Champstarr

I would suggest the following steps be taken to solve your problem(s).


1. Disconnect all the elevator and rudder pushrods at the servo end, screw the elevator servo down, make sure that you don't have any trim or throw limits set in the transmitter.


2. Turn your system on and check that the two servo horns are set at 90 degrees to the for/aft axis of the servo as shown on page 6 of the assembly instructions. There should be no buzzing at this point.


3. Move the elevator and rudder sticks full travel up/down and left/right. You should see about 60 degrees of travel at the servo on each side of center and no buzzing. This is about twice the travel that you will need to get the recommended high rate throws called for, but that will be adjusted later on.


At this point you will have proven that the servos are OK.


4. Turn off the radio and measure the control surface travel as shown on pages 23 and 24 of the assembly manual by operating the pushrods by hand one at a time. If you can't easily get the travels specified, find out what is binding and fix it.


At this point you have the control surfaces proven.


5. Now, for the rudder only, reconnect the pushrod as suggested in the instructions. Turn on the radio equipment and move the stick to it's limits. The manual is showing the starting position as being the outer hole. If you get the buzzing at the end of travel, you have more servo rotation than the mechanical travel of the rudder will allow. You could probably adjust the travel limits in the transmitter but I would save that for fine tuning later. Move the pushrod in one hole on the servo and try it again. Moving the pushrod toward center reduces the linear travel of the pushrod as the servo rotates. Just keep going until the servo is quiet over its entire travel
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At this point you should have a rudder that is operating properly.


6. Go back to page 10 of the manual. Starting with step 12 and continuing through step 15 read the instructions out loud and study the illustrations. Reading the instructions out loud helps you to focus on what you're reading, not what you think you're reading. Onlookers might think you're nuts, but you have already proven that thought because you have spent a bunch of money setting up a little airplane that flys because you wiggle a couple of little sticks! Yup, you're nuts, just like all the rest of us. In step 14 note the offset bend in the one pushrod wire. It's there so that the two wires are moving parallel to each other when clamped together. If you leave that step out, like you did in the video, it's going to bind. After you get the wires properly bent and clamped, make sure you can move them by hand smoothly through full travel.


7. Now hook up the elevator pushrod assembly as you did for the rudder and test. Keep moving in towards center one hole at a time until you get full travel and no buzzing.


I hope this helps some.

Diggr