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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › X9303 Aileron Gimbel Wire Chafing Issue
08-19-2008 08:12 AM  12 years ago
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RAK402

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Alhambra, CA

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X9303 Aileron Gimbel Wire Chafing Issue
I just spotted this on Flying Giants and RCU. I have no personal experience with the issue, but posted it from a safety standpoint (and I am a JR/Spektrum diehard) as I have not seen it here yet:

http://www.flyinggiants.com/forums/...ng-problem.html

http://www.rcuniverse.com/forum/m_7840717/tm.htm
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08-19-2008 08:46 AM  12 years ago
Dood

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Yeah, A few guys here had some problems with the wires.

dkshema opened his battery compartment up the day he bought it, this is what he found. He also started a thread about it.

Then there was a guy on here, he wasn't so lucky.

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08-19-2008 08:55 AM  12 years ago
Dood

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What I did with mine was cut a chunk of very soft foam and stuffed it in there, on the side where the wires are. That keeps the battery from sliding around, preventing crushing, chaffing and breaking of the battery leads.

2 cents worth of foam might save a $2500 helicopter, or a $600 transmitter.

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08-19-2008 01:51 PM  12 years ago
pcinc

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Westfield, MA

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I ran into the same issue on my 9C and cured it the same way as Dood did his. The battery doesn't shift at all anymore, you just have to route the lead carefully when installing so the battery doesn't pinch it or end up on top of it.
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08-19-2008 02:50 PM  12 years ago
Eury

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Dover NH USA

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That's not the problem. The problem is that the cyclic gimbal wires are rubbing on a voltage regulator inside the TX and being cut through. My X9303 doesn't show any sign of the chaffing, but it seems to be pretty widespread. If you are using one of these radios, you NEED to check this. It's the kind of thing that will cost you your heli.

Here's a paste from FG
Hey guys several of our members have PM'ed me asking I put up an alert on the JR 9303 2.4 version. Apparently the voltage regulator next to the gimbal is cutting into the wire bundle that rests on it. It appears to be a simple fix, or you could do some preventive maintenance, OR better yet, if you find your wires to be frayed, give Horizon service a call. BUT, since this problem is confirmed with multiple pictures on multiple radios, I would suggest either checking the condition of your radios wires, or having Horizon tech dept give it an eyeball before flying the radio again.

Now, we are in no way slamming JR or the 2.4 9303. Its a great radio, and by making sure this little issue is fixed or avoided, it can continue to be a great radio.

The picture attached is 1bwana1's radio, and it shows just how sever this problem can be.

The guys have a thread going on here to discuss the problem and the fix.
Nick Crego

Citizen #0168
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08-19-2008 04:28 PM  12 years ago
RAK402

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Eury,

The gimbel wiring problem is the one I was referring to. I have changed the title to avoid confusion.

Thank you.

Dood,

I did not know about the battery wire problem, so good that you posted that as well.

Thank you.
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08-19-2008 05:00 PM  12 years ago
Swoop

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Thanks Eury, I must have been under a rock because this is the first I've heard of this. I'm pulling my radio apart as soon as I'm done typing.

As for the battery wiring, I added foam when I upgraded the battery.
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08-19-2008 08:22 PM  12 years ago
QuantumPSI

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Atlanta, GA

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Could someone post a link from the other threads? Tried searching and had no luck....now where was I, dh/dt = BS-dx/dt
I will fly you forever... till earth do us part
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08-19-2008 08:28 PM  12 years ago
Dood

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I didn't know about the gimbal wires.

I think it may have happened to me, though.
My right stick went completely dead about 2 months after I got the radio. Luckily I was simming with the radio at the time it happened.

I sent my radio in for warranty repair and it has been fine ever since.
I didn't bother to open up the radio and look at it to see if it was the wires.
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08-19-2008 08:35 PM  12 years ago
WreckRman2

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Orlando, FL

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Yep it's out there... mine is cut through almost 80%.________________
David Smith
407.937.9556
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08-19-2008 08:38 PM  12 years ago
Rick_H

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Boulder City, Nevada

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I checked mine this morning after seeing this tread. I have only had my radio for two weeks and only flown with it a total of 6 flights and I can see where it has started to rub away at the black wire coating. It not through it yet, I am very glad this thread was posted. I have put a little dab of silicon on the edge of the regulator that is cutting into the wire. I will keep an eye on it to see if it works or not. JR is going to have to come up with a fix for this that hopefully won't require all of us to send our radios back in to them.

Rick.
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08-19-2008 09:08 PM  12 years ago
RAK402

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Quantum,

I posted the links at the very top of this thread.

There are photo graphs on RCU and FG (on those threads).

I just found another here on RR:

http://runryder.com/t453791p1/
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08-19-2008 09:21 PM  12 years ago
Dood

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Your links don't work. (the ones in the first post)  ▲
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08-19-2008 09:22 PM  12 years ago
RAK402

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Dood,

Thankyou.

I tested them when I first posted them, and they worked, but then they stopped working for some reason.

I have just reposted them and they work, at the moment.

Can you give it a try now?
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08-19-2008 10:15 PM  12 years ago
Simmer

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Massachusetts

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Checked mine just now. I see that the clear shiny coating is just starting to rub off on my wire bundle (accross two of the wires)

It has not damaged the integrity of the wire but it does show a potential to wear more. How fast, and how much remain to be seen.... or hopefully not. I placed a small piece of electircal tape over the area for the moment, but the problem is that chip it is rubbing on. I like the idea of fileing slightly the sharp edges of the chip but on the other hand, I am a little concerned to be doing anything intrusive.

Lets see lose about 1500 in heli? or file the chip

thinking..... thinking.....
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08-19-2008 10:26 PM  12 years ago
Simmer

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Massachusetts

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And this just now after sending email to Horizon

\
Chuck,

Thank you for your e-mail. We are currently investigating this issue and will be posting a reply on our website via a product bulletin in the next day or two. Stay tuned for more information.

Sincerely,
Horizon Hobby Product Support
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08-19-2008 10:33 PM  12 years ago
january flyer

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Lake Charles Louisiana 70601

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I just looked at mine and it showed no wear what so ever and mine is a old 9303 that I gotten brand new. Thanks for the post! I will keep an eye on it or just grind it down a little or take some fuel tubeing and cut it and put it around the wire and hold it in place with very small zip's. Later!
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08-19-2008 10:37 PM  12 years ago
WreckRman2

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Orlando, FL

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This effects only the 9303 2.4ghz radio... not the 72mhz.________________
David Smith
407.937.9556
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08-19-2008 10:40 PM  12 years ago
kingair

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Just a touch of chafage on mine so I rerouted the wires a little bit. I'll check it again in a couple months. It'll be interesting to see if horizon comes up with a fix that doesn't involve sending it in.There is a very fine line between "hobby" and "mental illness."
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08-19-2008 10:51 PM  12 years ago
midwestpilot

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Crystal Lake, IL

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horizon fix
http://www.jrradios.com/Articles/Ar...?ArticleID=1822
In life there is no spacebar!

Rich Erikson AMA 6175
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Home✈️Aircraft🚁HelicopterHelicopter Main Discussion › X9303 Aileron Gimbel Wire Chafing Issue
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