Check your compensation pick up the heli and tip it left or right.. The swash should move in the opposite direction.. Ie you tip the heli forward the swash should tilt backwards... If it moves forward you need to reverse it

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Sure.... OK firstly you need to do off bench testing to ensure your gyro has its orientations right as @Manyc suggested. I will just expand a bit on his answer just incase you are relatively new.

Remove your blades (just incase)... Then without spooling the helicopter connect the power so everything is powered up (with exception to the motor of course).

Now tilt the helicopter forward. The swash should attempt to remain LEVEL. Tilt the helicopter backward. Again the swash swash should attempt to remain level. This is a very basic check to test the gyro orientation.

Now do the input check. Put the heli on the bench with the tail facing toward you. Push your control stick to the left. The swash plate should lean to the left. Push your constrol stick forward. Your swash should go forward - do this for all directions.

If you have done the above and it all checks out fine but the helicopter still tips on takeoff - you should probably check your helicotper bad vibes. Are your blades good quality and balanced. Are there minimal vibrations at max RPM?

The first part is easy to test for. Vibrations on the other hand are not allways so simple.

 

Yes first check the electronics as mentioned above then look for mechanical issues if everything is ok.

 

Thank you so much that was very nice of you to respond to my question . just one more thing. How wold I set this
Up on my transmitter ? You know the knob for gyro gain and when I turn it am I giving it more avac or heading hold? Am I saying that right ?
But thanks anyway .
.
Paulie

 

You will (should) have 5 channels occupied for the basic flight controls. The 6th channel can be assigned to tail gain, or bank switching, depending on your needs. As long as K-Bar is set to HH mode, it should stay there, then you can set a range of control on a pot or slider to vary the gain. Further manipulation of the parameters in your Tx can further restrict the range of gain you want by limiting the value of the pot or slider you are using. It can sound a bit complicated at first, but its not so bad once you get the hang of it. (Ask me how I know that...)

 

Either Vstabi PC or Android versions are good for setup of K-Bar. The PC version has a few more settings available than the Android version. Whatever you do, avoid the "iCard" programmer..... the yellow thing that sometimes comes with a K-Bar as a package deal. It is limited in function and has been known to disrupt an otherwise good setup. I quit using mine..... it is now Lipo meter only.

 

To make those corrections you would need the software as mentioned above.. The only thing you could change from your radio would be the tail main gain... And that would not be the cause of your tip over..

I have never used a kbar so I can't really guide you on it

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@Beaver has used kbar quite a bit. @Beaver have you experienced the tipover with kbar?

 

Yes. In my case, I had overlooked the orientation setting for sensor position, and still managed to get the rest of the setup done. I went straight for the servos instead of running the steps in order. It tipped as soon as it was spooled up enough, but because I still had cyclic control, was able to wrestle it back to center while grabbing for throttle switch. Still trashed some cheap blades. Boy did I feel like a clone.... er, uh clown. Needless to say, my preflight habits changed.

 

Wow you guys are amazing and smart as a whip. Thank you so much .You know what else I heard that sometimes the kbar gyro when it's spooled up enough that it had to compensate for the torque because it thinks it's in the air thats why she's tipping over. I also bought a placemat rug to put the helicopters on to help dampen the vibrations because another thing is I have wooden floors..............?

 

As long as things are mechanically balanced and there isn't any excess vibration, headspeed shouldn't be an issue. K-Bar is moderately vibration tolerant.

 

Oh man!!! I have tears in my eyes from laughing so hard!!!! lol...

 

Hey does anyone know what swashplate settings are for the 380 Goblin clone what is it h3 or hn3 I tried using h1 nope anyway I am stumped lol. Well happy Sunday I hope everyone is Chillaxin. I just put together
This thing it's actually pretty decent for a clone no slop or loseness everything is pretty snug I wish you guys would buy one but I don't know how you feel about clones it's my second clone I also have an HK 450 TT