP |
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2. Hold everything else, but go to DOWN ELEVATOR |
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To recover, you just release the controls. |
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If your plane just pitches down, but will not tumble, you probably need more down elevator. You also might try moving the CG back a little bit. If your plane has very round, blunt leading edges, try a piece of 1/4 triangle stock taped to the last foot or so of the leading edge as a stall strip. This will give you, in effect, a sharp leading edge, which stalls quicker. |
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Look at the 2nd drawings again and note the stick positions. Some planes will take this control and flop from level flight or from an upright or inverted climb. |
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STEWART ROLL |
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This is a new one that I've named for my step son, Chad Stewart, whom I saw doing it first. He was trying to do a lomcevak and got the sticks mixed up and the bipe he was flying did a funny corkscrew type roll. He found that he could repeat it and showed me the control positions. I tried it with my planes and have added it to my hotdog maneuvers. It is started from a slight climb. You pop in full up, full right aileron, and full left rudder. The plane does an upward flip with the tail kicking out. Reverse the aileron and rudder for an opposite one. |
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If you will consider the controls on the Stewart Roll for a minute, you'll see that it is realy a positive lomcevak. Snap rolls have the aileron and rudder in the same direction, while the lomcevak has them cross controlled. Remember that when inverted, the rudder is reversed so that both left aileron and rudder in a lomcevak is cross controlling. The Stewart Roll, with up elevator and crossed aileron and rudder is the same as the negative G lomcevak. Since we start it from a slight climb, it looks funny with its upward flip, compared the the forward tumble of the lomcevak. Start a lomcevak from an inverted climb and see how it looks. |
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by Ed Moorman |
85 12th Street Shalimar, FL 32579 |
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