[NSRCA-discussion] Idle Down

J N Hiller jnhiller at earthlink.net
Mon Sep 10 18:51:09 AKDT 2007


Hi Glen I am back. I tried to change the switch in the idle down function
and found it didn't allow a slider only a switch, any switch. I turned the
idle down function off and set up programmable mix #5 to use the slider as
you suggested. I used switch "A" which can be left on all the time and the
slider can be used to pull down to low idle or it can be switched to low
idle similar to how the idle down function worked. Here the settings.

MIX = On
MAS = VrD (left side slider)
SLV = THRO
Link = OFF
SW = A
POS = UP
The rate on the other screen is 10%. This appears to be the percentage of
throttle travel used by the full travel of the slider.
As you suggested low idle is set with the throttle trim and only changed to
adjust the low idle or idle down. Normal flying idle is set with the slider.
I only got a couple flights with this setup but it looks like it will give
my an absolute low idle setting regardless of where the slider / flight trim
is set.
Thanks again
Jim Hiller


-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Glen Watson
Sent: Monday, September 10, 2007 10:01 AM
To: 'NSRCA Mailing List'
Subject: Re: [NSRCA-discussion] Idle Down

Jim,

...instead of using the default switch "c" to activate idle down try using a
slider.  This provides the ability to set the low idle speed and raise the
idle speed during the flight when desired. This setup is particularly
helpful when the idle speed needs readjusting when the air density
conditions change and affects the idle speed.

Example:  Start engine with the slider in the full or near full up position.
Now that the engine is running slowly move the slider to full down position.
Use the standard trim function to fine tune idle speed until a reliable low
idle speed at slider's stop position is achieved. Now the slider position
can be moved up for general flying and returned to the full down for the
ideal slow idle when desired.

Regards,
Glen Watson
http://www.geocities.com/rcprecision/pah.html


-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of J N Hiller
Sent: Monday, September 10, 2007 10:27 AM
To: NSRCA Mailing List
Subject: [NSRCA-discussion] Idle Down

Hi all I have a question.
I am using a Futaba 9-C and the idle down feature to drop the idle for
landing. The percentage setting is relative to throttle trim and needs to be
changed if the throttle idle trim is changed. Has someone figured a mix to
get a non-relative absolute idle down setting?
Thanks
Jim Hiller

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