Devo10 horizontal stick centering issue

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17 Dec 2013 14:40 - 17 Dec 2013 21:26 #16740 by billmester
Devo10 horizontal stick centering issue was created by billmester
SOLVED!!! Please read below.

Hi,

Please take a look at the video I just made. Watch channel 4 on the channel monitor page.

Anyone seen this effect?

I have this on both of my horizontals. ~10% on the rudder, and ~3% on the Aileron. 0% on the verticals.



Calibration cannot fix this. Nothing is loose or rattling... What is this?

Thanks,
bm
Last edit: 17 Dec 2013 21:26 by billmester.

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17 Dec 2013 15:08 #16744 by rbe2012
Replied by rbe2012 on topic Devo10 horizontal stick centering issue
I have seen similar on my Devo12 where the aux4-7 have a notch where it jumps in. I get different values when coming from one side or the other. This seems to be a mechanical problem where the pot and the notch are not connected good enough so there is some slope.
For one of the sticks this seems not acceptable.

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17 Dec 2013 16:48 #16747 by billmester
Replied by billmester on topic Devo10 horizontal stick centering issue
I'll tear it to bits :evil: (again)
If it is just a slop, I can fix it :-) I hope...

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17 Dec 2013 21:26 - 17 Dec 2013 21:29 #16760 by billmester
Replied by billmester on topic Devo10 horizontal stick centering issue
Took me an hour but it was worth it!!!!

I have added some thin, flat metal sticky tape to the pot sticks... all of them. And it simply worked. After a calibration I get 0 difference on all pots.

I added 2 layers to the horizontal and 1 layer to the verticals.
Different plastic parts... different level of sh!tness in mold quality.

There you go - nice design, sh!tty build quality.

From now on my flight will improve :woohoo:

Thx for the tip, rbe.

As the DEVO range has the same mechanics, I would recommend checking this to all of you guys out there... :whistle:
Last edit: 17 Dec 2013 21:29 by billmester.

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18 Dec 2013 06:17 #16766 by rbe2012
Replied by rbe2012 on topic Devo10 horizontal stick centering issue
Good to hear that you could fix it.
Did you take a photo?

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18 Dec 2013 08:59 #16768 by billmester
Replied by billmester on topic Devo10 horizontal stick centering issue
uh-oh... I knew I forgot something... :whistle:

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19 Dec 2013 14:47 #16800 by billmester
Replied by billmester on topic Devo10 horizontal stick centering issue
Today I had some time to fly. WHAT A CHANGE :woohoo:

When I'll have some time, I'll take it apart again to take some pictures and post them here.

I dont know when though... I have just received my TREX 450 PRO DFC 3GX super combo kit today... I'll try to make the pics before I start to assemble the kit. Otherwise... it will be hopeless for some time ;-)

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16 Feb 2014 20:29 #20399 by carlnoki
Replied by carlnoki on topic Devo10 horizontal stick centering issue
any pictures yet?
PLEEEEEEZZZZZZZZZZZZZ

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16 Feb 2014 21:37 #20403 by billmester
Replied by billmester on topic Devo10 horizontal stick centering issue
sorry - none :unsure:
I'll give a try this week...

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18 Feb 2014 17:32 #20525 by billmester
Replied by billmester on topic Devo10 horizontal stick centering issue
I took the radio to bits and made some pictures today. Hang on, I'll post them tonight. :woohoo:
cheers, bm

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18 Feb 2014 20:44 - 18 Feb 2014 20:47 #20539 by billmester
Replied by billmester on topic Devo10 horizontal stick centering issue
...aaaand here are the pics.
I have put some metal self-adhesive tape on ALL pots, both on the positioning pin and the turn shaft. This cancelled all plays. I had zero play on the verticals, but just in case, I did those too ;)
cheers,
bm


Last edit: 18 Feb 2014 20:47 by billmester.

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19 Feb 2014 01:42 - 19 Feb 2014 01:43 #20558 by Hondawasaki
Replied by Hondawasaki on topic Devo10 horizontal stick centering issue
B) nice diy fix ima give it a go as i have a bit of centering issues as well .
Last edit: 19 Feb 2014 01:43 by Hondawasaki.

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08 Sep 2016 16:36 - 08 Sep 2016 16:45 #53643 by vlad_vy
Replied by vlad_vy on topic Devo10 horizontal stick centering issue
Useful mod, particularly for turn shaft. Even you have not obvious problems, it improves precision for low stick throw.

I think there is a some factory play at this assembly. In my case I can insert pot with metal self-adhesive tape on turn shaft without any additional effort, the same way as without metal self-adhesive tape.
Last edit: 08 Sep 2016 16:45 by vlad_vy.

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30 Mar 2017 05:04 #60932 by vlad_vy
Replied by vlad_vy on topic Devo10 horizontal stick centering issue
It looks like pots don't like if they overtightened by mounting bar. It greatly increased mechanical resistance. I need scrape off some plastic from pot seat on gimbal to eliminate overtightening by mounting bar. Also, brand new gimbal bearings may be gritty. I'm thoroughly wash bearings by petrol and relube by thin oil.

You can easily test it. Move stick to max throw and release. You have to get several damped vibration. If you get only one or two, you have a problem with overtightened pot or/and gritty bearings.

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