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HomeAircraftHelicopterHelicopter Main Discussion › Aliron glitch !! UPDATE 👍
03-26-2015 05:39 PM  3 years agoPost 21
HeimD

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the great southwest

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You fly a TDR with a DX8? Wow. LOL

What was the problem with the DX8? Glitchy pot?

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03-27-2015 02:22 AM  3 years agoPost 22
Cobra 46

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Cambridge il usa

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Didn't do it on the sim. !!!
Going to fly my other jr 550 sat with the radio. Will let u know !

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03-27-2015 04:36 AM  3 years agoPost 23
EEngineer

rrProfessor

TX

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Didn't do it on the sim
Would then think that eliminates a TX stick gymbal pot. issue.

Most likely a servo giving you a warning....

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03-27-2015 06:06 AM  3 years agoPost 24
TMoore

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Cookeville, TN

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Lots of CF on a TDR. Are there any issues involving static on those machines? Spektrums are not known to be very resistant to static.

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03-27-2015 08:35 AM  3 years agoPost 25
EEngineer

rrProfessor

TX

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resistant to static.
That's hard to pin down....

I'll gamble that proper wiring will eliminate such static issues.

Via a separate path all the way to the main batt neg connector.

Static, while present, distributes itself all over a structure.

And it's "common mode"....

Regardless of "static", one wants all the avionic systems referenced from the main batt neg.....such static will also be present on the main batt pos.

Ground your heli frame....from the tail....thru the frame....and the motor mount...all the way to the main batt connector....using a separate wire(small gauge)....to prevent such static from interfering with your avionic systems.

FWIW

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03-27-2015 12:15 PM  3 years agoPost 26
Cobra 46

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Cambridge il usa

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So this Heli is a jr 550
The frame is CF but the tail boom is aluminum painted to look like CF it's also a Torque tube
My reciver was the Spectrum
Ar7610. (One sat model) mounted on the left side of the lower frame my other Helis all have two sats! I am thinking If it were static it would happen more than just a left turn . I put my xg14 radio in it last night and will fly it this weekend , if it's gone then it's the reciver ( maybe ) if not I'll change out the aliron servo then the pitch servo .
Thanks guys !

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03-27-2015 02:54 PM  3 years agoPost 27
jason46

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MI

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little interjection
So I thought I had a glitch with my Warp the other day, the aileron jerked, although it may have been a shiver as it was the 4th flight on a 35 degree day.

If it was really a "glitch" would the status light then be flashing on the Spektrum sat?

I have all my cables in a single large bundle and if the koby had a toroidal ring it was removed. I was planning on separating the bundle and have ordered a toroidal ring.

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03-27-2015 03:51 PM  3 years agoPost 28
HeimD

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the great southwest

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Lots of CF on a TDR. Are there any issues involving static on those machines?
OP isn't flying a TDR. The other guy who was flying a TDR also had the same thing happen in the sim, so it was a TX issue and not static. Try to keep up.

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03-27-2015 05:12 PM  3 years agoPost 29
TMoore

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Cookeville, TN

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Static occurs on the TRex's too, I've seen it.

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03-27-2015 08:42 PM  3 years agoPost 30
Cobra 46

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Cambridge il usa

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I talked to horizon today for more ideas they suspect a little to much gain on Aliron ,in my tags 01 fbl he said a hurricane would be a steady bank at which that would show up !

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03-27-2015 10:11 PM  3 years agoPost 31
GMPheli

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W. Bridgewater, MA USA

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"Ground your heli frame....from the tail....thru the frame....and the motor mount...all the way to the main batt connector....using a separate wire(small gauge)....to prevent such static from interfering with your avionic systems.
FWIW"

Years ago I had a PHI Hurricane with G-10 frame (72mhz ppm) that had a random tail glitch. One of the things I tried to solve it was grounding everything metal on the frame to the neg battery as you suggest. As soon as I started the engine (glow), all the servo's went absolutely crazy with glitches. I cut the ground wires and the crazy glitching went away. Have no idea why, but this is what happened. The random tail glitch turned out to be a non stock metal tail pulley contacting the frame.

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03-27-2015 11:10 PM  3 years agoPost 32
dkshema

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Cedar Rapids, IA

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1. The helicopter is a JR E6. Not a TDR, not an Align product.

2. The JR E6 has a SHAFT DRIVEN tail. Not a static generator.

3. Problem only appears to occur on a left turn, and only on Aileron.

You have a shaft-driven tail rotor, and you're not going to see a static electricity build up, or discharge. Look somewhere else.

Time to check out your servo. Perhaps a dirty feedback pot, perhaps a wiring issue. Maybe some chafing and exposed conductor rubbing the frame. I vote for a servo pot being bad.

-----

EE -- The "static" being discussed, is more accurately described as "static electricity discharge". Some BELT DRIVEN tails have been known to mimic a Van De Graaf generator. Eventually, enough static charge builds up to the point where there is a nasty discharge -- in the form of a serious spark, an EMI rich event. This static discharge has been known to cause the micrcontrollers in some receivers and some gyros to go through a power-up reset sequence, something you really don't want to see while airborne.

-----
Dave

* Making the World Better -- One Helicopter at a time! *

Team Heliproz

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03-28-2015 12:42 AM  3 years agoPost 33
HeimD

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the great southwest

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I talked to horizon today for more ideas they suspect a little to much gain on Aliron ,in my tags 01 fbl he said a hurricane would be a steady bank at which that would show up !
Sorry, but that Horizon guy was full of BS. If your gain was too high, it wouldn't be just a glitch and only in one direction. It would be doing the high speed wobble thing like when tail gain is too high basically all the time. And, it's "aileron", by the way...

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03-28-2015 01:26 AM  3 years agoPost 34
EEngineer

rrProfessor

TX

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Eventually, enough static charge builds up to the point where there is a nasty discharge -- in the form of a serious spark, an EMI rich event.
That's why I provide a separate path to main batt. negative for "common-mode" static potential fluctuation.

When I say "common-mode" the static potential is present on the main batt. positive, also.

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03-28-2015 01:38 AM  3 years agoPost 35
Cobra 46

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Cambridge il usa

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Dkshema
I looked at all the wires and rerouted my antenia that didn work . I am going to replace the two servos I have some Spares .

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03-28-2015 01:40 AM  3 years agoPost 36
EEngineer

rrProfessor

TX

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72mhz
That won't happen using 2.4GHz systems, since there's no IF stages to down convert the 72MHz signal to the 455KHz baseband.....prone to interference by metal on metal "squeaking".

With 2.4GHz systems, the signal digitally processed which is very much less subject to this kind of interference.

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03-28-2015 02:04 AM  3 years agoPost 37
TMoore

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Cookeville, TN

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Are saying that 2.4Ghz radios won't glitch or lockout in the face of static discharge?

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03-28-2015 02:05 AM  3 years agoPost 38
dgoss999

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UK - Lancashire

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That won't happen using 2.4GHz systems
One liners again eh? EEngineer. ..

Rather than expect us to be as clever as you, why not try explaining yourself like "that won't happen using 2.4ghz systems BECAUSE............" rather than reverting to your old rubbish responses. You where doing quite well up to this point!

DG.

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03-28-2015 02:07 AM  3 years agoPost 39
EEngineer

rrProfessor

TX

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rather than reverting to your old rubbish responses.
Stuff it....

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03-28-2015 02:12 AM  3 years agoPost 40
EEngineer

rrProfessor

TX

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Are saying that 2.4Ghz radios won't glitch or lockout in the face of static discharge?
No, and I edited my previous post in an attempt to explain more specifically what I meant.....

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HomeAircraftHelicopterHelicopter Main Discussion › Aliron glitch !! UPDATE 👍
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