Photo tutorial how to check for cracks in the plastic around the motors

Discussion in 'General Discussion' started by SparkoRC, Feb 10, 2016.

  1. SparkoRC

    SparkoRC Active Member

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    No just used the standard Yuneec props which were balanced with the Dubro prop balancer fitted with the appropriate threaded rod, and the prop blades and hubs were finely balanced.

    I don't think this is the issue I suspect the cause will be tracked down to one or both, design and materials used I also noted some user on this forum has had the same failure after just 1 hour of use from purchase, bearing that in mind it speaks volumes what the cause is, also because the cracking is not visible without partly dismantling there must be lots out there that's not been found yet, and quite conceivably a lot would have cracked in the first hour of use.

    At the moment I am seriously disappointed by not receiving the customer service care we should all expect from a product which is evidently failing so soon after purchase which has a inherent fault.
     
    Last edited: Feb 23, 2016
  2. chase

    chase Member

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    Actually you might see better results using carbon fiber blades as this video demonstrates:

     
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  3. whe

    wherry Active Member

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    I finally got around to checking mine and found 1 crack in 2 different pods. These 2 pods are diagonally across from each other.

    I guess I will make the call to Yuneec, because I still have a bit of warranty left. We will see what happens.
     
  4. Wieg1

    Wieg1 Member

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  5. SparkoRC

    SparkoRC Active Member

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    Still waiting to here back from them after numerous emails after initial contact and no reply's back, my patience is wearing a bit thin now, one would have thought at least an apology would have been a good starting point to customers which have found this problem, but no such comments have been received at least I personally have not !

    So at the moment I'm one very dissatisfied customer on how this has been dealt with at present.
     
  6. whe

    wherry Active Member

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    I just talked to Yuneec. They emailed a return authorization and will be sending a UPS label later today.
    Guess my bird is going on a trip back to California for repairs. :D:(
     
  7. SparkoRC

    SparkoRC Active Member

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    I guess US customer service is quicker dealing with their loyal customers !
     
  8. SparkoRC

    SparkoRC Active Member

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    Good news just heard back from Yuneec Customer Service in the UK today asking me to send the airframe in minus the undercarriage for a body swap or complete replacement !

    Hopefully this will turn into a good outcome and no more cracks appearing, I will keep everyone informed once I receive it back and given it a few flights possibly up to 9 -10 hours, because that was the flight time when cracking appeared following a inspection.
     
  9. Jagerbomb52

    Jagerbomb52 Moderator Staff Member

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    Good for you. Glad it worked out for you.
    On another note I wonder how far Yuneec will take this? It would seem to be a nightmare of frame changes. And than the turn around times for repairs will escalate and nobody will be flying as their quads are all in the shop LOL
    Hope it all work out for the better :)
     
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  10. SparkoRC

    SparkoRC Active Member

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    I'm not sure if I received a lemon with my purchase, because the ST10+ failed after 5 weeks and had to be returned and I had only just stuck a excellent anti glare screen protector on that I had only just previously imported from Germany, the last few hours my quad has flown I've not bothered sticking a new screen protector on just in case the replacement fails again in a short time.

    Hopefully when I receive my quad back repaired I can start building my trust back with the brand.
     
  11. kan

    kantcme Member

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    Brand new, Zero flights. Front right and rear right both have the issue with the front right being the worst of the two.

    Location USA.

    File_000.jpeg File_001.jpeg
     
  12. nrrtrains

    nrrtrains Well-Known Member

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    hi
    what epoxy did you use and i know you will be checking for future cracks , please let us know how the epoxy holds ups . thank you
    fly safe
     
  13. Arbutus

    Arbutus Active Member

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    Last edited: Mar 7, 2016
  14. Mat

    MattiasNilsson New Member

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    I have cracks under all four motors. Brand new Q500 4K, new out of the box with zero flights.

    Location sweden.
     
  15. SparkoRC

    SparkoRC Active Member

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    I would advise getting in touch with yuneec customer service and they will just swap it out, whilst I see some users have made plates to hopefully stop any cracking unless this modification has been approved by Yuneec, particularly if the Typhoon is still under manufacturers warranty period, I would not go down that path because if something failed and caused a accident or was a total loss, yuneec would not be held responsible because someone else has modified it.

    I agree that if anyones craft is out of warranty then fitting these plates may well prove the best answer to date, because yuneec as far as I know have not come up with a solution to solve the problem of cracking, and myself coming originally from a phantom background us owners found better cures for problems than DJI ever did, and for this reason I'm part expecting when I get my own typhoon back it could suffer the same fault again without any actual modifications done to the airframe.

    Your actual fault of cracking it looks like in your case the torx screws have been over tightened causing the cracks during assembly at the manufacturers, but unfortunately that not been the cause with a lot of other users typhoons which is still not fully understood why this is happening at the present their is no clear pattern as to why some have cracks after a few hours of use, some have cracks after 10 hrs of use, and some don't appear to suffer with cracks at all !
     
  16. William Ball

    William Ball Active Member

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    I emailed Yuneec last week. I haven't heard back from them. I also told them about this thread and asked them to pop over and have a read. Doubt they will.
     
  17. whe

    wherry Active Member

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    I feel the whole thing boils down to using lower grade plastic than what was needed for the job. There are plastics that would hold up much better than what they used.
     
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  18. Kevlec

    Kevlec New Member

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    I am in Brisbane Australia, my Q500 4K motor mounts are cracked.
     
  19. Lawrence

    Lawrence Active Member

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    I have found a crack on 1 of my Chroma pods. Not where the screws are, but on the outside where the motor sits in the pod. Gonna try crazy glue.
     
  20. AdronBill

    AdronBill New Member

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    I've recently ordered a Q500 4K and am anxious to see how I do with it. After starting small, building a tricopter from scratch and eventually purchasing a Phantom 2 with which I've had good fun, I hopefully am not guilty of jumping in over my head with too much too soon. Everything I've heard and read about seems to indicate that the Typhoon is a solid machine. The one bugaboo that I only recently discovered (after my purchase of course) is the cracking motor mount issue. I understand that many of the Phantoms have developed a similar problem. I would be very interested in hearing more about this problem and how Yuneec is planning on addressing it. Anyone?
     
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