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Propeller adapter failed during first flight

andrewyakovenko
Fri, 11 Mar 2016 13:21:02 GMT

Today I tried to perform my first flight with my X Plus One. Right after the takeoff one of the propellers went off and the craft crashed, even though everything was installed correctly and behaved well during the preflight inspection. After the crash I found propeller and the pieces of the propeller adapter, the adapter was broken. I took pictures of it: https://www.dropbox.com/s/ufnjne6ik7natc2/20160311_143402.jpg?dl=0 https://www.dropbox.com/s/vqh88i9mf5wj3m0/20160311_143426.jpg?dl=0 It seems that the shaft was too deep in the prop adapter and reached the narrow part where the screw thread starts. Luckily, the craft was just about 1 meter above the ground when the accident happened and didn't receive any serious damage. How can I order a replacement prop adapter or maybe a couple of them? I don't think I can find any in the shops here in Ukraine.

devynm
Fri, 11 Mar 2016 17:19:13 GMT

Andrew, I have sent you an email regarding the spinners. I am sorry to hear about this misfortune. If you have any other questions, please don't feel shy and contact us at support@xcraft.io. Thank you for letting us know, I will help in any way that I can.

cocreatr
Sat, 12 Mar 2016 12:34:13 GMT

Just assembled my X+1Pt, noticed the spinners ride at different heights, about 2mm difference. Tried re-seating, one got a bit lower, but there still is a clear difference. Anything else you recommend, other than tightening the nuts well and checking before each flight? After all we are stressing plastic and there may be some give, causing a slippage under power.

devynm
Sun, 13 Mar 2016 01:00:22 GMT

@cocreatr- If you could send a picture to support@xcraft.io I will have Tech Support contact you first thing on Monday so we can troubleshoot the issue. Thank you for letting us know and I will keep in contact with you so we can get you flying.

cocreatr
Sun, 13 Mar 2016 01:25:45 GMT

Thank you, Devyn, No worries, this condition is not critical, propellers airworthy. [IMG_4144](//muut.com/u/xcraft/s1/:xcraft:wCIs:img_4144.jpg.jpg) [IMG_4145](//muut.com/u/xcraft/s1/:xcraft:bbNM:img_4145.jpg.jpg)

bendrexl
Mon, 14 Mar 2016 19:30:24 GMT

> @cocreatr > Just assembled my X+1Pt, noticed the spinners ride at different heights, about 2mm difference I also noticed this as I was taking mine out yesterday, they just don't seem to seat on the motor shafts consistently. 3 of my spinners sit quite low on the shaft, which is a bit worrisome seeing that Andrew's apparently separated where the drilled bore met the threads...

devynm
Mon, 14 Mar 2016 22:16:52 GMT

@cocreatr- I got a notification you wanted to Skype but didn't see you on the page. Please call tomorrow between the hours of 8am-3pm PST and I will have our Tech Support work that out with you. I apologize I didn't catch that notification in time.

devynm
Mon, 14 Mar 2016 22:23:11 GMT

@bendrexl- have you tightened the spinners with a small rod onto the motor through that pinhole? It should be snug securing the propeller but not so tight as to break it. If you could insert some pictures I will have Tech Support look at it. Thank you for your reminder about the height difference.

cocreatr
Tue, 15 Mar 2016 12:24:56 GMT

@devynm no worry, we are so many timezones apart, it may be hard to find a time when you work and I don't sleep. Will leave messages for possible schedule via Skype.

bendrexl
Tue, 15 Mar 2016 18:02:27 GMT

@devynm - yep, tightened evenly just to 'snug', not overly tight as they are aluminum. However, the height isn't affected by how snug the spinner is, just the size/depth of the spinner's bore I think.

bendrexl
Tue, 15 Mar 2016 18:21:23 GMT

Also I had a prop detach yesterday, thankfully I was only hovering a few feet high at that moment! The short drop still bent/broke the bottom pylon's landing support rod though :( Inspecting the spinner, I noticed a small bit of metal stuck between two of the prongs, preventing that spinner from gripping the shaft as tightly as it should. (see photo attached) [IMG_20160314_220659](//muut.com/u/xcraft/s3/:xcraft:uPRv:img_20160314_220659.jpg.jpg) [IMG_20160314_220903](//muut.com/u/xcraft/s3/:xcraft:BZMS:img_20160314_220903.jpg.jpg)

devynm
Tue, 15 Mar 2016 19:18:47 GMT

@bendrexl- If you could arrange a Skype call for an hour out, let's take care of this with Tech Support.

devynm
Tue, 15 Mar 2016 20:54:16 GMT

@ben- Thanks for calling, I will follow up with you soon.