Today's Message Index:
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1. 10:33 AM - Re: Sensitive Elevator (andrewtub)
2. 12:43 PM - Re: Re: Sensitive Elevator (Larry McFarland)
3. 04:40 PM - Re: Sensitive Elevator (andrewtub)
4. 05:00 PM - Re: Re: Sensitive Elevator (Steve Freeman)
5. 06:05 PM - Re: Re: Sensitive Elevator (FLYaDIVE)
6. 06:34 PM - Re: Sensitive Elevator (andrewtub)
Message 1
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| Subject: | Re: Sensitive Elevator |
I know this is an old subject to most but new to me. Here in my in put on the
issue that i have sent to Zenith for approval....
This improvement is a in order to help de-sensitize the elevator and better balance
the controls. Bare with me as I explain and forgive me if the is something
that has been reviewed in the past. Also this is with the dual stick option.
According to the geometry of all the cable and rod attachment points at the elevator
and the control stick, the deflection of the elevator is equal to the deflection
on the control stick. Before the reduction of down throw to in the elev,
the elev and stick deflections were both 52-62 degrees. Now that the Elev
throw is 42-47 degrees so is the control stick.
My goal is to regain the 52-62 degree deflection of the stick and maintain the
42-47 degree deflection of the Elev. This will make the pilot move the stick
more (with less force) in order to have the same amount of deflection in the Elev...thus
desensitizing the elev.
After some CAD work I have determined the the 5/16 hole in the horn of part number
6-ds-2-2 will now be 92.5mm from the center of the rotational axis of 6-ds-2-opposeded
to the original 130mm hole location indicated on print 6-DS-2.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=367075#367075
Message 2
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| Subject: | Re: Sensitive Elevator |
Hi Andrew,
It sounds like you haven't completed your aircraft if drilling more holes
and such are being contemplated. I 'd recommend you stay with the drawing.
The reduction you mention would result in load-changes that would put more
force on
your control stick. This would cause you to lose the very control
sensitivity needed for the elevator. Most people flying the Zeniths comment
that "the elevator has a lot of authority" and requires only small movements
during maneuvering, landing etc.
Decreasing the stick throw while increasing the force seems contrary to your
need and perhaps a safety issue.
Respectfully,
Larry McFarland 601HDS at www.macsmachine.com
-----Original Message-----
From: owner-zenith-list-server@matronics.com
[mailto:owner-zenith-list-server@matronics.com] On Behalf Of andrewtub
Sent: Thursday, February 23, 2012 12:32 PM
Subject: Zenith-List: Re: Sensitive Elevator
I know this is an old subject to most but new to me. Here in my in put on
the issue that i have sent to Zenith for approval....
This improvement is a in order to help de-sensitize the elevator and better
balance the controls. Bare with me as I explain and forgive me if the is
something that has been reviewed in the past. Also this is with the dual
stick option.
According to the geometry of all the cable and rod attachment points at the
elevator and the control stick, the deflection of the elevator is equal to
the deflection on the control stick. Before the reduction of down throw to
in the elev, the elev and stick deflections were both 52-62 degrees. Now
that the Elev throw is 42-47 degrees so is the control stick.
My goal is to regain the 52-62 degree deflection of the stick and maintain
the 42-47 degree deflection of the Elev. This will make the pilot move the
stick more (with less force) in order to have the same amount of deflection
in the Elev...thus desensitizing the elev.
After some CAD work I have determined the the 5/16 hole in the horn of part
number 6-ds-2-2 will now be 92.5mm from the center of the rotational axis of
6-ds-2-opposeded to the original 130mm hole location indicated on print
6-DS-2.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=367075#367075
Message 3
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| Subject: | Re: Sensitive Elevator |
Larry, What I am talking about is the opposite of what your concern is.
This change will require less stick force and have more stick travel. The more
stick travel will equal that of the original design while the elev deflection
would meet the new specs.
Here's my deal. I hear all these opinions about.. just fly it for 10-15 he's and
you will get used to it. Why should I get used to an undesirable trait of
the plane when I have the opportunity to fix it now. I will still have the required
elev deflection and better input resolution.
AT
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=367098#367098
Message 4
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| Subject: | Re: Sensitive Elevator |
<< an undesirable trait of the plane >>
Hmmmmmmmmmmmmmmmm
Steve
-----Original Message-----
From: owner-zenith-list-server@matronics.com
[mailto:owner-zenith-list-server@matronics.com] On Behalf Of andrewtub
Sent: Thursday, February 23, 2012 5:40 PM
Subject: Zenith-List: Re: Sensitive Elevator
Larry, What I am talking about is the opposite of what your concern is.
This change will require less stick force and have more stick travel. The
more stick travel will equal that of the original design while the elev
deflection would meet the new specs.
Here's my deal. I hear all these opinions about.. just fly it for 10-15
he's and you will get used to it. Why should I get used to an undesirable
trait of the plane when I have the opportunity to fix it now. I will still
have the required elev deflection and better input resolution.
AT
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=367098#367098
Message 5
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| Subject: | Re: Sensitive Elevator |
It is NOT an undesirable trait. What is undesirable is that 99% of the
pilots out there learned on a SLOPPY C-152. THAT DOES
have undesirable characteristics.
What you suggest is that you could run out of stick.
On Thu, Feb 23, 2012 at 7:39 PM, andrewtub <andrewtub@yahoo.com> wrote:
>
> Larry, What I am talking about is the opposite of what your concern is.
>
> This change will require less stick force and have more stick travel. The
> more stick travel will equal that of the original design while the elev
> deflection would meet the new specs.
>
> Here's my deal. I hear all these opinions about.. just fly it for 10-15
> he's and you will get used to it. Why should I get used to an undesirable
> trait of the plane when I have the opportunity to fix it now. I will still
> have the required elev deflection and better input resolution.
>
> AT
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=367098#367098
>
>
Message 6
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| Subject: | Re: Sensitive Elevator |
Seriously, I had no intention to fuel a fire. It's just a mere suggestion to better
a feature of the plane. In allot of the reviews I read it is mentioned
that the controls could be more balanced. I get the same from three local zodiac
pilots. Why not try to improve when the opportunity is there?
In response to running out of stick... the elev will still have full range of
motion to the up and down stops specified by zenith.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=367106#367106
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