Trex450 & BeastX Tips over on landing?

[LordExcalibur]

I have an Align Trex450 Pro with DFC & BeastX, It takes off and flys OK but every time I land it tips over to the left.

I tried using throttle hold when it just off the ground and let it drop last few inches, still the same.

I made sure I dont add an inputs as its lands and still the same.

I read about this happening on take off, but not landing, anyone had this and found a solution?

Many thanks.

[cjcj1949]

I like the canopy. Perhaps it would work better without the flybar? (Humour)

I thought there was a discussion about using inputs and there wasn't a problem. Should be much the same as with a gyro.

[MarkG_R1]

Trex450 & BeastX Tips over on landing?

What are you using to fix the beastx?
The supplied pads or something more suitable?

Never had any tipping issues with mine with maplin double sided tape

[Gixxer]

Have you tried giving it full negative collective when it lands?

[LordExcalibur]

Yes must get around to changing that Picture, that ones long gone.

Just using the pad that came with the Beastx, Are they no good then?

I have about 5 deg negative in TH and normal mode, which I have tried landing in both. Is that not enough then?

[Gixxer]

I've experienced a few instances of FBL systems wanting to kill my heli, so as soon as I touch down, I drop the collective to the bottom, so the heli is effectively pushing itself into the ground and can't fall over.

[Spanner]

I found by doing what Gixxer does is what caused my N5 to fall over! I now land and keep the blades at 0' until they have run down, no dramas since

[sp4rky-m4rky]

Never had a problem with mine, it sometimes like to do its magic balancing trick on take off, where it balances on the tip of one skid, you just level it with cyclic though. On landings as long as you come in level it just sticks to the ground.

[maddog7]

Wild shot in the dark,
Is the piro optmisation correct? I don't even know if it has anything to do with the issue, it's just the only parameter I could think of that might cause something weird to happen?
I have 3 beastx and so far no issues with landing, I do the same as the others have mentioned and progressively but briskly bottom the collective as soon as it hits the deck.
Hope this helps.
D

[rudi]

Can you clarify what part of landing causes the tip left? Is it the skids contacting the ground, or is it only when you spool down?

[cjcj1949]

You can still make it fall over with full negative collective. Perhaps the landing is so hard that the heli gets upset. Bad joke sorry. It could be that the mounting tape allows the slight shock from landing to screw up the gyros. Lots of people have changed the tape to Maplins or held the BeastX down with a tie wrap. I'd like to know if there is a problem on controlling flybarless units just before takeoff or after landing as I do that all the time and will find it hard to change when I go flybarless.

As previous post, I'm assuming it's skids touching the ground, could you confirm.

[LordExcalibur]

Many thanks for the replies.

It does seem to be just after the skids touch the ground (grass) as I reduce the throttle to zero and pitch to -5, it then just leans violently to the left. The landing is controlled and gentle onto reasoanble flat grass.

I havent noticed any other probelsm with this, it takes off and flies ok, just the landing and it does it every time as well.

I will recheck the complete setup, but I am sure its setup as per the manual and I havent actually changed any setting yet.

I will also try changing the mounting tape, How many layers of the Maplin tape should I be using?
Can you confirm its this tape Double Sided Foam Tape : Tapes : Maplin Electronics

Regards

[cjcj1949]

You might be able to get the same effect by just moving the heli, in the same way you check out the swash is moving correctly. The right hand skid will hit the ground first. A metal plate under the BeastX should reduce the shock. Theory doesn't always work though when things are complicated. You might find that making the left hand skid longer would help. Some helis do this to get rid of the move left on take off problem. Doesn't look good though. Do you get main blades broken when the heli leans left or does it correct itself.

[tourerjim]

When you went through the setup did you use swash leveling tool, could be your getting some sort of interaction on one of then servo's

[jago]

Hi for example if you had +10/-10 degrees of pitch and went up full stick then stopped it hard then followed by full negative it would tip left on the negative. Ok this is not safe so don't try it, it is caused by a high frequency vibration so try setting +10/-10 in idle up take your blades and tail blades off model, strap it down to a bench then idle up and move pitch stick up and down and watch the swash it will lean left on the negative movement if you have a vibes issue. To fix this change the tape out to maplin or 3m thin tape. Hope this helps :-)