eflyer1234
Jun 14, 2002, 09:01 AM
I was talking to a gentleman who watched one of you guys flying your Park Hawk at a meet. He did not mention which meet or which one of you was flying. His comment though was that there was a complaint that the Park Hawk climbed too aggressively. In hope that you are one of the followers of the group, I am posting the fix for that here, along with the fix for birds with a built in turn.
Climbing - The rate of climb is actually controlled by the diahedral angle of the wing. The lower the angle, the more power that goes into the climb of the bird. To adjust this angle, unscrew the rocker arm from the front hinges. You may then turn the ball links to either extend (more diahedral) or contract (less) this linkage. Please do this in small steps, 2-3 turns makes a big difference. This should help you fine tune your climb.
Turning - This has been covered a bit in the past, but more experience leads to more cures. If your bird has a tendency to always turn to one side in flight, there are three basic cures.
1. you can flip the wingsail over. There is no right or wrong way to put the sail on. Sometimes things just ad up to cause a curve. In all cases I am aware of, flipping the wing has solved the curve on a solid bird.
2. check if you are solid. After time (and some abuse?:rolleyes: ) the trim tape may start to lift a little on the wingsail. Make sure that it is fully secured by pressing it back down along the seams. This can cause roll.
3. spillage - At the tips of the wing, the sail is secured to provide just the right amount of air spillage for flight. If one side produces more, the bird is going to turn in towards that side. You can go to the leading edge og the opposite side and cut a little (no more than 1/4" at a time) slit just behind the trim tape to counter the turn. Save this for a last method.
Climbing - The rate of climb is actually controlled by the diahedral angle of the wing. The lower the angle, the more power that goes into the climb of the bird. To adjust this angle, unscrew the rocker arm from the front hinges. You may then turn the ball links to either extend (more diahedral) or contract (less) this linkage. Please do this in small steps, 2-3 turns makes a big difference. This should help you fine tune your climb.
Turning - This has been covered a bit in the past, but more experience leads to more cures. If your bird has a tendency to always turn to one side in flight, there are three basic cures.
1. you can flip the wingsail over. There is no right or wrong way to put the sail on. Sometimes things just ad up to cause a curve. In all cases I am aware of, flipping the wing has solved the curve on a solid bird.
2. check if you are solid. After time (and some abuse?:rolleyes: ) the trim tape may start to lift a little on the wingsail. Make sure that it is fully secured by pressing it back down along the seams. This can cause roll.
3. spillage - At the tips of the wing, the sail is secured to provide just the right amount of air spillage for flight. If one side produces more, the bird is going to turn in towards that side. You can go to the leading edge og the opposite side and cut a little (no more than 1/4" at a time) slit just behind the trim tape to counter the turn. Save this for a last method.