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Control Yoke & Column
In this section you will
find options for the control yokes and columns for your
flight simulator. I am including a number of options to
select from based upon the research that I completed
prior to reaching my decision to purchase actual 737
flight controls. Below see pictures of my actual control
yokes and columns. I just finished refinishing them
today, (10/16/05) and will now start to work on
fabricating my rudder pedal assemblies before wiring my
flight controls to make them functional.
My Control Yoke
I have finally began
to do serious work on my control columns. I purchased a
set of plans from Chad Demuth-Olsen detailing the
installation of real flight controls. Although a lot of
information is available in a number of different
websites, Chad's plans saved me a lot of time enabling
me to spend more time building and less time doing
research. Below is a picture of my control columns
attached with a homemade crossover bar. The columns are
installed in their frame and ready for the next step in
the installation. For those interested in purchasing
Chad's plans click on the photo below for a link to
Chad's website.

In this photo I am
testing the fit of my control columns and frame in the
platform.

After insuring a good
fit in the
platform I removed my control columns and began the next
stage of Chad's plans; the installation of a steel
channel to improve stability as well as providing
support for the bearings that help with connecting the
control yokes to move simultaneously.

Below is a picture of the
captain's control yoke installed on its control column.
I have rewired the yokes and tested them for continuity
and labeled them for simplicity in the future.

In planning my simulator
I did some research on methods of providing simulated
control forces on my flight controls. There are
companies who make control loaders for flight simulators
but they are very expensive and well beyond my budget.
Instead I designed my own control loader. I built the
model below to test my design. After being satisfied
with the results I proceeded with a large full scale
version and tested it on my flight controls.

Here is my actual control
loader attached to my flight controls. The platform
below my flight controls moves fore and aft in response
to the trim controls on my control yokes. This increases
the tension in one spring, while reducing the tension in
the spring in opposition to the other one. This creates
an increase in force required to maintain the yoke in
the same position. By being able to change the force
required to maintain neutral position of my control
columns, I will be able to trim the aircraft to
alleviate control forces in response to changes in power
and pitch settings in my sim.

In the picture below note
the controls columns are all the way forward against
their stops. Note the position of the control loader
platform in its aft position. This creates an increase
in tension in the aft springs while reducing the tension
in the fore springs.

While I was designing
this system it occurred to me that I could use this
platform to cause movement in my flight controls in
response to commands while the autopilot is engaged.
Using input from Microsoft's Flight Simulator (MSFS) I
believe I will be able to create signals to the linear
actuator that adjusts the position of the platform
thereby creating movement of the columns in response to
pitch. It then occurred to me that I could build another
control loader to be used to respond to roll commands
from MSFS.

Below is a picture of the
loader that will be used to control the roll of my
control yokes while the A/P is engaged. I still have to
install the liner actuator for the roll control loader.
The next step is to attach my flight controls to the
necessary interface cards to finish this project. Then I
will began modifying my platform to allow for
installation of the control loader into my sim along
with the control columns and yokes.

Below I have installed
the linear actuator to initiate roll commands from the
autopilot to simulate movement of the flight controls in
response to these commands. Click on the photo below for
a direct link to the supplier of these actuators.

Below is a picture of
the forward section of my platform that has been
modified to accept the control loader.

Below is a photo with
the control loader installed.

Finally, after a lot
of hard work, my control columns and yokes are installed
and my control loader works just as I planned. Now I
have to complete wiring all of my flight controls to the
interface card to make them completely functional.

This is the captain's
control yoke for my flight simulator. Click on the
picture for a link to the supplier of my flight
controls.

These pictures show
various stages of refinishing. Note one column is ready
for primer. The other has been stripped of Boeing grey
but still has primer in place.


In this picture both
columns are stripped and ready for their coat of primer.

In this picture one
column has been primed and the other has been primed and
the finish coat has been applied. I used a primer for
aluminum and finished with a coat of primer with a grey
blue color. This may or may not be my final color. I
will wait until I order my flight panels and then work
on an exact match. In the meantime this coat will
protect my columns.

Here is a picture of
my completed flight column with control yoke. I soon
will begin the task of wiring my flight controls to make
them fully functional.

Suppliers of Control Yokes and Columns
Below are numerous
control yokes that are available for purchase. I
reviewed many sites for flight controls. While there may
be more options available I feel that this list covers
most of the flight control options that would be
suitable for use in a 737 flight simulator. I make no
recommendation for any of these suppliers; rather I am
showing them as a source for those who are looking to
purchase replicas of flight controls of the 737 or other
flight controls. I addition to these suppliers I am also
showing other aircraft salvage companies that are
offering actual flight controls for the 737.
The set of controls below
is one of the best that I came across for a replica of
the controls for a 737. It is my understanding based
upon reviewing Flight Deck Solutions forum as of
10/16/05 that the supplier of these controls is not yet
ready to ship their product to the United States. This
is a set of controls that I would be interested in (when
they become available) if I was interested in a set of
replicas that are plug and play. They are available as a
dual set of controls. Click on the picture below for a
direct link to the supplier of these controls.


The flight controls
pictured below are also ones that I would be interested
in if I were looking for a set that was plug and play.
These controls are also available as a dual set. Click
on the picture for a link to the supplier for
information and more pictures.

The flight controls below
are also a replica of the flight controls of the 737.
Click on the picture for a link to the supplier's
website for more information and additional pictures.

The flight control
pictured below is a combination of control yoke and
rudder pedals. Click on the picture for a direct link to
the supplier with more information and additional
pictures.

The flight controls below
can also be used for the flight controls of the 737.
Click on the picture for a link to the supplier's
website for more information and additional pictures.

The following flight
control options, while not replicas of the 737 can also
be used for your flight simulator. Click on each set of
controls for a link to the supplier and additional
information and more pictures.


In the event you want to
build your own replica of flight controls the following
website provides information on building a replica for
the flight controls of the Boeing 777.

In the event that you,
like myself, decide that only the actual flight controls
from a 737 will do for your flight simulator, below are
a few links to suppliers who supply actual aircraft
parts, including flight controls from the 737.
Airline Pilot's Historical Society
www.oncealoft.com
I
purchased my flight controls from Nick Louis at
Airline Pilot's Historical Society and was very
satisfied with my purchase. I found Nick to be very
responsive and reasonable in his prices. He had the
items that I requested and was very timely in
returning my e-mails. I received my flight controls
within 5 business days of him receiving payment from
me. I would use his company again without
reservation.
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