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Help - run away servo

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03 Feb 2013 06:16 - 03 Feb 2013 07:07 #5943 by Spyro37
Help - run away servo was created by Spyro37
Hi guys, I have tried using the mCPX and 300X files from here, with some changes on expos, throws, & reversing.
I am having issue, where my aileron servo continuously goes up & the elevator goes down 'till they bind during throttle input.
Video is attached. It's a 130X helicopter

File Attachment:

File Name: model8.ini
File Size:4 KB


Thanks for the help.

[video/]
[/video]

130X + Devo8S + DeViation v2.1.1 (DSM2)
Run away cyclic servos (AIL going up & ELEV going down) issue during throttle.
Attachments:
Last edit: 03 Feb 2013 07:07 by Spyro37.

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03 Feb 2013 07:21 #5947 by sbstnp
Replied by sbstnp on topic Help - run away servo
No idea at first sight.

Do this:

1. Power down your heli
2. Go to Channel Monitor on the TX
3. Move THR stick
4. Observe which channel(s) move
Devo 10 + 4in1
Spektrum Dx9
FrSky Taranis + TBS Crossfire

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03 Feb 2013 07:22 #5948 by vlad_vy
Replied by vlad_vy on topic Help - run away servo
I don't see problems at model ini file, except I don't understand why you need min and max values = 80 for ELE and AIL. Min and Max values will limit travel, not adjust travel. As a result you have dead bands at max and min stick travels for AIL and ELE. Use scale for travel adjust.

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03 Feb 2013 07:26 #5949 by Spyro37
Replied by Spyro37 on topic Help - run away servo
Bar shows Ch1 & Ch6 moves with the throttle stick accordingly.
Thanks

( have done this on both my 130X) with the same issue.

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03 Feb 2013 08:08 - 03 Feb 2013 09:17 #5950 by Spyro37
Replied by Spyro37 on topic Help - run away servo
I just tried it on my mCPX (Devo8S), & it's doing the same thing
I also changed (increased) the min & max values of the ail and elev.
I get the same issue as well.
I have tried using other models files with the same result.
Last edit: 03 Feb 2013 09:17 by Spyro37.

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03 Feb 2013 08:09 #5951 by vlad_vy
Replied by vlad_vy on topic Help - run away servo
answers.horizonhobby.com/answers/6449/pr...ons.htm?sort=recentq

Question
Why is my new blade 130X falling forward and to the left when spooling up?

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03 Feb 2013 17:01 - 03 Feb 2013 17:02 #5964 by clearprop88
Replied by clearprop88 on topic Help - run away servo
I have a new 130x, and I'm having the same problems using a DX6i TX.
I was told by several friends who fly this heli, and also the "130x expert" at my LHS that it's the nature of the beast. They say to spool it up, and pop it off the ground. Once in the air it's very stable.
I find that if I stir the cyclic stick during spoolup that the disk settles down, and I can takeoff without a blade strike.
I guess it takes some getting used to.
I fly it with my Devo 8, and it does the same thing.
Last edit: 03 Feb 2013 17:02 by clearprop88. Reason: add

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06 Feb 2013 01:16 - 06 Feb 2013 01:17 #6069 by lasakro
Replied by lasakro on topic Help - run away servo
Clearprop- This guy in the video has the similer issue going on with his Spk. Tx. His solution for 200+ flights was sub-trim. :evil:

Last edit: 06 Feb 2013 01:17 by lasakro. Reason: Edit Video link

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06 Feb 2013 01:50 - 06 Feb 2013 05:06 #6070 by clearprop88
Replied by clearprop88 on topic Help - run away servo
Thanks very much for that video lasakro.
I will definitely try that.
It looks like it will solve the problem.
I always thought that subtrims were not to be used on a 3 axis gyro, but I can see that it works for this heli.

I'm having the same problem with my AR7200BX. I wonder if subtrims would work on that one.
Unfortunately I pulled it out of my 300X so I can't test it now.
Last edit: 06 Feb 2013 05:06 by clearprop88. Reason: add

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17 Mar 2013 09:38 #7847 by Yaw2
Replied by Yaw2 on topic Help - run away servo
Did this work for you? It worked for me, but when I first plug in the 130 I have to redo the subtrims every time. My tx saves the settings but it does not work on the heli until I bring the subtrim to 0 then back to what I had it before. Does this happen with you?

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17 Mar 2013 09:58 - 17 Mar 2013 10:03 #7848 by domcars0
Replied by domcars0 on topic Help - run away servo

Yaw2 wrote: Did this work for you? It worked for me, but when I first plug in the 130 I have to redo the subtrims every time. My tx saves the settings but it does not work on the heli until I bring the subtrim to 0 then back to what I had it before. Does this happen with you?


Hi,
I think, this is completly normal... the 130X, as lot of cheap FBL systems, record all channel values on each startup as 0 values (whatever the channel value sended by the TX is). So even if you put subtrims this is recorded by the RX as the 0 value after binding process. Subtrims are completly unnecessary on such models.
Devo 10 (+7e) owner. It's mine, please don't touch it with your big fingers :angry:
Last edit: 17 Mar 2013 10:03 by domcars0.

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17 Mar 2013 17:30 #7865 by Yaw2
Replied by Yaw2 on topic Help - run away servo
Thank you for that. It's just annoying that I have to adjust subtrims in the first place. I called horizon hobby about this and they recommended that I send it in to their service center. Do you think this is worth it?

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17 Mar 2013 19:55 #7873 by Spyro37
Replied by Spyro37 on topic Help - run away servo
Have you tried using a Spectrum radio with it?
If it's not doing the same thing with a Spektrum radio with their Tx's recommended setting, then nothing is wrong with your Heli.
I just don't want you to spend money on shipping your 130X to Horizon if nothing is wrong with it.

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17 Mar 2013 19:58 #7874 by Yaw2
Replied by Yaw2 on topic Help - run away servo
I have not. I do not have one available to me, maybe I'll consider a dx8, a JR, or a Futaba. Any recommendations?

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17 Mar 2013 21:17 #7880 by Spyro37
Replied by Spyro37 on topic Help - run away servo

Yaw2 wrote: I have not. I do not have one available to me, maybe I'll consider a dx8, a JR, or a Futaba. Any recommendations?


To this date, I can't fly both my 130X with my Devo8S and Deviation FW. I have problems as well. So I have been using my DX6i.
My 8S with Deviation FW works with other helis and planes though. But not with the 130X.

Hope you know someone that has Spektrum (and with 130X), and bind your 130X with his Spektrum that has 130X profile already programmed.

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