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Gaza07:
22 Aug 2019 22:47:32
Sorted mate  ~~
Andy7:
22 Aug 2019 10:27:36
Sure. But basically, all the subjects are getting cut off.
Gaza07:
21 Aug 2019 18:14:54
Can you pm me a screen shot of what you mean
Andy7:
21 Aug 2019 12:15:41
Gaza - can you make the subject line section in the forum topic list wider? It's cutting off the subject field really short.
Andy7:
19 Aug 2019 09:14:20
Good for you!  ~~
DarkButterfly:
18 Aug 2019 19:13:57
Had another negative encounter, it's been a few years since the last one, just an uneducated ******, going on about drones being illegal yada yada yada.    :-/
Still that didn't spoil my flying time, had an absolute blast  ~~
Gaza07:
07 Aug 2019 19:52:01
ooooh mrs jones  :D
hoverfly:
30 Jul 2019 15:26:34
D.B. you tightwad.. :cool:
atomiclama:
29 Jul 2019 20:14:10
DB that just means you have shed loads of props in the first place ;-)
DarkButterfly:
29 Jul 2019 18:53:33
Just had a thought, even with all the crashing I've done, I haven't bought any replacement props in over a year ~~
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3d - Printworx

Printing 3d Forum

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Started by billmac, Friday,September 27, 2013, 07:36:49

Previous topic - Next topic

billmac

Hi
I have a question about gains on my Hex (Tarot YF680) I spent quite some time setting the gains and I have got it pretty good except when coming down. Unless I descend very slowly and I mean slowly it starts to oscillate I think that would be the right term. I have tried different settings but seems to make no difference. Is this the norm when descending or can I do something to make descending smoother. It's not bad when I am in forward flight it's only when I am holding position.
Thanks.

flybywire

Hi billmac
Oscillations on descent can be caused by the esc';s.  Have you tried flashing them with the simonk firmware?
Blog: http://ajwillis303.wix.com/stuff
The spiritual home of fpv large
Keep it emax, capiche?
Hardware? sure, I got hardware!

billmac

Hi flybywire
no am using the DJI 30A Opto Would you recommend different type ESC

flybywire

I guess it depends on how much it bugs you.  My quad oscillates a little on descent too, but to be honest it';s not that bad, so I put up with it (the gimbal helps as well of course).  I';m currently building a hex, and I';ve ordered the ';new'; Afro esc';s from HK, they come pre-flashed with simonk.  I think others on the forum are using them, so maybe somebody could give us a heads up?  They are pretty neat really, as you can buy the little USB flashing tool specially designed for them, which uses the servo lead to update firmwares instead of having to cut the heat shrink and attach the ';tool'; to the chip.  ~~

Andy
Blog: http://ajwillis303.wix.com/stuff
The spiritual home of fpv large
Keep it emax, capiche?
Hardware? sure, I got hardware!

billmac

I could live with it but it's a bit of a pain with all the comments I get from my flying buddies  :smiley:
I have never flashed esc's so will have to look into that
Thanks flybywire

SimonS

The occiliation is caused by the Hexa descending into the turbulence caused by the downdraft from the props.  Keep some forward speed on, fly round in circles if necessary and the comments will stop.

turkuss

Just in case anyone is interested it';s called vortex ring .caused by descending into downward moving Colloum of air...
I'd rather have a full bottle in front of me than a full frontal labotamy

nickyb

Does sound a bit like you need a dose of SimonK firmware.

RC legends do a nice one, pretty cheap:

http://www.rclegends.co.uk/parts/speed-controllers/dys-simonk-firmware/dys-30amp-esc.html

Good luck

Nick

barneyg

SimonK firmware does the same thing :)

flybywire

I think it';s fair to say that a quad with a half decent controller should be able to descend at a reasonable pace without wobbling like hell.  Propwash is of course a consideration here, but if it does it at a very steady descent, then all the evidence is that simonk flashed ESC';s can be effective in reducing the wobble, certainly worth a try?  If smooth descents are important to you that is!  :smiley:

Andy
Blog: http://ajwillis303.wix.com/stuff
The spiritual home of fpv large
Keep it emax, capiche?
Hardware? sure, I got hardware!

billmac

Ill post a video clip to let you see what you think if it ever up loads to youtube only 2Hr to go

flybywire

THat';ll be helpful.  What controller you using?

Andy
Blog: http://ajwillis303.wix.com/stuff
The spiritual home of fpv large
Keep it emax, capiche?
Hardware? sure, I got hardware!

billmac

Friday,September 27, 2013, 17:41:04 #12 Last Edit: Saturday,September 28, 2013, 14:53:56 by billmac

HowDoIfly

You need to change the vid from private to public, please  :smiley:
Ifly4 no more, Hubsan X4, R550v2, X650F-V4

JerryCampbell

If mine wobbles on decent. I increase the Rate I setting a little at a time until it';s gone.
I don';t have a Naza but I would think the principle is the same.
Jerry

SimonS

Two things to point out.

1. It is not Vortex ring. See http://en.wikipedia.org/wiki/Vortex_ring_state for the correct explanition of ortex ring.
2. With a Naza the amount of wobble is proportional to the rate of descent regardless of the type of ESC firmware.  SimonK will do it just as much as other firmware.

If you must descend straight down then do it slowly otherwise move laterally during the descent.

nub

i get bad wobbles on my quad when descending with a naza and flashed DJI ESC';s, i mean bad wobbles, its horrible better off taking a dive.

my nanowii is smooth as silk though, its like night and day.
Point and click.

Monkey see, Monkey do.

billmac

Ok video should be working doesn't look as bad as it actually is.

billmac

PS
Thanks guys for all your replies.