FB Jets T33, Инструкция по сборке, Страница: 11 / 19

FEI BAO/FB Jets Large T33
Step 7: Horizontal Stabilizers
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The horizontal stabs build up in a similar fashion to the vertical stab in terms of the servo
installation. Install your servos in the space provided and modify slightly as required if your
selected servo does not fit. Repeat all steps, including the installation of the servos.
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Before installing the servos, use your Matchmaker or equivalent to centre the servos and
match the positions of the control arms.
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Remember that the servos are mount reverse but need to move the same which required
either a matchbox servo matching in the powerbox.
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If you are using JR Heavy Duty Arms and the positions don’t match, try rotating one arm 180
degrees before deciding which half of the arm to trim off.
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Install the elevator servos into each tailplane and connect to the control arm attached to
the elevator mechanism.
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This is an important step to ensure that the installation is tight and all screws and fasteners
are tight and installed with Loctite.
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Do not use the rubber grommets as they may cause flutter if there is too much play.
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Attach a 36" heavy-duty 22-gauge extension to each servo. Heat shrink the connections for
safety.
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Copy these steps for the other elevator and then centre and match both elevators to the
RX system.
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Run the elevator servo extensions from the rear of the fuse forward. I tend to run these
extensions and the rudder extension lead through a Teflon tube for heat protection from
the thrust tube. With the ceramic Teflon tubing, the servo wires will be protected from heat
and abrasion for the life of the model.
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With control arms in the vertical position and the control surface centred, adjust the
linkages to the proper length for both elevators and the rudder.
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With the two elevator servos activated through the Matchmaker, set the length of control
linkage such that the elevators are equally cantered and attach. Make sure not to over
tighten the bolts such that the arm binds.
Step 9: Speed Brake Setup
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I setup the speed brakes at this stage. Do this while before you install the engine.
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Setup the air ram connected to your dual action air valve. I used a dual action Xicoy air
valve for simplicity, however the manual valve supplied with the kits is perfect for this
function. Using this valve, operate the air ram to ensure all function is working.
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Re-install the air ram into the holder and mount as pictured above and secure.
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Attach it to the Speed brake function and test the ram using the manual valve to setup.
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Check that the Speed brake opens and closes nicely with appropriate pressure to stay
closed.
Step 10: Engine and Pipe
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Clean the fuselage thoroughly before installing the engine. If you need to trim the intake for
engine clearance, use a vacuum while you work. This will reduce the chance of a foreign
object finding its way into your engine later on the first run;
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Drill a hole in the thrust pipe mounting tabs at their mid-point.
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Position the pipe on the rear of the lower bypass. The tabs are slightly offset to one side of
the pipe this is the top.
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With the pipe fully on the lower bypass, and the mounting tabs equally spaced from the
top, drill holes through the engine block mount and attach/secure the pipe tabs to the
block. If needed glue additional ply blocks for greater support of the pipe.
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Note that for additional support we have placed two Stainless Steel pop rivets through the
front of the thrust tube and the rear of the by-pass.
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Install the engine now on the mounting rails. Using a Kingtech k170, we did not have to
make any adjustments at all to the engine mounting rails. If you are putting a Jetcat in your
model, the additional Jetcat engine rails are provided
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These were perfect and the engine centred perfectly in the trust tube.