[NSRCA-discussion] JR9303 Throttle cut/hold in airplanesoftwarefor e-power

Sun Mar 22 14:22:19 AKDT 2009

When the throttle curve menu is entered you have a 3 point curve.  The
middle needs to be set to zero% and both the L and H points needs to
also be set to zero.

I just set it up.

Go to sw select, I chose the mix switch.

Leave STK at INH otherwise you will be switch from curve POS0 and curve
POS1 at a certain point on the throttle stick. This is probably your
problem.  The built in throttle curve program has the ability to use the
throttle stick as a switch to change curves. This is why you have the
option to set the stick position. LEAVE it at INH or it will cause you
to change from POS0 and POS 1....

Then at the bottom you will see the "IN" and "OUT"

The In is the stick position. The Out is the servo or in your case speed
controller output position.

When setup properly the "IN" will move from 0 to 100 as the throttle
stick moves. But the "OUT" will stay at zero. Then its programmed
properly.

Next is you can look up at the top next to the [thro curve] it will have
either a 0 or a 1 this tells you which curve you are in at the time. So
do two things to make sure its programmed properly. Flip the switch you
choose in my case it was the mix switch. The ) or 1 at the top will
change. Letting you know which curve the radio is following at the time.
Next is with the switch in the properly position for your "kill/thro
hold"  Move the throttle still up and down and make sure the "OUT"
doesn't move....If it doesn't move off zero then its programmed
correctly.

There is one thing that will affect the end point at idle and that is
throttle trim. Even with the mix in place the throttle trim will still
work...and if you move the trim up the motor might turn depending on
your speed controller settings. So be aware of this. To disable the
throttle trim....go into the setup menu....Hold the "ENT" and turn the
radio on. Under Trim step you will find the throttle trim
sensitivity..Ste this to zero % and the throttle trim will be turned
off. In an electric you should not need that trim anyway.

There are ways you make sure its setup with the curve and still have a
throttle trim if you want it but it will require you to program your
speed controller for a fixed low position on the throttle rather than an
auto.  Auto means that when you power up the controller the speed
controller takes the lowest point it sees at the bottom.....If it is
fixed in the program you now adjust your ATV (travel volume) to get the
motor to turn where you want it to.

Another option is to setup the curve at zero and throttle trim at zero
control and use a thro to thro mix to get your perfect idle...again the
controller would have to be in a "Fixed" program option rather than
auto....or you would have your "Kill" switch active when you power the
controller and arm it...and then you flip "kill" switch to the run
position and the thro to thro mix is adjusted to give you the idle you
want.  This is how I have setup radios for guys flying Futaba radios
with all digital trims.

If you make the switch be the same as your kill just the other position
of the switch then it's a no brainer....kill and run positions...Take it
off kill and the motor idles where you want. Put it on kill and the
throttle stick and trim are disabled.

The higher end radios like the 12X have a throttle hold function...you
just turn it on and it drives the throttle to your preset position and
keeps it there no matter what the trim or stick do.  You can create the
same function in the 9303 just not as elegant.

As I said before contact me offlist and I will walk you through it on
the phone. It will take about 2mins'

Troy

From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Ihncheol
Park
Sent: Sunday, March 22, 2009 12:41 PM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] JR9303 Throttle cut/hold in
airplanesoftwarefor e-power

For those that may have interest in the result.  I got the result with
Type 2 listed below.

I used PMix 3 : Throttle to Throttle.  Pos 0 with 0%/0%, Pos 1 with
-100%/-100%.  -200% Offset.

Switch was set for mix switch.  Now I can cut the engine at any
throttle.  With a flip of the mixing switch, motor will not turn at any
throttle.

Somehow, I still can't make the Type 1 to work.  The motor still turn at
low RPM wtih POS1 values set to all 0.  POS0 has been set to curve that
I wanted.

Thanks to all those who replied.

Ihncheol

________________________________

From: Troy Newman <troy at troynewman.net>
To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
Sent: Friday, March 20, 2009 2:09:50 PM
Subject: Re: [NSRCA-discussion] JR9303 Throttle cut/hold in
airplanesoftware for e-power

two ways to do it.

type 1
One go into your throttle curve and seta  switch that will give you a
Curve POS0 and curve POS1 set one of those curves to all Zero values.
just run them all down to zero...this will disable the throttle stick.
You are fooling the throttle into following a new curve...one that
drives the servo to zero throttle and doesn't change as the stick moves
up and down.

type 2
The throttle to throttle mix works...but here is what you are doing in
the logic. Throttle to throttle mix says take the current throttle stick
position and mix a % of throttle to it. So if you had a mix value of -5%
and your throttle stick was at say 35% the mix would take the 35% and
subtract the -5% from it. 

So the output value would be 30% NET.

The way you have it setup now with a 0% at each point you are saying
take the current stick position and add or subtract ZERO from it. So you
are not doing anything.

To make this option work....do this. 

Don't use a curve mix. Use a normal linear mix.
Set the values at -125% or even -150% if they will go that high....I
don't have my 9303 in front of me right now.

This will take the current position of the throttle and subtracts out
all values and the throttle should not move. You may need to mess with
the stick position value as it appears with your everything works below
1/4 throttle statement means you probably changed this from the default.

The stick pos or thro stick function on these mixes allows the mix to
turn on or off or change from one mix value to another at a given
throttle stick position. Its basically setting the inflection point
where the throttle stick activates the mix. If you thro stk value at 1/4
throttle stick then this would make the mix change from POS0 to POS1 at
that throttle stick location. This allows you to play with this type of
mixing in order to customize it even more than a simple on/off. Example
is you can have different mix settings based on your throttle stick
location. If you want 3%up elevator with rudder for knife edge. You can
use the throttle stick position to change it to 8%up elevator when the
throttle is below say 10% and have the same 3% knife edge mix when the
throttle is above 10%

This allows you to have really 2 mixes or rather mix values built into
one mix....Or you can leave one value as ZERO and this will make the mix
turn on or off at that point just like it was a switch.

After all this is said

I prefer the throttle curve method I suggested at first. This is type 1

if you have Q's send me a line and I'll work it out with you. I can get
my 9303 when I get home and walk you through it.

Troy Newman
Team Horizon Hobby / Team JR

________________________________

From: nsrca-discussion-bounces at lists.nsrca.org on behalf of Ihncheol
Park
Sent: Fri 3/20/2009 10:03 AM
To: General pattern discussion
Subject: Re: [NSRCA-discussion] JR9303 Throttle cut/hold in
airplanesoftware for e-power

Stuart,

It is for JR 9303.  The mixing is set for entire range of the throttle
stick to have output of 0 on a flip of mixing switch.  It still turns.
It is the only mix that I use switch.  I try to set all other mixes on
permanently.  
Somepeople suggested using Heli software for it, but I don't really like
it on airplane.

Ihncheol

________________________________

From: Stuart Chale <schale at optonline.net>
To: General pattern discussion <nsrca-discussion at lists.nsrca.org>
Sent: Friday, March 20, 2009 11:54:11 AM
Subject: Re: [NSRCA-discussion] JR9303 Throttle cut/hold in airplane
software for e-power

Depends on the radio, Futaba higher models have throttle hold, or
conditions that could be used.  Just set a condition where the throttle
is always at 0.
You can probably get more specific info if we know the radio.  On
another note I did have a throttle hold set to a switch, rarely used it
and forgot about it.  Added a mix assigned to the same switch (14MZ) and
when activated the throttle well you figured it out.  Damaged the plane
on a dead stick.  Even though I unflipped the switch what I didn't
remember is that the throttle stick had to be cycled back to 0 to reset
it, a safety feature preventing you from accidentally flipping the
throttle hold off with the throttle advanced.  I no longer use a
throttle hold.
Stuart

Ihncheol Park wrote: 

    Ok.  I have a question to all those who fly E-power.
    I've been flying a little of e-powered planes, but mostly foamy and
small ones.
    Now going with 90 size before starting 2m.

    Is there any way to set throttle cut/hold in Airplane software for
entire range of the throttle?
    I've mixed throttle to throttle on a switch to 0 in all 5 point.  It
works on idle, but not if I move the throttle stick more than 1/4
throttle.  Motor still turns. 

    Am I missing something?

    I don't want that 19 + inch props turn without my approval!

    Thanks,

    Ihncheol

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