Low HS elevator bounce

[Varelco]

I was experimenting with lower headspeeds on my Goblin 500 today, but when I drop the headspeed I get a oscillation on the elevator axis. It will only happen when I give an elevator input so I can rule out the typical head wobble caused by the dampening. If I give a bigger elevator input the oscillation is more aggressive and takes longer to eliminate itself, any stronger and I reckon it will lose control.

Im unsure what to adjust to get rid of it. Ive only adjusted the elevator debounce which is set to 160%.

[Jez N]

160 elevator denounce sounds high. If you put it up too high you get an elevator wobble like overgain. I would reduce the value right down and start again and see what happens. Had a similar problem on my warp

[Nick B]

190 on my logo 600 if that helps...

[Varelco]

160 elevator denounce sounds high. If you put it up too high you get an elevator wobble like overgain. I would reduce the value right down and start again and see what happens. Had a similar problem on my warp

I agree that it's reacting from too much gain but if I lower it then the wobble then becomes apparent on elevator inputs at my higher normal running headspeed. It's a bit of a catch 22, Its like I need the elevator debounce assigned to different flight modes like some other conditions.

How did you resolve your issue jez, was it only adjusting the debounce setting?

Cheers Nick, I'm reluctant to go any higher as I fear it will go out of control and become unflyable.

[JoeBailey]

Low HS elevator bounce

Hasn't the vortex got bank switching for that very thing? To run two separate lots of settings on the same unit?

[Nick B]

I think elev debounce is a global setting,Joe,as in one setting does all and not a flight mode feature.

I have been to 200 but was trying to get rid of the natural one bounce you get from the dampers,like the vbar would.

The harder the dampening with metal grips the lower the figure would be....logo dampers and plastic grips result in a high figures.

You are trying to get just one bounce only.

[JoeBailey]

Low HS elevator bounce

Just trying to figure exactly what the vortex can do nick, I've got one for my next model and I'm a bit apprehensive at the mo. there seems to be a few issues with this bouncing and it's not something I'm used to with my vbars. I just hope it works out great.

[Nick B]

Its one I could not get my head around,maybe Angelos could explain when he see's this.

[JoeBailey]

Low HS elevator bounce

It is a bit puzzling you'd have thought anything to do with gain of any kind would have been flight mode adjustable to account for the variation in head speed.

I'm sure we'll get an answer at some point. Who knows it may even trigger a software update.

Joe

[Jez N]

I initally ran about 115 elevator debounce on the warp but was having some tail authority issues which i sorted with a bit of pre-comp. This then resulted in quite a marked elevator bounce on hard maneuvers which i thought would be sorted with increasing the elevator debounce. But since things became worse i deduced that the debounce must work like a gain and that when it is too low you get slow oscillations and when too high the rapid oscillations as you do on the tail. It simply resolved by reducing the ele debounce to 110. Since the warp is a rigid head design with no dampers, that may explain the low value compared to others? Sorry i cant help anymore, but dont give up on the vortex just yet. It is a lovely FBL unit

[Varelco]

I'm not giving up on the vortex at all. I love it, it flys perfectly when I have it in my normal set up. It's only when I was experimenting with low headspeed did this wobble occur, and we are talking of a good 300-400rpm drop in HS.

I will start off lowering the elevator debounce as it is pretty high, if the wobble goes away at low headspeed and appears at the higher headspeed I will adjust the cyclic gain see what that does. The datapod is so handy for situations like this.

[Steven Gerrard]

If you use a lower head speed increase the rotor gain for that flight mode.
i fly with 2200 head speed and at my lower headspeed of 1950 i have uped the gain 10%
slower head speed needs higher gain for the tail also

Steven Gerrard