Oliver Flugmodellbau FRESH Instructions for use

FRESH
Sail flight model for F3-RES
Span: 2000 mm
Wing area: 35,6 dm²
Weight RES: from 435 gr.
Weight E-RES: from 465 gr.
irfoil: G36mod/G37mod
Web: www.oliver-flugmodellbau.de Email: [email protected]
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Construction manual
(2016 ugust 28th, Oliver Matzen)
Notes before construction work
Because of the simple construction, it is possible to produce the model very quickly.
Only little grinding work is required.
To build the model you need usual model construction tools:
●Balsa knife,
●Sanding block with sandpaper 100 and 400 grid,
●Jigsaw with metal blade,
●File, rasp,
●Drill,
●Pliers,
●Scissors,
●Needles, clamps and weights,
●and a balsa plane is also useful.
n even stable board approx. 30cm x 100cm is required as construction pad.
For a finish with covering film is an iron, a pair of scissors and a sharp razor
necessary. long steel ruler is helpful.
For the assembly and finish you need:
●Superglue low viscosity appr. 20 gr and activator,
●5 minutes epoxy,
●Wood glue,
●Covering film appr. 2 m*0,6 m,
●Scotch tape 15 mm wide
for flying you need:
●a remote control with a minimum of three channels
●2 servos appr. 10 gr
●1 Servo appr. 5 gr
●1 small receiver
●1 receiver battery
●1 servo extension leads
Slightly trim weight may also be necessary and tape is required to secure the outer
wing.
For the high Start a suitable high starting rubber with cord, ground anchors, ring
and a little flag is used. The launch system will develop no more than 4kg force.
(Vendors for bungees are e.g. www.setatech.de, www.emc-vega.de,
www.hobbyking.com (the blue)
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Construction is fun but keep in mind:
●You are resposible for your own healthiness.
●almost all adhesi es contain sol ents an other olatile substances,
care for adequate entilation!
●Be carefully in the use of superglue! Fingers and eylids are glued
together faster than you do not mind!
●The processing of CFRP caused finest coal dust which must not be
inhaled or swallowed!
●Wash your hands when coal dust adheres to your fingers!
●Do not blow the coal dust from the building board, remo e the dust
with a acuum cleaner!
●Note the operating instructions by the manufacturers and suppliers.
●Handling tools can cause injury.
●Operation of an Aircraft model can cause accidents.
●Construction and operation of a flight model must be learned.
●For beginners, it is necessary that an experienced person helps.
●For damages and accidents that will arise in connection with the
construction and operating of the model, "Oli er Flugmodellbau" do
not take any resposibility.
.... and here we go with building fun!
Construction of horizontal stabilizer (ele ator)
Separate components with a sharp balsa knife from balsa and connection webs
remove from the components (little grinding).
Stuck together and stick together. Use superglue in order to save weight.
Leading edge and tip grind around. Tail edge grind tapered.
Planing in the hinge region with the balsa plane at 45 degree.
The control horn is glued with superglue after ironing the covering film.
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Construction of ertical stabilizer (rudder)
Separate components with a sharp balsa knife from balsa and connection webs
remove from the components (little grinding).
Stuck together and stick together. Use superglue in order to save weight.
Leading edge and tip grind around. Tail edge grind tapered.
Planing in the hinge region with the balsa plane at 45 degree.
The control horn is glued with superglue after ironing the covering film.
Construction of the tail boom
Elevator support stick together of two balsa parts. Then grinding a trough according
to the 12mm tail boom diameter. If something goes wrong during grinding, don't
worry, the kit contains additional support parts.
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Place the support centered under the tail boom and measure at the tube ends the
same distance to the building board. So it is checked that the trough was grind
parallel to the top of the support.
Tail boom sanded before bonding in the area of the support with 400 grain
sandpaper and remove the sanding dust.
Stick the support with 5 minute epoxy to the tail
boom. The two holes in the support are in alignment
with the two holes in the tail boom. Push the fixed
front part of the rudder into the slot of the tail boom.
Vertically align the tail edge of the rudder to the tail
boom.
Stick the "Fresh" rudder with superglue into the tail
boom.
Superglue activator ist helpful in this case.
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The layer of plywood which is glued to the elevator support is first screwed with two
M3 metal screws (not included in the kit) and the plastic nuts to the elevator.
Use M(etric) 3mm*20mm metal screws, which can be easily unscrewed after
gluing. Later during flying use the plastic screws to save weight.
Press the elevator to the support to transfer the contours of the nuts on the
suppport.
ccording to the footprint of the nuts on the support edit the support with a balsa
knife to get space for the nuts in the support.
Before gluing the plywood layer and the nuts with the support, check the right
angle of the horizontal and vertical stabilisator.
If it is not rectangular, you can grind the surface of the support and corrected it
accordingly.
Glue the plywood with 5 minute epoxy to the support.
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The elevator-support is fixed with 25gr/m² glass fabric strips in addition to the tail
boom.
Grind the tail boom in the area of the glass fabric with 400 grain sandpaper and
remove the sanding dust.
To glue the glass fabric use thin superglue.
First fix the glass fabric near the top of the balsa support with superglue. Then drag
the tissue around the tail boom and soak it with superglue.
Construction of the fuselage
Glue the fuselage formers, servo plate, wing screw and ballast carrier with wood
glue or super glue together.
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For the electric glider version 4*4mm triangular strips (approx 4-5 cm long each)
are glued to the stringers.
fter the formers and other internals are dried, glue the 4*4mm Balsa stringers
with wood glue into the fuselage.
In the area of the wing leading edge the stringers are overlapping. Grind the top
stringer to fit the airfoil shape.
The hook board is glued together of two parts.
The board is not neccessary in the electric
glider version.
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Glue the hook board with wood glue between the lower fuselage stringers.
Glue balsa sides of the fuselage with wood glue on the plywood sides
The upper and lower fuselage planking is made of 2mm balsa. Cut 3cm wide strips
from the 2mm balsa sheet.
The wood grain of the fuselage planking is transverse to the direction of flight.
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For the cockpit cover the 2mm Balsa planking is cut out wider as the fuselage
(approx 4cm). Glue the plywood reinforcement in the center of the plating. Stick
the carbon flat profile only on the first 3 cm into the slot and strengthen the glue
area additionally with a little glass cloth. The glass cloth can be glued with thin
super glue.
In the glider ersion, before gluing, the plywood reinforcement is slightly
narrowed to the front (red lines), so that the plywood fits between the
upper stringers.
The fixed plywood tongue over the lid to the left and the flexible carbon flat over
the lid to the right.
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