Axe cp flybar paddles do not return parallel to swashplate after cyclic stick is moved left or right
While replacing the center hub i removed the flybar paddle, weight, and mount collar. i managed to balance the flybar... I believe. there is some vibration at 10 to 20 % throttle, (without the main blades installed) but subsides a bit after 20% throttle. The paddles will remain parallel until the cyclic stick is moved left or right at which point when throttle is off, the paddles do not return to parallel. Should the mount collars be tight against the stabilizer control hub to prevent the whole flybar from spinning, or should the flybar spin freely?
I found this on xheli.com. Syma S022 big CH-47 chinook.
Looks like the same heli as Yiboo. Lists all spare parts.
Good Luck. Please post results if you order from this site.
I also have the Yiboo CH-47, have not needed parts yet, just got it for xmas from my wife.
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I am not quite sure how the major axis of your hyperbola is directed and i do not know if the lengths you give are measures of the major and minor axes or the measures of the semi-major and semi-minor axes. So I am giving you the equations and the graphs so that you can decide for yourself what is appropriate for your problem.
Major axis parallel to the X-axis Equation and graph
Center is at x=1 and y=-2, semi-major axis length is a=6, and semi-minor axis length is b=12
Major axis is parallel to the y-axis Equation
Center is at x=1 and y=-2, semi-major axis length is a=12, and semi-minor axis length is b=6.
I trust you can customize the equations to fit your need.
No this wobble is not caused by the tail motor. i have had 3 that have all done the same thing. The fix is simple. The tail would cause it to go back and forth like it is turning back and forth with rudder. When he says bobbing he is talking about a oval shaped motion that the heli does while hovering. looks like its rocking front to back. tail wag is different and has to do with gyro over sensitivity. To fix: Look at the flybar and check for even flybar paddles (if looking down the flybar make sure one is not angled differently than the other) you can twist them a little to manipulate them. #2 the small extensions connecting the flybar to the links may be bent up or down. Again, looking down the flybar make sure they are pretty level with one another (you can slightly bend them back but be gentle. #3 There is a pin connecting the flybar to the head that goes through. What happens is, after a few bang into things this can start to move out just a fraction of a mm. You will notice that the flybar can move back and forth like it should very easily but there is also a little play rocking it the other way that it is not supposed to go. this amount will be very small but plenty to adversely affect the heli. take a pair of needle nose pliers and carefulle push that pin in just a touch until the flybar tightens enough to stop the movement. Be sure its not too tight so it takes away from the easy movement the flybar is supposed to have. I 100% promise its not the tail motor.
vlad that is tail wag. he is not talking about that. To fix: Look at the flybar and check for even flybar paddles (if looking down the flybar make sure one is not angled differently than the other) you can twist them a little to manipulate them. #2 the small extensions connecting the flybar to the links may be bent up or down. Again, looking down the flybar make sure they are pretty level with one another (you can slightly bend them back but be gentle. #3 There is a pin connecting the flybar to the head that goes through. What happens is, after a few bang into things this can start to move out just a fraction of a mm. You will notice that the flybar can move back and forth like it should very easily but there is also a little play rocking it the other way that it is not supposed to go. this amount will be very small but plenty to adversely affect the heli. take a pair of needle nose pliers and carefulle push that pin in just a touch until the flybar tightens enough to stop the movement. Be sure its not too tight so it takes away from the easy movement the flybar is supposed to have. I 100% promise its not the tail motor.
fix: Look at the flybar and check for even flybar paddles (if looking down the flybar make sure one is not angled differently than the other) you can twist them a little to manipulate them. #2 the small extensions connecting the flybar to the links may be bent up or down. Again, looking down the flybar make sure they are pretty level with one another (you can slightly bend them back but be gentle. #3 There is a pin connecting the flybar to the head that goes through. What happens is, after a few bang into things this can start to move out just a fraction of a mm. You will notice that the flybar can move back and forth like it should very easily but there is also a little play rocking it the other way that it is not supposed to go. this amount will be very small but plenty to adversely affect the heli. take a pair of needle nose pliers and carefulle push that pin in just a touch until the flybar tightens enough to stop the movement. Be sure its not too tight so it takes away from the easy movement the flybar is supposed to have. I 100% promise its not the tail motor.
The wobbling is called "tail wag" and is cause by either a bad tail motor or the speed controller built into the circuit board. Try replacing the tail motor. ~VLAD~
Sounds like "Tail Wag" which is caused by either a bad tail motor, or the speed controller built into the circuit board. Try replacing the tail motor. ~VLAD~
sounds like the shaft has been jarred loose causeing the fly bar to exceed its limit. return for refund or exchange, or if you feel brave carefully crazy glue the flybar housing to the shaft so that the bar it self still operates but has no left right play in it... worked for one of the 4 i had....
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