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Old 07-23-2017, 12:52 PM   #1 (permalink)
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Default Weird problem with my NX4

My NX4 has developed a weird problem. From time to time it tilts to the left quite aggressively. This happens every half a minute or so. I can catch and correct this movement when I'm hovering, but of course I cannot do much else beyond hovering with this condition. I have no idea what could be wrong. Is it a problematic servo? a problem in the mini VBar? anything else?

I have asked other heli pilots in my area and no one has ever seen such weird jumps.
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Old 07-24-2017, 01:25 AM   #2 (permalink)
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Possibly the vbar picking up excessive vibrations?

You could pull the logs off the mini vbar and see if there's anything weird in them, might help you get to the bottom of it.
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Old 07-24-2017, 03:04 AM   #3 (permalink)
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FYI, Vstabi team advise not to use a mini vbar on a nitro heli.
Try with a full size or neo unit.
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Old 07-24-2017, 08:37 AM   #4 (permalink)
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Get rid if the mini v.... done

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Old 07-24-2017, 05:21 PM   #5 (permalink)
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Thanks, I have considered it already, maybe I should switch indeed.
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Old 07-25-2017, 08:43 AM   #6 (permalink)
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I know plenty of people running it on a mini v. Unless you have a bad mini v i doubt that is the issue.
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Old 07-26-2017, 08:54 PM   #7 (permalink)
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that problem is due to high vibrations for sure.My BeastX acted same way in couple years ago on Raptor 30.Since that i flying Spirit on all my helis
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Old 07-28-2017, 12:09 AM   #8 (permalink)
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Pull your engine out, take the fan shroud off, then slide the clutch up into the clutch bell.See if they line up perfectly and are absolutely square.
When i maidened mine i was having all sorts of weird intermittent problems with it.Someone suggested the clutch might be broken. When i pulled it apart to investigate i discovered the clutch didn't line up properly.
I slotted the engine mount holes, moves the engine back 2mm till the mounts are right against the frame and now it runs like a dream.
Every issue i thought i was chasing disappeared.
Now my go to heli.
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