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Old 04-10-2012, 10:03 PM   #21 (permalink)
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Its not lazy gyro wag its crazy freakout wag...
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Old 04-10-2012, 10:07 PM   #22 (permalink)
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Turn down your cyclic gain if it is not at 12 o'clock.


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Old 04-10-2012, 10:54 PM   #23 (permalink)
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I tried adjusting cyclic gain per your suggestion with no luck . Goes into crazy tail shudder mode with sudden control inputs.
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Old 04-10-2012, 11:37 PM   #24 (permalink)
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Can you put your gyro into rate mode by reducing gyro gain almost all the way and see what happens. The will help diagnose


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Old 04-14-2012, 03:38 PM   #25 (permalink)
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Well guys...I figured it out. I did some trouble shooting with the tail and when they assembled them at the factory they must have not torqued the screws enough on the plastic mounts. Whats happening is under heavy load the servo mount is pushing up and twisting the servo rod. I noticed this first because I did some extreme pitch pumps for about 10 seconds then brought her down and gave her a once over. Noticed the rod was bent, straightened it back out, and tried again. Same thing, so I torqued the screws to the point where I was afraid of stripping the plastic and it fixed it.

I have the aluminum mounts on their way so I'll be swapping them in along with my H5020G servo, but I'm glad that it was something so simple. Just annoyed it took me this long to finally get some free time to really dig into it.
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Old 04-14-2012, 11:26 PM   #26 (permalink)
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Hmm thats interesting ill have to make sure, i tighten mine up.
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Old 04-16-2012, 03:41 AM   #27 (permalink)
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Interesting. Mine were flexing more just before my (I /think/ unrelated) crash, and got the crazy tail-wag two or three times (very visible on the video). Ordered the aluminum mounts since the tail had to come off anyway.
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Old 04-16-2012, 04:22 AM   #28 (permalink)
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Quote:
Originally Posted by Talesin View Post
Interesting. Mine were flexing more just before my (I /think/ unrelated) crash, and got the crazy tail-wag two or three times (very visible on the video). Ordered the aluminum mounts since the tail had to come off anyway.
Do the aluminum mounts hold tighter? Im prob gonna get some when i get my mks servos.
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Old 04-16-2012, 05:02 AM   #29 (permalink)
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Yeah. There's no flex like the plastic ones, and even pressing *hard* with a thumb, with the screws only lightly tightened they don't seem to move at all; much less tightening them down solid.
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Old 04-16-2012, 04:50 PM   #30 (permalink)
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yeah it seems like once you move the servo mounts or pushrod guides from there stock locations they never hold the same...
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Old 09-07-2012, 07:09 PM   #31 (permalink)
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Default Blade 450X Tail vibration

Quote:
Originally Posted by azezeil View Post
Well guys...I figured it out. I did some trouble shooting with the tail and when they assembled them at the factory they must have not torqued the screws enough on the plastic mounts. Whats happening is under heavy load the servo mount is pushing up and twisting the servo rod. I noticed this first because I did some extreme pitch pumps for about 10 seconds then brought her down and gave her a once over. Noticed the rod was bent, straightened it back out, and tried again. Same thing, so I torqued the screws to the point where I was afraid of stripping the plastic and it fixed it.

I have the aluminum mounts on their way so I'll be swapping them in along with my H5020G servo, but I'm glad that it was something so simple. Just annoyed it took me this long to finally get some free time to really dig into it.
I there, I get this very issue when I stick rudder all the way to the left or right for multiple pirouettes. The tail vibrates violently that I had to land quickly. I don't quite follow your solution described above, any chance of a picture please?
First time I had this issue, I thought it was a bad tail servo so swapped it out to MKS DS95i but it did not fix the problem.
Any help will be much appreciated.

DK
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Old 09-08-2012, 05:37 PM   #32 (permalink)
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Quote:
Originally Posted by krante View Post
I there, I get this very issue when I stick rudder all the way to the left or right for multiple pirouettes. The tail vibrates violently that I had to land quickly. I don't quite follow your solution described above, any chance of a picture please?
First time I had this issue, I thought it was a bad tail servo so swapped it out to MKS DS95i but it did not fix the problem.
Any help will be much appreciated.

DK
From what I understand, azezeil was tightening the screws which fix the two plastic tail servo mounts to the boom.
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Old 09-09-2012, 05:45 PM   #33 (permalink)
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Mine did the same exact thing when I put on the kbdd 62mm tail blades. As soon as I put stockers back on problem was solved.
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