TF Model Lynx 500 Instructions
Thank you for purchasing TF Model Lynx 500. Please read the instructions thoroughly and carefully
before proceeding with the actual assembly. Some steps of assembly are required to be
done before others, so dry fitting of all the steps and formers are a must
before proceeding with the actual assembly.
Wood Formers Assembly
Assemble the formers F3 and F4 as in the photo and glue
Dry fit the former assembly F3 and F4 with base board
Dry fit the formers F into the front of the rear fuselage as in
the photo, then dry fit in the baseboard and locking it to the formers.
Dry fit the former F3 and F4 assembly onto the base board.
When assembled all the formers, make sure that the whole assembly sits
Please pay extra attention here as it determines the straightness of
the base board.
Further reinforcement can be had if you glue an additional
former is glued in just behind the side doors.
The assembly should look like this. Once all is squared
and aligned, mark the locations of the formers and go
to the next step before gluing in the formers.
Before gluing in the formers, you must open a hole on both
sides of the fuselage for the metal landing gear bearer
to pass through. Using the premolded panel line as a guide.
Leave a 5 mm lip both on top and bottom for gluing on the winglet.
Leave 10 mm lip in the front and back of the hole and drill a 2 mm
hole in the front and rear lip. This will be for screwing in the winglet.
Reinforce the screw holes with scrap wood from the inside.
Once the above step is done you can now proceed on to glue
all the forners to the fuselage.
Landing Gear Assembly
Centre the landing gear metal cross member. Make sure the cross
member protrudes the same distance from the side of the fuselage on
both sides. Drill 2 2mm holes for mounting the cross member.
The landing gear cross member should sit as in the photo.
Note also the two holes in front and behind the opening.
Drill the 2 holes noe for mounting the wing stubs.
Locate the landing gear wing stubs and open up the hole
for the landing gear cross member using the photo as reference.
Fit the cross member into the wing stub and push the wing up
against the fuselage. Using the 2 holes drilled in the above step as
template, transfer the holes' location onto the wing stub for drilling.
Reinforce the wing mounting holes on the inside of the fuselage
with scrap wood. Screw in the wing stubs on the inside.
Open up a hole on the under side of the wing stub for the landing
gear strut.. Once opened use the large centre hole of the cross member
to mark the top hole for the gear strut to pass through.
Top hole for suspension gear strut to pass through.
Install the front landing gear strut simply
by pushing through the hole and fix with the
nut supplied with the strut.
A recess needs to be trimmed for the front landing gear
at the fuselage front section.
Install the main landing gear with the screws supplied. The lower photo
has the wing stub ommitted for clarity.
Fuselage Sections Pins and Magnets
Drill holes on one side of the fuselage section,
fit the section onto the main section and align on sides.
Fix with clamps or tape and using the drilled holes
as template, transfer the hole location onto the other
side and drill the corresponding hole on the other side.
Drill 2.5 mm holes and open up using round file if needed.
Reassemble the sections, align them then insert and glue the pins
in from one side. Glue the magnets onto desired locations on
both fuselage sections at the desired positions.
Note polarity of magnets before gluing in place.
Do the same procedure for the fuselage front section
locator pins and magnets.
Fit the mechanic into the fuselage, centre it and align it
using the pre opened swashplate hole for reference.
Once you are satisfied with the placment of the
mechanic, use the mechanic's 4 mounting holes as
template and then mark the 4 fixing screws'
location for drilling. Drill through to the
Fix the mechanic using 4 screws from the bottom of
Elbow Gear Box Assembly
Locate the elbow gearbox parts and assemble.
Slide in the 20 mm diameter tail tube to check fit but
DO NOT GLUE AT THIS TIME.
Open up the tail of the fuselage as in photo.
Slide in the elbow assembly into the tail.
The photo shows the correct relationship between the tail boom
and the Elbow Gear Box Assembly. This applies to all our
models that uses the Elbow Gear Box Assembly.
Using the above photo as a guide, install the pulley
wheel, thread the belt through and install the tail
gear box along with the belt. Once all is on check to see if the tail
boom needs to be cut. The tail boom should butt up against the
base board of the elbow assembly as in the photo.
With the elbow assembly still free to move, tack glue in place with CA glue
and then pull on the tail tube to adjust belt tension.
Turn the rotor head to check that the belt is correctly installed
and the tail rotor turns in the correct direction. Also check that
the belt does not rub against the tail boom and tail tube sides.
Ajust the elbow gear box until all is achieved.
Once you are satisfied with the fitting, permanently glue
the Elbow Gear Box Assembly into place.
Optional Rudder Servo Mounting
Provision is made for mounting the rudder servo inside the
fuselage instead of on the mechanics. Locate the rudder servo mount in the
The above 2 photos shows where and how to assemble the
rudder servo mount. The servo mount is designed around
a Futaba 9257, slight modifications maybe required for other brand
and size of servos.
Rudder Control Rod Assembly
Push rod outer sleeve at the tail.
Push rod outer sleeve on the rudder servo side.
With the tail gearbox installed and the rudder servo mounted, run the plastic
rudder control rod outer plastic sleeve through from the rear forward.
Line up the sleeve with the servo horn on the rudder ensuring a straight
and smooth run. Slip in the metal push rod into the sleeve and test for smooth
run by hand. Clip off excess length of the outer sleeve on both sides, then slip in the
metal push rod and hook it up to the rudder servo. Operate the servo to ensure
the operation is smooth. Now measure off the metal pushrod on the tail pitch bell
crank. Cut off excess. Operate the rudder servo again for smooth operation before
gluing the outer sleeve to the inside of the fuselage. Use thin CA for this.
Horizontal Stabilizer and Tail Cover Assembly
Glue the horizontal stabilizaer onto the tail cover top cone.
Dry fit the top cone with stabilizer onto the tail cover and check the fit with the tail gear
box. Use a pencil and mark the area required to be trimmed for fitting
the tail gear box and the tail pitch bell crank. Once satisfied with the fit, drill
1-1.5 mm holes for fixing the tail cover onto the tail of the fuselage.
Refer to the photo above and glue on the vacuum formed details.
Sliding Doors (Optional)
A pair of PVC sliding doors is provided. If you choose to install the sliding doors,
use a Dremel to trim the sliding door openings and then trim the PVC doors to fit.
Glue magnets on the inside of the door panels and the inside of the fuselage to
allow for different positions of the doors.
Generic Instructions For Fuselage Stays
Locate the fuselage stays package in the kit as in photo.
You will have to determine the best location on the mechanics and the fuselage to install
the fuselage stays. Once you have determined the best location drill a 3 mm hole in the
mechanic and fuselage inside lip or former and install the fuselage stays.
With the mechanics installed measure the distance between the stays of the mechanics and
fuselage and then bend one side of the stay rod. Dry fit the stay rod to check fitting,
once satisfied with the fixing, clip off the excess rod and then secure by screwing in