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Title: prop spinning off on a bit if jerk on landing Post by: Darshan for multirotors on June 05, 2015, 08:19:49 PM Hello
I am facing an issue with my recent quad The problem is as follows When I take off there is no issue but when there is a harsh landing or just a rough one , the prop comes out with the prop nut Mostly the motor gets stuck and unable to move by hand but when I open it up , I find no reason for it to stop suddenly No thing in the windings .. nothing with the magnets although I have fixed this problem of motor jamming still the prop pops off Has anybody else experienced this? Title: Re: prop spinning off on a bit if jerk on landing Post by: SK1701 on June 05, 2015, 09:44:58 PM How is the prop fastened to the motors?
Title: Re: prop spinning off on a bit if jerk on landing Post by: meet2ami on June 05, 2015, 10:05:18 PM Any video? Did you try using locknuts? They are better than normal nuts for fastening props with the motor!
Title: Re: prop spinning off on a bit if jerk on landing Post by: Darshan for multirotors on June 06, 2015, 07:10:16 AM The prop nuts came with the motors
The problem is that on landing only that one motors prop spins off whereas the others remain on Title: Re: prop spinning off on a bit if jerk on landing Post by: Darshan for multirotors on June 06, 2015, 10:00:50 AM Anybody facing this issue ? Or anybody knowing how to solve this help is highly appreciated
Title: Re: prop spinning off on a bit if jerk on landing Post by: SK1701 on June 06, 2015, 10:06:54 AM A video might help.
Title: Re: prop spinning off on a bit if jerk on landing Post by: Darshan for multirotors on June 06, 2015, 10:19:14 AM Can't take it cause it happens occasionally when the quad hits the ground with jerk
It doesn't happens always but when it does I have to take a magnifying glass and search for the prop nut (not literally) Title: Re: prop spinning off on a bit if jerk on landing Post by: SK1701 on June 06, 2015, 10:41:27 AM As meet2ami suggested, try using nylon locknuts. They are far more secure than the regular prop nuts. The size of locknut required depends on the diameter of your prop adapter.
Title: Re: prop spinning off on a bit if jerk on landing Post by: Darshan for multirotors on June 06, 2015, 03:08:06 PM i agree but why is only that 1 prop nut coming out?? the rest are as it is ..
this is highly unusual ??? :headscratch: i will try out locknuts if nothing works out Title: Re: prop spinning off on a bit if jerk on landing Post by: rcpilotacro on June 06, 2015, 09:52:13 PM Nut comes Off and Jerking ??? mmmm very peculiar problem with your Nuts i must say !! ;)
Title: Re: prop spinning off on a bit if jerk on landing Post by: meet2ami on June 06, 2015, 11:57:06 PM Is it happening with the same motor or randomly? Try to find out that first. If so, then the thread of that particular motor shaft might be bad. or else try changing the nuts. Sometimes the nut threads are bad. It happened with me once. Crashed my quad as one of the prop flew away. Since then I started using locknuts above normal nuts!!
Title: Re: prop spinning off on a bit if jerk on landing Post by: Darshan for multirotors on June 07, 2015, 06:40:04 AM Looks like there is a thread problem
It is the same motor from which the prop pops off But the point is that it never pops off in air it always pops off when the quad hits the ground with a bit of force The nut won't get out when it's in air I don't get it ??? Title: Re: prop spinning off on a bit if jerk on landing Post by: saikat on June 07, 2015, 10:27:16 AM this happens when the prop is rotating in the same direction that the nut is fastened - the hard landing
gives a little "jhatka" - to loosen the nut eg. a normal nut is turned clockwise to tighten , and a normal prop rotates anticlockwise that is why many multirotor motors are marketed with rotations marked CW and CCW the difference is in the way that the prop nut screws down. solution to above problem 1. reverse the rotation of the motor and use a suitable prop or 2. use threadlock - or in the absence of threadlock - nail polish . or a little feviquik on the shaft glow modellers have long experienced a phenomena where the prop nut comes loose when the engine kicks back Title: Re: prop spinning off on a bit if jerk on landing Post by: Darshan for multirotors on June 07, 2015, 11:48:16 AM saikat sir i have checked the direction thrice and it is the right direction and otherwise also the other motor would would have had also shown something like this
i cant try and glue it by any chance as i am not THAT experienced in flying i break a lot of props [broke 2 yet] and i keep replacing props oftenly |