goly wrote:1) you mean the bolt where the push rod is fitted in? (the one who connect the arm with rod holder)
2) where have you got push rods, for the ailerons? (the ones on HK isn't like the AXN rods)
3) can you explain the relation between the throw and the horns, and how it affect the plane?
4) is there some mode to make the axn more portable? (like bixler2 with the magnet)
5) my elevator surface isn't responsive, what should i do (move few degrees, less the 5)
*i am using stock servo
*i have checked the push rod , its not glue near the surfaces
Ok,
1) heres how control rods should be setup; one side is connected to the servos arm with that tiny bolt system, the other is connected to the little horn (plastic triangle shaped thingy) on the control surface. On the servo arm the bolt will have a small hole that the rod gets pushed through, this should be tightened, use an allen wrench to tighten the grub screw. The bolt that secures it to the servo arm should be lose enough that the servo arm can do its full rotation without having any stress, people commonly use a thread lock to ensure the bolt doesn't undo during flight (I didn't and haven't had any problems so far).
2) the push rods I used were
Push Rod and Sleeve Set (5pcs/bag) PRODUCT ID: OR015-00601 I found shaping them quite difficult, I used a vice grip to hold one side of the control rod in and then used some pliers to bend the other. You should aim for the same 'Z' shape the current control rods have, but it doesn't necessarily have to match 100% just enough to hold them in-place well.
3) The horns on each control surface contain 3 different holes, placing the control rod in a hole closer to the control surface will increase the throw as the servo arm has to extend less to gain the same throw as it would if the control rod was in a further position. Broadly speaking the more throw your plane has the more responsive the plane will be, although this can make the plane harder to control (especially in rough conditions) So more throw is typically used by flyers who are planning to do stunt flying and less throw is used by beginner flyers or maybe someone flying in heavy wind. If you fly with a programmable radio then almost all of the flight characteristics can be programmed to make the plane easier to fly or more aggressive for stunt flying.
4) If you have already glued the wings together there is not much you can do to make the plane more portable, but if you haven't or maybe you've got a second plane you could
try this. Basically I saw an axn were the wings had strong Velcro on the inside holding them together preventing them from falling out during flight. But during transportation they could be removed. Only problem being is the structure strength of the wings would be reduced noticeably.
5) The servo that went bad on my model was for the rudder, but I replaced both. I would check the to see if the servo is capable of fully extending. Then unassemble the control rod from the servo arm allowing you to freely move the control surface. Now flex the elevator several times until it becomes loose (if it breaks just use fiber tape as a hinge) The control surface should be moving a least a couple degrees in both direction. If everything I said still doesn't work try moving the control rod to a closer hole, although I don't know how this can be done once the horn has been stuck onto the control surface, as there's no way of removing it.