Re-design up2you 9761586 User manual

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Manual up2you-ARF
No.: 9761586 / 9756095
Content:
1. Introduction ........................................................................................................................ 2
2. Unpacking and First Assembly ............................................................................................ 3
3. Attachment of the Winglets ............................................................................................... 5
4. Integration of RC Components ........................................................................................... 7
5. Installation of Motorization Parts in the Electro-Section ................................................. 15
6. Adjustment of Center of Gravity (CG) and Elevons .......................................................... 19
7. Flying ................................................................................................................................. 26
8. For technical interested Modellers ................................................................................... 31
9. General Informations ......................................................................................................... 36

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1. Introduction
The up2you-ARF is based on a series of predecessors which have been developed during the
last 20 years.
The main geometry data has been changed several times in order to optimize them for a
tailless wing in this size and weight.
The model has on optimized lift distribution and an airfoil which suits very well to the speed.
The profiled winglets increase the lift further.
Drag counts could be saved by deleting a “real” fuselage – this increases the gliding
performance of the model.
The mixture of balsawood, plywood, CFRP and GFRP enables a weight optimizes and
accurate construction.
Special attention has been put on an uncritical handling of the model. It can be flown very
slowly but the reaches its best performance with intermediate speed.
The model can be assembled very quickly with the arrestor hooks; therefore, it is well suited
for holydays or mountain hikes or just to fly a quick round after work.
Due to the possibility to install the electro-section between the wings, the pure sailplane is
enhanced to an electro-glider with the possibility to be launched in plain regions without any
further equipment (bungee).
The following assembly times should be considered:
 Winglet Arrestment 2 hours
 Integration of RC 5 hours
 Integration of motor/controller 3 hours
 GC and other adjustments 2 hours

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2. Unpacking and First Assembly
Check if the following parts are included in the package:
 Left and right wing
 Left and right winglet
 Electro-Section
 Various small components to assemble
Assemble the wings with the short CFRP (carbon fibre reinforced plastic) connectors. The
arrestor hook must be fully opened – turn it fully to the left with a small screwdriver, refer to
figure 1.
Then slide both wings together and arrest the hook, refer to figure 2. The arrestor hook will
be noticeable latch in the pin of the other wing.
Assemble in the same way the Electro-section between the wings. Use for this the longer
CFRP connectors.
For the assembly of the Electro-glider, two arrestor hooks must be locked, refer to figure 3.
Figure 1, Fully opened Arrestor hook

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Figure 2, Position of locked arrestor hook (wing not together for demonstration)
Figure 3, Tow arrestor hooks for the electro-glider

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3. Attachment of the Winglets
In order to improve the transport of the glider for example on mountain hikes, the winglets
can be detached from the wings.
They are fixed by a small screw and two pins (2mm diameter, 10mm length). The two pins
must be glued into the baseplate of the winglets.
Before gluing them in the baseplate, they must be cleaned with acetone or thinner. Place
the winglet at its position at the wingtip and hold it. Then insert the pins from the outside of
the baseplate that approx. 5mm will be still visible, refer to figure 4. Ensure that the pins in
this position are already inserted in their bores in the outer rib of the wing.
Now fixate the winglet with the screw at the wing.
Apply epoxy on the part of the pins which are still visible and push them fully into the
baseplate so that they are aligned with the baseplate.
This method ensures that the winglets will be not glued on the outer rib of the wing which
would probably lead to problems to disassemble them.
After the epoxy has been hardened, the winglets can be removed.
Check the correct gluing of the pins by mounting the winglet again on the wing, refer to
figure 5.
Figure 4, Insertion of the winglet pins

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Figure 5, Winglet correctly mounted on the wingtip

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4. Integration of RC Components
The servos for the elevons (shortcut for Elevator and Aileron = combined function of
elevator and aileron) will be on the cover mounted which is fixated with four screws on the
lower surface to the wing. We propose to use the following servo:
ROBBE FS 166 BB MG Digital, #9756143
You may use other servos but the size shall not exceed the following dimensions:
25 x 25 x 9 mm (high x width x depth)
We propose to glue the servos after some adaption work on the cover with just 4 points of
glue. If a servo once fails, it can be easily removed by using a small grinding tool.
The connection from the servo the elevons control horn is on the upper surface of the wing
and therefore, the servo lever must be guided through the shrink film. Mark the cut-out for
the servo lever on the shrink film, refer to figure 6.
In order to achieve a protected edge of the film, you should glue a piece of 1mm plywood
under the cover before cutting out as it is shown in figure 6 and figure 7. Glue the shrink film
at the edge of the cut-out on the piece of plywood by using a modeler iron, refer to figure 7.
Figure 6, Marking of the cut-out for the servo lever

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Figure
7,
Gluing of the shrink film on the piece of plywood (edge of cut-out)
After the cut-out is accomplished, insert the servo and cover into the wing in order to check
if it fits, refer to figure 8.
Attach the cover on the wing by using two screws. Check if the servo lever you are intend to
use is suitable regarding the length. There must be enough clearance for the clip of the
pushrod under full deflection of the servo.
Now, adjust the servo on its correct position (servo lever should be move more or less
parallel to the ribs) and fixate the servo with a point of glue, as it is shown in figure 9.
Then remove the cover and fixate the servo fully with 4 points of epoxy on the cover, refer
to figure 10.

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Figure 8, Tentative insertion of the servo in the wing
Figure 9, Fixation of the servo

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Figure 10, Servos glued on the cover with some points of epoxy
Now the servo cables will be soldered together and installed. You should use preferably very
thin cables in order to save weight. The loads on the servos are very low and therefore there
will be no high current through the cables.
Lengthen the cables should take into account some margin.
Instead of soldering, you may use connectors but we do not recommend this. A well
accomplished soldering connection is better than a connector. Connectors can be a source of
defects. Figure 11 shows the soldered and isolated cables.
Connect the cable to the cord which is inserted by the manufacturer in the wing. Use some
tape in order to have a connection which does not encumber the cable from slipping
through the wing. It is annoying if the connection opens during the installation of the cable –
possibly the wing must cut open if this happens. Figure 12 shows the connection.
Apply soft tension on the cord only. If you have to apply much tension, this could be an
indicator that somewhere the connection clamps in the wing. It is better in this case to pull
the cable a little bit back and then start again.

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Figure 11, Cables soldered to the servos and isolated
Figure 12, Connection between the cable and the cord

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Then, the battery and the receiver can be installed for test purposes.
The battery for the pure glider version is placed in the front part of left wing. The dimension
should not be larger than:
50 x 45 x 12 mm (high x width x depth)
The capacity of the battery can be low – 500mAh should be enough for an afternoon flying
event.
The receiver is placed in the aft part of the left wing. There should be enough space, so its
size is relatively uncritical, refer to figure 13.
The servo of the left wing can be connected directly in the receiver. The connector of the
right-wing servo must be connected before the wing is assembled together.
As shown in figure 13, there is a small switch connected (glued) to the battery which opens
and closes just the power line (red cable) from the battery to the receiver. The ground cable
remains closed.
In order not to disconnect the battery cable from the receiver for charging purposes, there
should be an additional cable soldered on the battery which could be used directly for
charging.
Figure 13 shows the proposed details which have been describes above. It is understood as a
proposal only and you may use your own ideas to connect battery, on/off-switch and
receiver.
After installing everything correctly, you can use some foam material in order to fix the
battery and the receiver.
With the installation method described above, it is only needed to connect the right-wing
servo to the receiver and switch the receiver on.
Pay attention during sliding the wings together that there is no cable jammed between the
both wings. They may be damaged when you arrest the hook.

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Figure 13, Installation of RC components in the pure sailplane
Switch the RC transmitter on and choose the correct modus. The functions “up-down” and
“roll” must be mixed. Such a mixing function is usually included in the RC transmitter (“delta-
mix”).
For a first functional test, the servos should be mounted in the wings. Check the if the servo
levers are in the neutral position as it is shown in figure 8. If this is not the case, adjust the
levers in a first step mechanically by disassemble it from the servo and adjust re-assemble it
on the correct position. Minor deviations from neutral position can be corrected
electronically with the corresponding function of the RC transmitter.
Check in the next step if the servo movement is correct with respect to the movement of the
stick of the RC transmitter.
Optionally: Extension cable to right
wing servo (easier to connect to
receiver)
Battery
charging cable
Battery cable to
receiver (via
Switch
)
Receiver
Servo cable from
the receiver-side
wing

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Use the table below and carry out the 4 steps by visiting the servo movement whilst
commanding by the stick.
Test Steps Command of Stick Check of right-wing
servo
Check of left-wing
servo
1. Step Pull Servo lever must
move in flight
direction
Servo lever must
move in flight
direction
2. Step Push Servo lever must
move in opposite
flight direction
Servo lever must
move in opposite
flight direction
3. Step Stick to right side
(roll command right)
Servo lever must
move in flight
direction
Servo lever must
move in opposite
flight direction
4. Step Stick to left side
(roll command left)
Servo lever must
move in opposite
flight direction
Servo lever must
move in flight
direction
Note that the check above is valid only for the installation of the servos as proposed in this
manual, i.e. actuation of the elevons on the upper surface of the wing.
If you have enough experience with RC-models, you can skip the test steps above. As a
summary: By pulling the stick, both elevons must be moved up and vice versa. This is
identical with the movement of the stabilizer control on a model with fuselage and stabilizer.
By moving the stick to the right side, the right wing elevon must be move to down and the
left one up. Vice versa for a left command. This is identical for the ailerons of a RC-model.
This closes the Installation of the RC. The correct adjustment of the elevons as well as the
preparation of the linkage from the servo lever to the control horn of the elevons is
describes in chapter Fehler! Verweisquelle konnte nicht gefunden werden..

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5. Installation of Motorization Parts in the Electro-Section
The up2ou-ARF is not intended to be a motorized speed model. The motorization proposal
below is intended to power it in a way to reach anytime the thermals from plain regions.
Motor: SCHNURRZ 1350 K/V # 9702265
Controller: RO-CONTROL 20A # 9744751
Batterie: RO-POWER 850 mAh/11,1 V 3S 9749045
Airscrew: AERONAUT CAM Carbon 8x4 # 57746
Spinner: CN-SPINNER COOL 30/2,0 mm # 72728
You may use different components, but you have eventually to change the bores in the
motor bulkhead.
The battery should not be larger than:
60 x 30 x 17 mm (high x width x depth)
A capacity of 850 mAh with a 3S Lipo is sufficient for several trials of searches for thermals.
The battery itself is also very quick to change or re-charged.
Screw the motor as shown in figure 14 on the motor bulkhead. Refer to figure 15 for the
positions of the controller and the battery. The motor cables will be guided through the hole
in upper cover – the shrink film must be cut out.
The cable from the controller to the receiver must be guided to the left wing. The power
cable from the controller to the battery must be guided underneath the front connector,
otherwise it would be jammed between the electro-section and the right wing.
If you fly predominant with the electro-section, you may remain it locked on the left wing for
transport.
To connect the right-wing servo cable to the receiver, an extension cable is needed which is
guided through the electro-section underneath the controller.

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Figure 14, Fixation of the motor
Figure 15, Overview of installation of the motorization components

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Before the motor covers will be glued on, a functional check should be done in order to
ensure that the motors shaft turns in the correct direction.
The airscrew must be operating in a push mode. This means that the blast of the airscrew
can be felt behind it when the motor is switched on.
You should fixate the model well on the table for this functional check and ensure that the
airscrew can be move without interfering with other parts or the table.
Caution: The moving airscrew can cause more or less heavy injuries. Fixate the model well
on the table before switching the motor on.
After the functional check has been successfully accomplished, glue the lower and upper
motor cover on. An edge of approx. 3mm which has been considered for cutting out the
cover is good surface for gluing, refer to figure 16.
Figure 16, Fixation (gluing) of the motor cover
With this step, the installation of the motorization parts is finish.
To get the model ready to fly, the right-wing servo must be connected to the enlargement
cable and the battery with the controller, refer to figure 17.

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Figure 17, Get ready for electro flying
Battery and controller
Power cable
Servo cable and
enlargement cable
to receiver

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6. Adjustment of Center of Gravity (CG) and Elevons
The correct adjustment of the CG of a tailless wing must be more precise carried out than at
a normal model with stabilizer. Also, the adjustment of the elevons muss be similar precise
and it must fit to the CG.
The following adjustment is proposed for the first flights in order to learn the behavior of the
model. With this adjustment, the model is very uncritical with respect to stall behavior.
Later, when you acquainted with the model, the CG can be moved more backward in order
to gain more performance. This adjustment is described in a second step.
Generally, the CG adjustments are given for the pure sailplane. They will be checked
afterwards on the electro-glider and usually there are no corrections necessary.
Please note, that the given dimension for the adjustment of the CG refers to the nose of the
pure glider version. If the electro-section is installed, the designation of the CG is referred to
the most forward point of the separation section between the wing(s) and the electro-
section.
The safe location of the CG for the first flights (flying-in) is 160 mm.
Mark this point for the adjustment procedure as it is shown in figure 18.
At this marking the two plywood stripes as they are shown in figure 19 will be fixated with
tape. Drill a hole in each of the stripes and pull a cord through them. A knot behind each of
the stripes ensure that the cord is fixated between the two stripes.
Note that the cord should be strong enough to carry the model.
Tape the stripes as shown in figure 22 directly over the markings and start with the
adjustment procedure.
There will be not more than 50 g of lead needed in order to achieve the correct adjustment.
Use stripes of lead and fixate them in the first step with some tape on the nose, refer to
figure 20.
After you have achieved the correct CG adjustment glue the lead stripes in the very front
region of both wings, refer to figure 21.
The correct location of the CG is achieved when the nose swings slightly downward as it is
shown in figure 22.
Check again after gluing in the lead stripes if this is still the case.

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Figure 18, Marking of the CG location
Figure 19, Plywood stripes and cord as a tool for CG adjustment