700x tail pushrod - HeliFreak
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Old 03-06-2017, 01:12 PM   #1 (permalink)
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Default 700x tail pushrod

So i just purchased the 700x kit and have a question about the short pushrod for tail servo. It is detailed in the 700 electric thread with some issues showing up. Is it advisable to fly the stock rod or what is the factory recommended solution? Thankyou!
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Old 03-06-2017, 07:51 PM   #2 (permalink)
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I haven't had any issues with the stock rod or the stock links. It has flown fine and hasn't given me any issues. Some people have stated they don't feel like the links thread on all that much however I feel that it does grab enough of the links to not be to concerned about.

I have roughly 50-75 flights on mine and no signs of the coming apart.
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Old 03-07-2017, 07:52 AM   #3 (permalink)
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Awesome, as this is my first 700 I may be overly cautious. Hearing about issues had me a little spooked. My maiden will be tomorrow morning, super stoked! Thankyou for your reply
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Old 03-07-2017, 08:17 AM   #4 (permalink)
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I was allway sure it will hold well but some reports about not heavying enough thread made me think about it again. I did not remove the carbon from the metal as grumpy did though since mine seems to be just fine as it is.

I did hoever add a bit of epoxy between metal and the ballpan. Enough to glue it together well and only so much that I can remove it if the need arises. I highly doubt it can fail midair like this.
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Old 03-07-2017, 12:40 PM   #5 (permalink)
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Feedback is being provided to the factory regarding this.

We may see a change to the pushrod length in the near future.

That being said, I have not had an issue with my pushrod at this time.
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Old 03-07-2017, 02:29 PM   #6 (permalink)
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The original thread on this issue has photos of a 700X which crashed due to the rod pulling out of the link (photo attached below). If you set up the servo arm properly (i.e. pointing vertically) you only have three threads of 'bite' into the link, i don't care what anyone says, that's simply not enough.

proof:


I don't doubt that for some people it's not failed yet, but that doesn't make it ok. Possibly some rods are worse than others as the amount of thread sticking out varies slightly rod to rod, but at the very best it's highly marginal, at the worst a horrible crash just waiting to happen.
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