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  • I tried the Flymentor on a Blade CP Pro 2. It is junk. I could not get it to "stabilize" the heli at all. Most of the time it just interfered with flying. It was much more stable with the system off. The camera did nothing at all as far as I could tell. Could be I just didn't have it set up correctly. I still have the FM. I'll sell it to you if you want to try it yourself.
  • Hi all, I thinking of bying one Flymentor for to adapt it to my Quadrocopter.
    Has anyone tested how high in Meters the Flymentor works ?
  • Ah the Gaui-365, this is a blast from the past. I went looking for the one I sold cheap on eBay but it was so long ago eBay doesn't have the item any more. All I can find is the thread where I bought one:

    Sure, it will work on a plane but there are much cheaper and easier solutions.

    See this thread, posts 85 and 90 from 2008:

    I do not recommend the Gaui-365 on a heli unless you are on a really tight budget, even then it is best to just stick to a flybar. The Gaui has a number of problems related to vibration (the manual recommends sticking coins to the unit, seriously!) and lacks the ability of dynamic tuning which is the biggest plus of flybarless system in my opinion.

    Back to your actually question: Gyros with planes, done loads of that and had full axis stabilisation on my old turbine f-18. There is one thing to watch but most people overlook: As speed increases the control surfaces become more effective, hence you need to lower the gain of the gyros the faster the aircraft flies.

    To do this, I used a board that I designed with an AVR and a pitot airspeed sensor. It was more complex than this but basically as airspeed increased, gain was reduced, I used gy401s x 3 in rate mode as they are excellent and have remote gain which I needed.

    You could maybe do the same with mixing gain to gyro control channels, roll and pitch normally require a different gains, I used a lookup tables on the AVR and extrapolated between points that I had tested against speed. I gave away a quite few of these boards and around 10 are flying in large scale models and a couple more in basic home made rudder only UAVs.
  • Hi Morli !
    I also understand that you are nowadays loving UDB very much.
    In channai there is one person called Mr. Sai - 09380577074, you can get Multiplex Easystar from him in Rs. 8500, delivered to your doorstep. All the default gains of latest firmware are primarly for Multiplex Easystar.

    One of my friend got this plane from him few days back. It is really very strong and bears lots of crash landings. - the truth is out there
  • Admin
    Hi Rana ,
    The first one and second one are same or from same company KDS, Thanks for the offer , I will take it up once I am ready to move to helli again soon. Right now , UDB is love of my life :))) and I am concentrating on it get some more serious things( like telemetry etc) completed. CCD function is interesting , I was thinking/dreaming if this method of stabilization could be used for taking snap shot( during practice run/manual mode) of runway approach path as in VFR ( except that AP will decide instead of real pilot) but I guess it will add up lot of video processing on board( can be moved to GCS probably) for now
  • KDS FlyMentor 3D Mounting:
  • Developer
    I want one !
  • Hey Morli, Here is another site selling the same thing in 125$ only but reviews are not that much sound.

    KDS Flymentor 3D Flight Attitude Stabilisation and Positioning System

    New type of sensing process provides reliable geographical positioning, completely independent of the visible horizon.

    Particular CCD sensor can catch the ground picture to compare, and prevent helicopter from drifting.
    Adjust the working status of Flymentor by AUX Channel, switchable gain system offers three different positions: Off, stabilisation and Position-holding mode.
    Head lock gyro outside setting and Swashplate mixer.
    Control the sensitivity and mode of gyro by GEAR Channel.
    Support helicopters with 3S 120°swashplate,or 3S 140°swashplate,or 4S 90°swashplate, or 4S 90°+45°swash plate.
    Attitude stabilisation in inverted flight.
    Set Flymentor by computer USB adapter.
    If you use FM/PPM radio equipment, Flymentor will make the ailerons, elevator and tail servo back immediately. The pitch will remain in the final signal position. And Flymentor will switch to position mode automatically. The sensitivity is 70%.

    Installation Photos:


    Morli, one more thing, that I am golder member of and have done shopping from them worth 2789.95US$, see the screenshot of my a/c with them. They give me 10% discount and if I buy this item from them then I will get it in around 112$

    KDS Flymentor 3D Flight Attitude Stabilisation and Positioning System | GL
    KDS Flymentor 3D Flight Attitude Stabilisation and Positioning System from manufacturer GL, in category Gyros.
  • Morli, the reviews of this product @HobbyKing are even better. It uses CMOS sensor to actually compare the ground photo and restrict drifting. It has and even much more functions like auto recover in 3-D manuevers.

    I have not used it but seems pretty good and reviews are quite positive and price is around 10$ less.

    Flymentor 3D helicopter stabilisation System

    Flymentor 3D is a stabilization unit that helps the helicopter to self-stabilize in hover and also self recovery during 3D manuever.
    This unit comes with 5 items; the main unit, gyro, CCD sensor, CD software and usb data cable (manual is in PDF format in the CD).

    Control all movement, including attitude stabilization, speed control, position locking.
    CCO sensor to capture picture of ground, comparing pictures to avoid drifting.
    Switch working mode (horizontal mode and position mode) through AUX channel.
    Integrating head locking gyro and swash plate mixer.
    Control sensitivity and mode of internal gyro through GEAR channel.
    Support swash plate 3S 120°, 3S 140°, 4S 90°, 4S 90°+45°
    Keep balance in inverted flight.

    Configured by computer through USB.
    If you are using FM/PPM remote control device, when helicopter is out of control, the Flymentor 30 will set aileron, elevator, rudder to neutral, and keep pitch in the final signal position, and switch to positioning mode automatically, the sensitivity is 70%.

    Voltage: 4.8-6.0V
    Current: 55mA (under 5V)
    Temperature: OC~ +40C
    Under the stabilisation mode and positioning mode, maximum rotate speed allowed: J Aileron and Elevator: ,;2000 / s
    J Tail turning (if using external gyro): ,;3600 / s
  • What they mean is you can fly 3D while using this product. If I flip inverted and let go of the sticks it's going to do whatever it's going to do without me touching the sticks. Meaning if it's slightly tilted and falling to the right it's going to keep doing that and the gyro won't stop it. Their term stabilizing is different than ours. In the past with a gyro they had drift (well cheap little Chinese Walkera Heli still do). They also did not compensate for torque as you added and removed throttle. The Tx would have (and most still do) a way to feed rudder as you increase throttle to compensate. Well, newer units like this one will simply correct. As it detects movement it will counter it. So in a sense it does "stabilize". But also if you give it rudder the tail will spin and if you let go of the rudder stick it may stop spinning but still slowly drift. It's basically a 3 axis gyro with some mixing to allow it to control a flybarless head. I'm not putting it down as that's pretty cool for RC Heli Guys like me but it's for sure not doing what we usually call stabilization. HeliCommand is a stabilizing system. Did that answer your question? -David
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