X9303 programming question

[mporlier]

I just received me TX and love it. But I do have a couple of questions:

I have setup mu throttle curve in normal mode linear from 0% to 100%. Than I adjusted the end points for my throttle servo because it was binding. Now, when I go full collective, my throttle servo reaches the 100% fully open position before the stick reaches the 100% position.

The servo does not bind and when my radio is on the throttle curve page I can clearly see the stick position vertical bar on the point N 5 on the curve when my throttle is fully open.

Question 2 My curve points 1-2 and 4-5 were INH. I activated them to program. Out of curiosity how can I put them back to INH?

Marc

[th3tick]

Question 2 My curve points 1-2 and 4-5 were INH. I activated them to program. Out of curiosity how can I put them back to INH?

Go to those positions and hit the CLR button.

[mporlier]

Thank you, this answers question 2. Now, why is my throttle reaching 100% before my full collective?

Again my question:

I reach full throttle on point No5 of my throttle curve and full collective on point H. Me throttle servo does not bind and I am at 118 on the end point.

[th3tick]

The only things I know which can affect that is your curve, the ATVs, and perhaps programmable mixes.

[Hotwings]

What page of the manual are you having trouble understanding?

[DavidH]

Thank you, this answers question 2. Now, why is my throttle reaching 100% before my full collective?

I am guessing your using a governor of some type. So why worry about it? The governor/speed control will control the throttle.


I see you have 118% on the high ATV. That means the throttle is being told to open fully 18% before it reaches full travel on the stick. I would suggest to put the ATV back at 100%. Then move the ball out on the servo arm for the throttle linkage till the barrel will fully open at 100% ATV and full high stick.

David

[Youngblood]

mpoiler

It sounds like the throttle is not mechanically adjusted to the radio. If you change anything in the radio you need to go and check the mechanics. The throttle trim slider can cause all sorts of problems. If you adjust everything with the trim leaver in the middle it will work differently than if you adjusted things with it in the quarter position.
This is what I do:
1. Measure the distance from the middle of the throttle barrel to the middle of the throttle servo screw – this is the length of the throttle linkage rod.

2. Measure the distance on the throttle barrel to the ball on the throttle arm – this is going to be the distance you make the throttle servo ball from the center of the throttle servo screw to the ball on the servo.

3. Set the radio servo endpoints to 100%

4. Set the throttle trim all the way down

5. Adjust the arm on the servo and motor so that when the throttle is fully closed the motor is fully closed and when fully open the motor barrel is fully open.

The problem is nothing is in a straight line. Everything we do forms an arc causing non linier movement. Measuring the distance from the middle of the throttle barrel to the middle of the throttle servo screw, adjusting the rod to that length, and not changing it is the key. The thing should idle at ¼ trim and cut off when the trim is moved all the way down and be as mecanicly one to one as we can get it.

My 2 cents…
Charles

[mporlier]

Well it took a long time but I found it! I had a programmable mix enabled. Even if no value were entered it prevented somehow my throttle to work properly. I just inhibited it and Voila! Full control now.