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Old 11-14-2011, 03:48 PM   #1
NCcraig
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Question Do I need center stick or always bail out?????

I have come to a point with my SK720 set up that asks for "always" or "center stick" bail out option. I'm not a newbie but I'm liking the bail out option and asking an opionion one way or the other. I can fly O.K. but don't want her flying like a CX3. What do you guys suggest?
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Old 11-14-2011, 03:55 PM   #2
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=] CS+inv is needed here!! gives both sides.
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Old 11-14-2011, 04:15 PM   #3
Skookum
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Default Self Level Settings

Craig - "Always On" will make your heli feel like a CX3, Centre Stick will let you fly as normal until you let go of the cyclic stick.

Another option is to set one bank with self level off and one to Always On - fly using the "off" bank, and switch to the "Always On" bank when you need the bailout.
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Old 11-14-2011, 06:28 PM   #4
nard712136
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Mine is set to one bank with self level off and one to Always On (bailout), but not tested yet in inverted.


Anyone tried flipping the bailout switch (always on) while heli is in flat inverted?
What happens to the heli? does it goes to right side up?

Thanks..
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Old 11-14-2011, 08:11 PM   #5
desertstalker
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Quote:
Originally Posted by nard712136 View Post
Mine is set to one bank with self level off and one to Always On (bailout), but not tested yet in inverted.


Anyone tried flipping the bailout switch (always on) while heli is in flat inverted?
What happens to the heli? does it goes to right side up?

Thanks..
If its not set to inverted SL it will flip itself upright again, so be quick on the collective
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Old 11-15-2011, 05:29 AM   #6
NCcraig
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Quote:
Originally Posted by Skookum View Post
Craig - "Always On" will make your heli feel like a CX3, Centre Stick will let you fly as normal until you let go of the cyclic stick.

Another option is to set one bank with self level off and one to Always On - fly using the "off" bank, and switch to the "Always On" bank when you need the bailout.

I think I will go with the second option of having the "Always on" when I flip the switch. I'll give that a go and work on it from there.

Thanks!
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Old 11-15-2011, 10:22 AM   #7
schnellschnell
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I really need to read these forums more often. Didn't know that was an option - center stick. Nice.

Flying the other day I found it awkward when doing large circles that it would sometimes (when I wasn't pushing cyclic forward, but there was aileron and rudder input) that it would suddenly level it on the elevator. Is this the same thing? Does it auto level each input if they aren't being used individually? That description doesn't seem very clear - I hope you get my drift.

Jason
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Old 11-15-2011, 01:35 PM   #8
georgi UK
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=] let me post up some SL bailout documentation,

If you use the SK720’s self-leveling / bailout option, there are a few things to
be aware of:
• Self-leveling works better on helicopters with low vibration levels.
Tune your helicopter to eliminate high vibration and mount your
SK720 as shown in Section 8 of this manual.
• Watch for vibration warnings where the LED is green but flickers
red. Self-leveling will be automatically turned off whenever the
SK720 displays this LED warning.
• The maximum speed of recovery to level will only be as high as the
maximum control rate for cyclic.
• The self-leveling system is not an auto-hover feature. It doesn’t
know about wind or location so the helicopter will still drift if left
on its own.
• The self-leveling feature will work from any orientation including
upside down. The SK720 will not automatically adjust the
collective, however. You will need to manually adjust the collective
during a recovery and the helicopter may loose significant altitude
in the process.
• If you fly extended periods of 3D stunts, the unit’s sense of “which
way is up” may not be perfect. It may help to reduce the use of high
collective pitch due to the high vibration it causes (i.e. if you hear
the blades barking). Be prepared to switch back to normal mode
after the helicopter has mostly recovered.
• If you manually fly the helicopter in one of the two “Always On”
self-leveling modes, it will feel like you are flying a coaxial
helicopter. You will have to continuously hold elevator and aileron
controls to overcome the SK720’s desire to self-level the helicopter.
Flipping the helicopter upside down may be difficult or impossible,
depending on how strong the self-leveling setting is.
• If you manually fly the helicopter in one of the two “Always On”
self-leveling modes, avoid high yaw rates (piros) combined with
large aileron or elevator control inputs. Doing so may tumble the
helicopter due to interaction between pilot control and self-leveling -
but if you center the sticks it will recover.

The SK720's self-levelling feature is enabled by choosing a self-levelling
mode on the setup software’s Cyclic tabs and then moving the adjacent slider
to set the self-levelling percentage. (see Figure 15.1, below). This value sets
how strongly the helicopter tends to pull itself towards level in elevator and
aileron. A higher self-levelling percentage will make your helicopter return
to level quicker when the controls are released.
Figure 15.1 – SK720 Setup Software Cyclic Tabs (Basic User Interface setting)
The Centre Stick self-levelling mode illustrated in Figure 15.1 above is the
recommended self-levelling mode for new users of the SK720. The
helicopter will fly normally with self-levelling set this way but it will
automatically return to level when the cyclic stick is released.
The Always On self-levelling mode is the original SK720 self-levelling
mode. The helicopter will always try to level itself in this mode, making it
feel like a coaxial helicopter. This mode will also make some aerobatics
impossible (i.e. stunts involving inverted flight) because the helicopter will
“fight” the pilot's control inputs more strongly the further the helicopter is
from level.

In the CS+Inverted self-levelling mode, the helicopter will level itself to
inverted if the cyclic is centred when the helicopter is within 60 of inverted.
Your helicopter will return to upright and level if the cyclic is centred while
the helicopter is within 120 of right-side-up.
The On+Inverted mode will level the helicopter to inverted when within 60
of upside-down. Unlike the CS+Inverted mode, the On+Inverted mode will
not switch off when you move the cyclic stick.
CAUTION: Do not use inverted self-levelling unless you
already have some experience with inverted hovering. Also, The
On+Inverted mode will make your helicopter seem to “stick”
upside-down. You will have to switch to another cyclic bank to
recover.

Using Self-Levelling as a Bailout Mode:
If you want to use the SK720's self-levelling feature as a “bail out” mode,
choose the Centre Stick mode together with a high percentage of
self-levelling (i.e. 80%). The helicopter will fly normally with self-leveling
set this way but it will automatically return to level when the cyclic stick is
released.
You can also use the Always On self-levelling mode for bail-out. To do this,
set up one Cyclic tab as your primary tab and set up the second cyclic tab as
your bailout mode. You will then be able to switch between active Cyclic
banks to enable/disable self-levelling.
If you use this method, it is best to copy all of your settings from your
primary Cyclic tab to your bail-out Cyclic tab if you intend to set up a bailout
mode. Do this by right-clicking the mouse on your primary cyclic tab to
bring up a popup menu. Choose Copy Cyclic 1 to Cyclic 2 as shown in
Figure 15.2 below.
Figure 15.2 – SK720 Setup Software Cyclic Tabs with Popup Menu
CAUTION: Ensure that your trims are set the same in both gain
banks on your transmitter if one bank is to be used as a bailout
mode.
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