Classic or extended ?

[markjj]

Almost ready for the maiden flight, just waiting on packs. Hopefully got it set up right, swash moves in all the right directions with the sticks and trys to keep level when you move the heli. So far it's been pretty much plain sailing- but it ain't left the ground yet!

But whats the difference between the classic and extended settings, cant' seem to find any info on what changes it makes. The only difference I can tell is the elev servo rises slightly in extended, so whats the general feeling on this and who's flying what?

[jaron]

The "Extended" mode compensates the rear up tendency in fast forward flights.

The manual says, that you must use "VBar classic" for setup purpose and the first flights. If your helis has got the tendency to rear up, you can switch to the extended mode.

The direct translation from the German word "Aufbäumen" is "to rear up". But in fact in this case it is a nose up - please correct me if I'm wrong.

[www.vstabi.de]

Yes, you are right.

The Parameters for the extended mode are set non-visuable for you.

At extended mode some pilots remarked it will not as best for hovering.

Therefore you can tweak the params as follows:

Parameter 73 = 1 (Default at Extended is 20)
Parameter 84 = 20...60 (Default at Extended is 25)

For a Logo 600 we use 1 / 60 and for a 7,5 kg Scaler we use 1 / 30.

It depends on Blades Headspeed etc.

They can only be modified by saving/editing the .xml and load it into the stabi manual at the moment.

[Flybar-less]

Do you use the same modified Extended parameters for the Logo 500 73=1, 84=60?

[markjj]

Cheers chaps, that dose make some sort of sense,so this counter acts the so called 'booming' effect form FFF -just got to get this thing airborne and have a play around, I'll leave it in classic mode for now. Packs should be here tomorrow, so here's hoping .

Cheers.

[www.vstabi.de]

Yes, you can use the same params.

If you notice a pitching down effect, lower the parameter 84 value a few points.

[jaron]

Does this apply to systems without an airspeed sensor as well?

[Flybar-less]

Thanks for the info.

[www.vstabi.de]

Does this apply to systems without an airspeed sensor as well?

Yes, P73 andP84 are the Parameters for Extended Mode without Airspeed Sensor.

[Ticidytoc]

I am currently using the default parameters on my current configuration and have not noticed any strange tendencies in 3D. I have however noticed in high wind conditions the heli will pitch up in fast forward flight with winds in the 16-32kph range. Is there anything you can suggest to use for these settings? What values would be a better choice for the L600? Will these values effect 3D flying?

[www.vstabi.de]

I am currently using the default parameters on my current configuration and have not noticed any strange tendencies in 3D. I have however noticed in high wind conditions the heli will pitch up in fast forward flight with winds in the 16-32kph range. Is there anything you can suggest to use for these settings? What values would be a better choice for the L600? Will these values effect 3D flying?


Are you flying Classic or Extended Mode?

[Ticidytoc]

extended mode.

[www.vstabi.de]

Try as suggested before P73 = 1 and P84 = 60.

If you have booming up effect, increase P84 (it will go on until 120), if you have pitching down, decrease.

Try out and report.

[Ticidytoc]

Okay will do, waiting for the next windy day, today its calm and 23°C. ;o)

[Flybar-less]

Mikado 600 3D

I was still getting a little pitching up at 60 in FFF, so I changed parameter 84 to 80. This seems to work well, in a gust it will pitch down a little so it seems to be a good balance.

Parameter 73 at 1, wanted to pitch up in a hover so I changed it to 10 and 20. Hovers better, but since I only know stock setting is 20, I don't really know what is being adjusted. I like P73 set to 10.

[3DME]

What program are you using to edit the xml file? Because nowhere in the Vstabi software do I see a P73 or P84. So I guess I am confused.

Mike

[uragano47812]

What program are you using to edit the xml file? Because nowhere in the Vstabi software do I see a P73 or P84. So I guess I am confused.

Mike

You have to open the xml file directly with explorer not with the vstabi program. You will see the parameters.

[3DME]

Can you edit them from explorer?

[Team-MAYHEM]

Just change the .xml to .txt and make the changes in notepad.

[Team-MAYHEM]

Try as suggested before P73 = 1 and P84 = 60.

If you have booming up effect, increase P84 (it will go on until 120), if you have pitching down, decrease.

Try out and report.

These settings helped out a lot. Thank you!
My 600 would boom up (actually nose up...I think thats the same thing)during FFF no matter what it tried. I have since increased P84 to 120 and it acts like it is on rails now...absolutely no pitching up flying into the wind, or downwind for that matter.

P73 is at 1, but I have no idea what this changes. Could someone fill me in please?

The last issue that I can't seen to fix is this...
In a hover, doing small ptich pumps, the heli will nose up during + and nose down during -. I'd really like to get rid of that. When it's in FFF, applying small pitch changes the heli will "porpoise" like a dolphin swimming. Makes me real uncomfortable flying close to the deck. My question is will P73 fix this or is there a different setting?

[OICU812]

These settings helped out a lot. Thank you!
My 600 would boom up (actually nose up...I think thats the same thing)during FFF no matter what it tried. I have since increased P84 to 120 and it acts like it is on rails now...absolutely no pitching up flying into the wind, or downwind for that matter.

P73 is at 1, but I have no idea what this changes. Could someone fill me in please?

The last issue that I can't seen to fix is this...
In a hover, doing small ptich pumps, the heli will nose up during + and nose down during -. I'd really like to get rid of that. When it's in FFF, applying small pitch changes the heli will "porpoise" like a dolphin swimming. Makes me real uncomfortable flying close to the deck. My question is will P73 fix this or is there a different setting?


Marshall goto your CCPM Menu and make your top elevator value +12 and goto the bottom full negative and then input -12 for your elevator on full negative. On near full to full inputs of collective this controls the elevator to avoid this dolphin tendacy you speak of. If you change this value by large margins on bench you can see what it does on the elevator axis of the swash easily.

On another note the proportional value you are changing is this on Elevator in expert menu you are speaking of that you ran up to 120 or what...? What parameter exactly is P84??

Shawn

[Team-MAYHEM]

Shawn,
It seems that P84 fixes the pitching up tendancies if fast forward flight. If you read back through this post, you'll see what I mean. It looks like P73 fixes these tendencies in a hover, but I'm not sure yet. These values are NOT seen in the vbar program, they are only in the list view when you look at the actual file. They are also only active during extended mode.
I'm also not sure that your method will work. I say this because, my swash is level at full + and -. The heli also flies level in forward flight...it's only during small pitch corrections that I see this porpoising.

[Team-MAYHEM]

Here's the answer I got from the v-stabi forum...


The "Dolphin effect" (c) is because of the missing speed input of the system. Up to a certain level, this is normal behaviour.

In a few Weeks a new Setup Software will be available, there we can reduce this effect to a very low level.

so long ... Uli


...so, I guess for now, I'll have to deal with this. Other than that, I finally have her flying GREAT. Everything about this heli is awesome. More power and agility than ANYTHING at the field!!!
:Bow

[OICU812]

Marshall what I mentioned will eliminate what you are talking about, I had the same thing. I have not manually inputed your values though you speak of either...The idea is that it counter acts this effect by tilting at full and bottom ranges of the collective.

[Flybar-less]

I tried P84=120, it tracks well at moderate speeds, but becomes unpredictable in FFFFF.
Went back to 60. Previously I tried 80 and went back to 60 then too.