Hyperflight X-res User manual

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Wingspan: 1999 mm
Length: 1220 mm
Profile: AG-Profile modified
Wing Area: 38.0 dm2
Flying weight: from 430 g
Wing loading: from about 11.3 g / dm2
Controls: rudder, elevator, spoiler
Dihedral: 12.0 °
CG: about 73 - 76mm

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The X-RES is a R(udder) E(levator) S(poiler) - high-performance model in predominantly wood construction
with 2m wingspan.
We have optimized the Allegro by Mark Drela using our ideas. It retained good flying characteristics
with practical wood construction.
The following points were emphasized in the design:
• Min sink
• Good high starting heights
• Easy handling, especially circling in thermals
• Consistent braking and steering effectiveness during landing.
The modified Mark Drela airfoil was optimized specifically for rib construction.
The airfoils, coupled with the aspect ratio of 11.6 and almost elliptical lift distribution, makes an
excellent soarer.
I have designed a model that allows long flight times, with the ability
to scan a large area for thermals. At the same time the X-RES, is a
model which the less experienced pilots can learn quickly.
I wish a lot of joy with the model
Alois Janowetz

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2. Building Instructions
General construction
We tried to keep the structure of the aircraft as easy as possible, without
compromising on the performance.
However, it is very important to proceed with the necessary care to build a
straight and high-performance model.
Some modular sheets are for sheeting. Please
cut carefully here so there it is sufficient material for everything.
Separate out the CNC milled parts only when required.
The inner corners radius on parts where the mill stops, have to be reworked
individually.
Bonds, unless otherwise described, thin Superglue, CA, should be used.
Epoxy 5 minute for fuselage / Wing screw connection joiner, Aluminum
tube CFRP link at the Wing.
It is explicitly stated in these instructions, if epoxy or glue should be
used.
If you are faced with unsolvable problems, you can reach me by email.

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Additional Resources / Tools
To build the following tools are required:
• Xacto knife
• Aluminum ruler
• Set Square
• Small handsaw
• Sanding blocks (80, 120, 180)
• Swiss Files
• Pins
• needle-nose pliers
• Cannula for superglue 0.9 mm are available from the pharmacy
• Superglue CA
• 5 – Minute epoxy
• White glue
• Flat Building board
• Sealing iron i.e Monocote Iron
What else is needed?
• Servos e.g. 2 x Dymond D60 1.6 to 2 kg and 2 x 0.5 kg D45 8mm
• Battery: four cells NmH AAA 800mAh
• Receiver: 4 channel as small as possible and reliable
• Covering film: about 2.5 m Oralight.

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2.2 Fuselage construction
2.2.1 Material for the fuselage
1. 3 mm plywood bulkheads for fuselage
1. 0.8 mm plywood reinforcements for sides and bottom of fuselage
1. 2 mm balsa fuselage, bottom and sides
1. 2 mm balsa side and bottom + small parts for the hatch cover
2. Bowden tubes (pushrod tubes)
1. 0.6 mm steel wire pushrod rudder
1. 0.8 mm steel wire pushrod elevator
1. 10 mm balsa fuselage nose pieces
1. 4 mm plywood surface mounting
2. 5 mm plywood adjustable tow hook
2.2.2 Fuselage Construction
First, the CNC milled parts are separated and the webs that hold the parts are trimmed and sanded
flush. Glue the two piece balsa sides of the fuselage and bottom together.
Now the 0.8 mm thick plywood reinforcements are glued to the 2mm balsa sides and bottom using
white glue. The top edges of the balsa and ply reinforcement are flush at the front of the fuse. The
fuselage bulkheads are used to align the reinforcing - not glued at this step.
NOTE:
Make a left and right fuselage side!

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Glue the fuse bulkheads with superglue. Make sure that these are perpendicular to the fuse sides.
Now two 4x4mm balsa longerons are glued in place on each fuselage side. Up to the wing saddle
(bulkhead 5) on top and to the nose on the bottom.
The two long bottom pieces must be scarfed together.
On forward fuselage, the lower piece is flush with the bottom of the 0.8 mm plywood reinforcement.
From the end of the plywood reinforcement, both the top and bottom 4x4 pieces are 2mm in from the
top and bottom edges of the sides. The top and bottom sheeting fits inside in this space later.
Assembled bulkheads and 4x4mm balsa longerons.
Use a spacer with 2 mm offset to locate the longerons.

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Taper the longerons at the rudder cutout so the back end of the fuse can be glued to the rudder.
Now the pushrod housings are sanded with rough sandpaper and run through the bulkheads, but not
glued.

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Next, the fuselage sides are glued together. Make sure they are parallel.
Before the frame is bonded at the end of the plywood reinforcement, insert the wing retainer.
Insert the 4 mm sheet of plywood with the 5 mm threaded hole toward the front of the fuselage.
Do not glue yet. That is glued later on, when the wing adjustment is made with the locking pin
Now the pushrod housings can be glued to the fuse bulkheads.
Ensure the housings are as straight as possible. It is recommended that the steel pushrods be inserted to
help straighten them. A slot still has to be cut into the side wall for the rudder pushrod housing.
Now the fuselage top is glued. The elevator pushrod goes through the elongated hole in the fuse top.

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Fuselage top with pushrod housing shown.
Glued fuselage bottom.
Finally, the adjustable tow hook and the balsa nose are glued with white glue.
To accommodate trim weight, the nose can be slightly hollowed.

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Wing retention system
(I built the wing first because of this step). If the wing locating dowel is not installed, drill a 5mm
(0.196 diameter or # 9 drill) hole in the leading edge and install the locating dowel at the center of the
wing.
Insert the wing into the fuse saddle, thread the nylon wing retention bolt into the plywood retainer
plate, and put the 3mm plywood wing locating piece on the dowel and in the fuse. Measure the wingtip
to back edge of fuselage and make sure the distance from each wingtip to the fuse end is the same.
Make adjustments to the hole in the plywood piece if necessary.
When wing is lined up, glue the ply wing locating piece in the fuselage. Remove the wing and
reinforce glue the wing retaining piece in the fuselage.
The wing retaining piece in the fuselage.