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« on: January 23, 2017, 10:18:24 AM »
anshulkatta
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Hi all,

After struggling much , i got my first flight...the problem was my battery , i got new one , and it is now taking off correctly..

however , there is problem very common but i see no solution on internet in famous RC forums .... i asked this one on CC3D librepilot forums too .all they say is tighten the nuts properly..duh..

the problem is - the tightened unit comes off from the motor , i mean the whole assembly with props.......and then it crashes.. Sad

below is pic of the part which is i am talking about..please dont say ...tighten it...i mean...it is not tightened..it is just put on motor...on all other motors, it is not happening..only on one motor...

http://www.bladehobbies.co.uk/ekmps/shops/33fb39/images/rc-3.17mm-prop-adaptor-for-motor-propeller-plane-multicopter-quad-tri-hex-octo-484-p.jpg
First flight...props goes off


Please help
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« Reply #1 on: January 23, 2017, 10:56:11 AM »
tonyStark
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I also face the same issue... when my quads tumble and strikes the ground ..this nut comes out (motor still spinning a bit).... many a time I spend my time searching for this nut...  Head Scratching
The soln: Just tie one end of a thread in the nut hole which is used to tighten it and other end to the quad boy.. This will save your time but yes it will still pop up no matter how much you tight it. Bang Head
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« Reply #2 on: January 23, 2017, 11:29:26 AM »
SK1701
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set acc_hardware = 1
If only the nut is coming off, use a nylon locknut (nylock) instead of those useless cone shaped nuts. You usually need M5 nuts. I think Indian.hobby.Shop on eBay has them. I am not sure what to do if the whole prop adapter comes off since I have never used that type
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« Reply #3 on: January 23, 2017, 01:24:43 PM »
kiran rc
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Which motors are you using? Do they have 3mm shaft? There are two sizes of prop adapters available with marginal difference in bore size. If you use a 3.17mm adapter on a 3mm shaft, it comes off.
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« Reply #4 on: January 23, 2017, 02:50:59 PM »
anshulkatta
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yes..3.17mm...it might be true....but that came with the motor itself...
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« Reply #5 on: January 23, 2017, 02:58:42 PM »
kiran rc
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Quote from: anshulkatta on January 23, 2017, 02:50:59 PM
yes..3.17mm...it might be true....but that came with the motor itself...
Which motor?
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« Reply #6 on: January 23, 2017, 02:59:58 PM »
anshulkatta
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3rd one...but that doesnt matter...it happened to me before...but this motor is new one..and i am using the nut and adapter which came with it
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« Reply #7 on: January 23, 2017, 03:39:56 PM »
Devanesan Andrews
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Bro.. I guess this may help... It works well and good for me..
maxresdefault (1).jpg
Re: First flight...props goes off
* maxresdefault (1).jpg (46.94 KB, 800x450 - viewed 225 times.)
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« Reply #8 on: January 23, 2017, 04:03:38 PM »
anshulkatta
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what... Huh?

but this might interfere with prop rotation ...can you explain what you did there  Shocked
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« Reply #9 on: January 23, 2017, 04:21:25 PM »
vineet
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do not use it ,change your motor immediately
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« Reply #10 on: January 23, 2017, 08:08:04 PM »
manojswizera
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Quote from: anshulkatta on January 23, 2017, 04:03:38 PM
what... Huh?

but this might interfere with prop rotation ...can you explain what you did there  Shocked
those extra long ends are to be cut, and it does not interfere with the prop rotation.
though i did not recommend , it works fine for me many times.especially on planes where zip ties pop off, and thus save props.
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« Reply #11 on: January 23, 2017, 08:27:56 PM »
saikat
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wrap cellotape around the motor shaft and then put on the prop adapter

just one or two layers - do not overdo it


or if you have heatshrink tube even better - put a piece over the shaft - shrink it
and then put on the prop adapter
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« Reply #12 on: January 23, 2017, 10:20:23 PM »
rajjames
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How about using loctite?
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« Reply #13 on: January 24, 2017, 10:24:05 AM »
anshulkatta
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but why..what motor has to do with anything...but one of my electronics friend told me that watch the rpm of motor...is it too fast...?
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« Reply #14 on: January 24, 2017, 10:25:46 AM »
anshulkatta
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can i use glue or fevi quick ?
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« Reply #15 on: January 24, 2017, 11:41:24 AM »
saikat
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Why don't you try the non invasive solution first ?

... Try first with cellotape . if it doesn't work you can always go for other methods
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« Reply #16 on: January 24, 2017, 11:42:31 AM »
anshulkatta
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Roger that...will do it..and post results with other methods..  Salute
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« Reply #17 on: January 24, 2017, 12:39:58 PM »
saikat
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Quote from: anshulkatta on January 24, 2017, 10:24:05 AM
but why..what motor has to do with anything...but one of my electronics friend told me that watch the rpm of motor...is it too fast...?


tell your electronics friend to use some logic .... do you not think that if the motor was faster
than the others , then that end would keep going up ??

secondly ... when you test your quad .... tie it down and take it up to full throttle ... you
can check the ingtegrity of your fastened props safely.
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« Reply #18 on: January 24, 2017, 01:41:42 PM »
anshulkatta
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bhai gussa mat ho...mai test karta hu..ha ..i can tie it down..thats quite good to know...because half of the time..it drops down like a fallen angel   Hats Off
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« Reply #19 on: January 24, 2017, 09:09:42 PM »
topalle
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The only reason I can think of is that the adapter is not of proper size, i.e., motor shaft is smaller than prop adapter dia.
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