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Old Jan 01, 2014, 01:47 PM
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United States, OH, Miamisburg
Joined Oct 2013
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V912 tail motor

Tail motor on V912 isnt working right,throttle up and the 912 does a FAST 360,so Im not sure what to look for,is it possible for the motor to go bad and only spin one direction? Problem is BOTH of my 912's are doing it,tried 2 tx's and same thing,really dont want to have to order from banggood and wait 3 weeks to fly again,local hobby shop carries blade helis so is there a blade tail motor that would drop in (or close enough to work?) This happened of course after a minor crash with both of them...weird.....THANKS
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Old Jan 01, 2014, 04:15 PM
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Balr14's Avatar
Germantown, WI.
Joined Oct 2007
21,480 Posts
The heli will spin counter-clockwise if the tail doesn't provide enough push to hold it. It will spin clockwise if the tail motor is pushing too hard. However, you need to provide more info about what the tail motor is doing during these events; does it turn at all, does it turn slowly and never change rpms, does it spin CW or CCW, etc? BTW, all Blade tail motors of adequate size are wound for 3S.
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Last edited by Balr14; Jan 01, 2014 at 04:28 PM.
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Old Jan 01, 2014, 06:16 PM
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United States, OH, Miamisburg
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241 Posts
912

Is spinning counter clockwise,tail rotor is spinning like it should,would a screwed up gyro do this? Pushed up collective and it was air born spinning like a top For a second it started to fly right then...nope
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Old Jan 01, 2014, 07:04 PM
Cranky old fart
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Germantown, WI.
Joined Oct 2007
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Under most circumstances, I would say the tail motor is simply too weak. It's quite common. However, as you stated it occurred to 2 helis after a slight crash, it does seem like other it could be a gyro or FET. I guess I would replace the tail motor first.
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Old Mar 02, 2014, 08:46 PM
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Hello.

I have this exact same issue with my V912 . It started Today.

When I apply throttle it makes complete turns. Counterclockwise.

What is causing this ?
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Old Mar 02, 2014, 09:10 PM
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Germantown, WI.
Joined Oct 2007
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That means the tail motor isn't holding the tail. Most likely it's too weak. They don't last long.
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Old Mar 03, 2014, 07:49 AM
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Tucson, Az
Joined Feb 2007
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Buy cheap/ get cheap .
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Old May 16, 2014, 08:19 PM
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I bought a v912 about 3 months ago and have been flying mine with joy pretty
much everyday without any major issues. I had the factory battery crap out on me after about 30 flights and luckily already had a replacement.
Got my swash plate balanced, did the tx full servo throw mod, moved the battery forward and taped 2 quarters to the front of the battery to find the balance point where the heli hovers perfect without any electronic trim or compensation with the swash plate.

4 days ago I was flying her outside and while I had it in a slide, I smacked the power line (the actual line, not pole) and the heli went into an uncontrollable spin but I managed a smooth/soft landing. My throttle was still working thank god just spinning in circles really fast. Anyways, ever since, it has been doing what your heli is doing from what it sounds like. Check your tail motor gear (the brass piece, it stripps really easy) and the actual plastic spurr gear may has slightly chewed up teeth or like mine have spots on the plastic gear that have no teeth so it has bad spots in it. Replacing my motor and plastic gear thursday.
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Old May 28, 2014, 02:46 PM
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Tucson, Az
Joined Feb 2007
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I started to fly two years ago 9958's V911's very good/ still have them. Little later V929's WL Toys quads. Worked fine still have them. Fast foward WL toys dominate clone heli/quads etc. Recently bought V262 big quad. Issues QC motors are bad news/ pinion gears are extremely soft and wear out in no time.
WL Toys has lower the standard and motors are not very good.
Yes birds fly, just order extra motors, cause your going to need them. Recent review of six motor multi rotor V323 motor failed . Brand new , they sent him a DUD !!
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