PCM FW6.2 User manual

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FW6.2 Building Instruction October 2015
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Wing span [mm]:
1440
Wing area [dm2]:
20,5
Aspect ratio:
10,18
Take-off weight [g]:
ab 240
Airfoil:
Zone V2
BUILDING INSTRUCTION
SAL-HLG FW6.2
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CONTENTS
DATA
1. Kit –contents
2. What else do you need?
3. Electronic equipment
ASSEMBLING THE MODEL
4. General
5. Wing
5.1 Controlling the ailerons
Special hints for the installation of the
spring contacts
5.2 Installation of throwing blade
6. Fuselage
6.1 Radio board
6.2 Gluing the radio board
7. Installation of the CFR-stabs
7.1 Installation of torsion springs
7.2 Connection of the wires
8. Ballast
9. Battery shape and installation of receiver
10. Settings for the first flight
11. Tuning und tips
11.1 Flying weight und centering masses
11.2 Flight path during launch
OTHER
12. Check list before starting
13. Notes for the use
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DATA
1. Kit –contents
Fuselage + canopy
Wing
Rudder and elevator CFR
Radio board
CFR ballast tube
Lever for controlling rudder, 1 pc.
Lever for controlling elevator, 1 pc.
Kevlar wire for controlling rudder and elevator
Steel wire for torsion springs, 2 pc.
Lever for controlling ailerons, 2 pc.
1,5mm steel wire for controlling ailerons, 4 pc.
Screws for fixing wing, 2 pc.
Nylon screws for fixing elevator, 2 pc.
Throwing blade, 1 Stk.
Lead balls for ballast
1,5mm normal steel wire for ballast
Spring-loaded contacts
Building instruction (for download from our website)
2. What else do you need:
Epoxy-glue (for example UHU 300 endfest or Pattex Stabilit)
Super glue, both runny and thick
Carbon rovings
Electrical equipment (On/Off-switch, cables, plug...)
Electronic equipment
Shrinking tube...
3. Electronic equipment
Servo aileron:
- KST X08
Servo rudder and elevator:
- Dymond D-47 (cuttings on radio board are prepared for this servo)
Same style:
- Futaba FS31
- Modell Expert X31
Accumulators:
- GP NiMH Accu 35AAAH, Weight/cell 6g
(1,2 Volt 0,35 Ah 1/2AAA)
Receiver:
- 2,4GHz possible due to kevlar fuse cone
- Futaba R6106HFC FASST
- Multiplex RX-5 light M-link
- Mulitplex RX-6 light M-link
- Spektrum AR6115e
- Orange RX DSM2
Apart from RX-6 all receivers must be removed from their casings and
covered with heat shrink tube. See Chapter receiver installation.
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ASSEMBLING THE MODEL
4. General information on DLG-models
DLG-models are constructed strong enough to withstand the demands of starting, flying and landing
and at the same time light enough to achieve the least possible flying weight. Each part is dimensioned
to its possible minimum and produced using lightest and fewest material.
In order to continue this concept, please account the following when you assemble the model:
- Always use glue sparingly. Grind all gluing spots thoroughly, before you apply the glue.
- Electronic components should be placed as far as possible to the front, as you normally need
additional lead in the nose of the fuselage to achieve the necessary centre of gravity.
- For the same reason try to save weight especially when you finish and mount the stabilizer.
As FW6.2 has developed from the Fireworks-family, you may find some pictures of Fireworks 4, FW5,
FW6 and also Mini-Fireworks in the following instruction. Don’t let yourself be confused by this, the way
of building described is quite the same.
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5. Wing
5.1 Controlling the ailerons
Remove the foam to have enough space for the aileron servo.
At the moment we prefer the KST X08 servos.
We protect the servos with a shrinking tube and glue them into
the servo box. (Don’t glue the servo now, first read to the end.)
When you want to replace the servo, you just have to cut the
shrinking tube and take out the servo.
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Set the servo to its zero position and let the lever show a little
bit to the front. So you get more break deflection.
The lever length should be 6,5mm (first hole of the KST lever).
The length is measured from rotation center to hole center.
Preparing the 1.5mm steel on the end for the servo:
90° for the lever (view from the top)
And a little bit upwards (view from the side)
Now thread the steel into
the predrilled hole.
Make a test to see, if the
steel runs well with little
friction.
If not make little
corrections of the hole
with a 3mm round file.
Make the test also with the servo in the box.
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Then set the servo to the
zero position and mark,
where the steel must be
bent at the aileron side.
In order to be able to bend
the steel, push the steel
as much as possible to the
rear and fix it with a tape
to make sure that the steel
won’t move while bending.
First, bend the steel 90° in
direction of the lever.
Then, bend it a little bit
upwards.
Open the hole of the
lever to have a good
fitting without much
friction and without getting
too much clearance.
Then put the lever into the
aileron for a test. Grind on
the necessary areas to
get a free movement.
Check, if the
recommended deflections
are possible.
Solder the servo cable to the contact before you glue the servo
into the box.
Before you start gluing grind all gluing spots well.
First, glue the lever into the aileron.
Then set the servo to zero and also the aileron (fix the aileron
with a tape) and glue the servo into the box.
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Special hints for the installation of the spring contacts:
In order to avoid contact to the carbon fiber mill holes into the spots of fuselage and wing, where the
contacts will be installed. Isolate all the contacts that could touch the carbon.
During flight you should control that the screws are always firmly screwed. It could happen that the
contacts slip to the black plastic strips and the spring contacts raise from the contact areas.
So please level the plastic strips to the contact areas. So lifting off from this areas should be avoided.
Isolate all the contacts that should not touch the carbon.
A contact to the carbon could cause failures to the controls.
At the right picture you see the part which was isolated with “Plasti Dip”.
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Here is a little trick to
easily find the right
measures of the servo
cover.
Use the edges of the tape
to transfer the edges of the
servo hole to the cover.
5.2. Installation of throwing blade
The throwing blade has a molded adhesive flap. By this,
installation is greatly simplified.
Grind the gluing spots on wing and blade well and free them
from sanding dust. Then fix the throwing peg with epoxy glue.
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6. Fuselage
6.1 Radio board
First of all, push the
ballast tube into the
fuselage. For safety, you
should only stick it when
all parts are well
positioned.
For the rudder and
elevator we still
recommend D47 from
Dymond.
Therefore the radio board
which is enclosed in the kit
has cuttings prepared for
this servo.
These are the tried and
tested lengths for the
levers of the servos:
Lever for elevator:
app.10mm
Lever for rudder:
app.9mm
Measured from rotation
center to hole center.
6.2 Gluing the radio board
Before you fix the radio
board in the fuselage, grind
all gluing spots thoroughly.
In order to gain full
strength, it is absolutely
necessary to fix the radio
board in the fuselage!
Before you glue the radio
board, you should first find
out the optimal position of
the servo board. To do so,
place the radio board inside
the fuselage without gluing
and mount all servos.
You can fix the radio board
with a drop of super glue
to make the position check
easier.
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Make sure that all levers are freely movable (also with canopy
mounted), and that the deflections of the levers are big
enough.
Only now you can you fix the ballast tube with thin super glue.
Glue the servo board carefully with epoxy-glue (for example
UHU 300 endfest or Stabilit, no fast hardening epoxy resin).
You can fill the glue into a small plastic bag and cut a whole
on one corner. By this, it will be easier to apply the glue
exactly.
Add carbon rovings left and right of the gluing spots for
additional strength. Best way to apply is together with gluing of
the board.
If you have a hard landing, always check if the radio board is
still fully glued before you make the next start!
Here you see how the carbon roving is placed.
Place carbon rovings at the left and right and the upper and
lower side of the radio board.
(to avoid confusion we have to say that the last pictures show
the old fw6.)
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7. Installation of the CFR-stabs
We use an asymmetric vertikal stab for FW6. So, first of all,
please check, if you have the correct stab for left- or
righthander.
Vertical stab for right handers: has the hinge line on the left
(seen in flight direction), see 3rd picture
Vertical stab for left handers: has the hinge line on the right
(seen in flight direction), see 3rd picture
Rudder for right-handers (view from above)
Kevlar wire to the right!
Cut a slot in the rudder in extension of the axis of the fuselage.
It is advisable to leave the lower laminate uncut. Next, glue the
lever into the slot. The hole of the lever should be located just
above the hinge line.
7.1 Installation of torsion springs:
Bend the wire according to the drawing below. Then, tip back
the control surface of the vertical stab completely. Stick the
spring into the rudder, one end into the unmoved part, one end
into the control surface near the lever.
The length of the spring should be 20mm.
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Then harden the spots with super glue.
Push the vertical stab (first for a test) into the oval end of the
boom until ist stops. Then check, if the stabilizer is aligned
correctly to the wing.
It has proven to put the entire model in a supine position on a
flat surface and then to set up the stab with an angle meter.
If you want to work quickly and build light, you can stick the stab
with thin super glue. But since the super glue is brittle, you will
certainly achieve a better bonding with epoxy glues. (UHU
300 endfest, Pattex Stabilit or similar .)
7.2 Connection of the wires
Drill a hole in the boom to lead the wire inside the fuselage to
the servo.
We stick a bowden cable into the hole, so that the rope does
not rub against the carbon edge and to reduce the weakening of
the fuselage due to the hole. This is the white pipe, which you
can see in the picture.
The small carbon lever is for the rudder and the long one for
the elevator.
Now you can hook in the kevlar wire into the lever.
Make a loop, twist the end and fix it with a drop of super
glue.
Note: Don’t use a shrinking tube, as the kevlar wire could be
damaged by the high temperature during shrinking.
Complete the elevator in the same way.
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If you want to make the most beautiful solution, you can lead
the wire out of the pylon and place the lever right behind. But
you have to shorten the lever a little for that.
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8. Ballast:
As ballast we use lead balls from the fishing shop. You can
easily assemble and vary this kind of ballast.
The balls are strung on a steel wire of 1,0mm diameter. Bend
the end of the wire to a small hook. With this hook the ballast
pack can be locked on the radio board.
To locate the exact position of the ballast inside the fuselage,
lay the model on a device for measuring the centre of gravity
(see picture). Move the ballast until you get the desired centre
of gravity.
When bending the wire you should make sure that you don’t
create 180 ° curves, as the wire may break then.
Put a drop of thin super glue onto the first and the last lead
ball to fix their position. As you must curve the ball chain for
threading it into the ballast tube, bend the wire in the desired
curvature when you glue the balls.
Insert the ballast through the left opening of the fuselage into
the ballast tube.
The hook of the ballast package is locked in the servo board.
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9. Battery shape and installation of receiver
Depending on the size of battery and receiver different shapes
of battery packs are possible.
In any case we recommend to assemble the battery with tape
and make a test for fitting with the receiver inside the fuselage
before you solder the battery pack.
On the right side you see two possible battery shapes
If you absolutely want to install a great 8 channel 2.4GHz
receiver, it is also possible to remove the power strip and solder
the servos directly to the board. This is quite normal with our
indoor-colleagues.
To the right a few receivers that fit well in the fuselage
(without housing):
From left to right:
- Multiplex RX-5 light M-link
- Multiplex RX-6 light M-link
- Spektrum AR 6115e
- Orange RX DSM2
Here once again these receivers, partly without housing:
- Multiplex RX-5 light M-link (without housing, housing right next
to it)
- Multiplex RX-6 light M-link
- Spektrum AR 6115e (without housing)
- Orange RX DSM2 (without housing, housing right next to it)
-Futaba R 6106HFC FASST (with and without housing)
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10. Settings for the first flight
Centre of gravity: 68-70mm (measure from the leading edge of the wing to the back)
Expo at app. 50%
Ailerons (measure near fuselage)
Flaps negative (start, speed, fast thermal search) (measure near fuselage)
Flaps positive (fast thermal search, gentle circling) (measure near fuselage)
Flaps positive (thermalling) (measure near fuselage)
Landing position (measure near fuselage)
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Snap Flap (measure near fuselage)
Snap Flap negative (for better leveling out of the flight path at the highest point of the launch)
(measure near fuselage)
Rudder (measure at deepest point)
Set the elevator on 0 at your first flight.
Don’t make a SAL-start at your first flight. Hold the glider on the fuselage and throw it gently.
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11. Tuning and tips
11.1 Flying weight and centering the masses
Our long experience has shown that the take-off weight and
centering of the masses are the most important factors to
optimize the starting height.
The model should be light.
The mass of the model should be well centered.
A lower mass can be accelerated to a higher top speed during
the discus rotation. The higher top speed, in turn, has a
significantly higher impact on the resulting kinetic energy than
the mass of the airplane. To be precise a square. Ekin = m * v²
Due to the good mass centering the oscillation of the model
after release is reduced. This means, the better the centering of
masses is, the less it slows down.
The centering of masses is also improved by loading more
ballast. This increases the flying weight, but everyone should try
out, what is his personal optimum. Every pilot has his own
optimal weight of glider, which he can accelerate best.
In addition, the amount of ballast depends of course on the
strength of wind and thermals. The Zone V2 can tolerate ballast
very good, and you should not fly with too little weight at higher
wind speeds.
As you can see, there is still plenty of room to optimize.
To put it into numbers, Mark Drela has developed a method to
measure the yaw of gyration. This defines how good or bad a
glider has centred its masses:
Hang your model upside down on two 1,5m long threads, which
you fix 30mm from the centre of gravity. Now move the glider
for 45° and the let it swing. Take the time of 5 swings. Repeat
this process several times to get an average value.
The faster the model swings, the faster it will stabilize after the
launch and the higher it will start.
11.2 Flightpath during start
You could reach more starting height when you adjust the
flightpath to the wind strength. When the wind is weak you
should start very steep into the sky. And when the wind is
strong the flightpath should be much more flat.
Always TEST THE RECEPTION on ground before you fly!
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OTHER
12. Check list before starting:
1. Check centre of gravity
2. Check control surfaces:
Do control surfaces move in the correct direction?
Check the greatest swings
3. Check reception
4. Check control surfaces before each flight.
Do all control surfaces still move correctly?
Is there enough power in the accumulator?
Are the brakes retracted?
You can save the retraction of the brakes in your start
setting. By this, you can never start with extended
brakes.
5. Gentle launch from the fuselage. No DLG-launch at your
first flight. If there are some wrong settings, everything
will go too fast at the disc-launch to correct these
failures by steering.
13. Notes for the use
To avoid heating of the carbon surface, models with carbon
wings should not lie in the sun.
During flight heating by the sun is no problem, as the model is
cooled by the wind. On ground the glider should be kept
inside protective bags or in the shade.
After every ungentle landing, you must check your model for
possible damage, such as:
- Is the radio board still glued thoroughly?
- Did the leading edge of the wing burst open?
- Did rudder or elevator get damaged?
Even a small damage could lead to write-off at your next
launch!
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