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08-31-2012 03:59 AM  5 years agoPost 1
Stephen Born

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USA

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Flew yesterday with loaded heli. Taking off was good in Rigid. Around 30 feet I switched to Horizon and heli drifted backwards. Had to give foward elevator just to keep stable. Went back to Rigid and was fine. No trim was used on Tx.

My Horizon gain #1 is set at 49%. Swash is perfectly level.

Is this a Horizon gain issue?

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08-31-2012 01:21 PM  5 years agoPost 2
F1 Rocket

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Melbourne, Florida USA

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It may be that the internal horizon was off a bit. If you fly level for a short time the horizon should correct itself.

Danny - DemonAero Support Team

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08-31-2012 02:04 PM  5 years agoPost 3
Stephen Born

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USA

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Thanks for the reply Danny. I had the heli in a hover for roughly 4 minutes in Horion before moving back to Rigid.

The movement was not significant, but drifting.

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08-31-2012 04:50 PM  5 years agoPost 4
Dappe Bronco

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Belgium

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My HC3-Sx on my Predator drifted very slightly to the rear when in horizon mode and in "normal" mode. What helped (I believe it is also mentioned in the manual somewhere) was to shorten the link to the swash in the opposite direction whithout touching trim. Heli has been flying correct ever since...

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08-31-2012 05:02 PM  5 years agoPost 5
Stephen Born

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USA

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My HC3-Sx on my Predator drifted very slightly to the rear when in horizon mode and in "normal" mode. What helped (I believe it is also mentioned in the manual somewhere) was to shorten the link to the swash in the opposite direction whit out touching trim.
The swash is level on the bench. Manipulating the linkage will deviate the leveling. It is worth a shot though. Thanks.

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08-31-2012 08:35 PM  5 years agoPost 6
GetToDaChopper

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Las Vegas , NV

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Manipulating the linkage will deviate the leveling
Yes, that's what you need to do as all helis need some tilt of the swash to hover in one place, some more than others.......

a level swash is just a good starting place......

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08-31-2012 09:36 PM  5 years agoPost 7
Stephen Born

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USA

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Thanks Steve. I'm on it.

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08-31-2012 11:53 PM  5 years agoPost 8
GetToDaChopper

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Las Vegas , NV

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Man you should have seen my heli today with the vegas winds kicking up and gusting as i flew it between two long rows of hangers, it's was like some kind of crazy wind tunnel and i was flying with 100% self-leveling on the hole two flights, man this HC3-SX is amazing ! it was fighting that wind tunnel like some sort of pro pilot !!! is was really something to watch it ride the rapids !!! now that's what i call FUN !!!

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09-01-2012 10:07 AM  5 years agoPost 9
TomC

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Gold Coast, Queensland, Australia

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At 100% horiz, aren't you fighting the heli to keep it on line?

Cheers,
TomC

Nqx,Mcpx-BL,300x,450x,500x,550x
Ion-x, 10s ,SS
TT X50E 10s, HC3-Sx

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09-02-2012 12:19 AM  5 years agoPost 10
GetToDaChopper

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Las Vegas , NV

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not really, i have the manual prioirty set pretty wide and the stick response fairly slow, that along with the natural maneuverability of a 450 heli set with hard 3D cyclic and collective pitch rates works very well for me, if i tilt the stick say 45 degrees and hold it there the heli will tilt 45 degrees and hold there for as long as i keep the stick there, so say i tilt the stick forwards 45 degrees and stop the heli will do the same and then it's just a matter of how much collective pitch to get it to keep it "X" amount of feet above the ground and it will haul a$$ forwards like it's on a rail and so on, to me this setup feels very natural and intuitive, but this all hings on a self-leveling system which is consistent and repeatable in which the HC3-SX most definitely is, when flying in that (as i call it) crazy wind tunnel very little input is required from me to keep it in one place, the biggest thing i have to do is collective management because of the ballooning effect of hard gusts of wind have on a smaller heli like a 450 size, the thing that amazes me is that i can fly tail into the wind tunnel or side into it and it handel's it just the same as it would nose into the wind, i just find that very impressive, one of these days i'll have to find someone to video tape this wild ride and post it.......

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09-11-2012 11:35 AM  5 years agoPost 11
jnfarin

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ITALY

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drifting backwards

Hi

I've the same problem with mine installed on a X7 to use for AP-video!

When I swich on HOR-mode it drift backwards!

Thanks a lot!

by,

Diego

VARIO Benzin Acrobatic + Airfoil PRO1 + DJI XP3.1

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09-11-2012 01:28 PM  5 years agoPost 12
Stephen Born

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USA

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jnfarin,

Hope the information in the thread helped.

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09-11-2012 02:54 PM  5 years agoPost 13
jnfarin

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ITALY

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I guy,
excuse me but what I've to do is:

"to fly level for a short time so the horizon should correct itself"

or

"what helped (I believe it is also mentioned in the manual somewhere) was to shorten the link to the swash in the opposite direction whithout touching trim"

?

Thanks a lot!

Diego

VARIO Benzin Acrobatic + Airfoil PRO1 + DJI XP3.1

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09-11-2012 03:55 PM  5 years agoPost 14
GetToDaChopper

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Las Vegas , NV

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"what helped (I believe it is also mentioned in the manual somewhere) was to shorten the link to the swash in the opposite direction whithout touching trim"
this is correct and the way forwards...
"to fly level for a short time so the horizon should correct itself"
it seems to me that there's a limit to how much it can correct itself and that you have to get it in that range (in the ballpark) first, then it can work within that range, oh and if you make changes to the swash links and go to test the results make sure you give it enough time hovering to correct itself to the new swash link settings, don't just hop off the ground and think "gee this ait right" and set it right back down, hold it in a steady hover with stick corrections for a bit and then let the cyclic stick go back to center, do this a few time to make sure where your at and only then make correction to the swash links and repeat.....

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09-24-2012 05:07 PM  5 years agoPost 15
JDBfor3

rrApprentice

Grand Rapids, MI, United States

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Drifting is a big problem for me too. I got my hc3sx working to fly in normal mode but when I switch into green light or green flashing the swashplate tilts way forward and the higher I turn the gain the more it tilts and it won't go back. It worked at first in horizon mode but the first time I tried the rescue button it flipped and climbed and then drifted so bad I could barely get it back. Now on the bench the swash just tilts almost all the way forward whenever horizon is activated and I can't fly it in horizon at all. I'm Using a DX8 radio.

Name........Jason

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09-24-2012 08:29 PM  5 years agoPost 16
TomC

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Gold Coast, Queensland, Australia

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The only time I get this drifting/tilting problem in horiz rescue mode is if I have carried the heli to the flightline and had to wait a while to spool up. I usually can notice that this is a problem when I take off in rigid-only mode and when I test the rescue and see that it tilts badly, I just land and restart everything. After that, all is fine.

So, maybe try waiting till you get to your flightline befor initiating the hc3sx system and see if this helps. If not, you may have a faulty unit and should contact your HC dealer.

Cheers,
TomC

Nqx,Mcpx-BL,300x,450x,500x,550x
Ion-x, 10s ,SS
TT X50E 10s, HC3-Sx

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