ZupAir ZULU User manual

1
ZupAir
ZULU
OWNER’S MANUAL

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Introduction
Thank you for purchasing the ZupAir Zulu. This glider has excellent
performance, a terrific speed-range, responsive handling and great aerobatic
capability. A true multi-use glider that can fly well at almost any site with almost
any skill level. The wings can easily detach after flying, making this 1. Meter ( 9
inch) model easy to transport. If you don’t have your Zulu flying already, final
assembly is a breeze, thanks to the molded airframe and pre-assembled
components. We think you will
enjoy whatever you do, with your Zulu!
Specifications
Wingspan 1.5 meters 59 inches
Wing area 36.0 dm2 556 in2
Flying weight 510 gm 18.0 oz
Wing loading 14.1 gm/dm2 4.6 oz/ t2
Aspect ratio 6.35
Air oils Zup1060 and Zup1065
Control sur aces elevons and drooperons
Servos required 2
Skill level Any
Assembly time Less than an hour
Recommended radio gear
Transmitter elevon mixing capability & dual
rates
Receiver standard, 2+ channels
Two Servos Emax ES09MD, ES3352
Hitec HS-65 or similar
(2kg/cm or more torque)
Battery NiMH, 900 mAh square-pack
Other Two 12-in servo extension wires
Contents (Kit and ARF versions)
Wing halves with carbon spars embedded
Fuselage with motor-mount and nosecone
Tail in
Fiberglass joiner rod
Installed control horns
pushrods and clevises
ARF version only: ES09MD servos with
extended wires

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Construction
The Zulu is made of Expanded Polyolefin (EPO), which is a combination of EPP
(Expanded Polypropylene) and EPS(Expanded Polystyrene), giving it structural
rigidity with enough flexibility to resist permanent dents. The Carbon spars have
already been installed and glued in place.
Controls
The Zulu uses four control surfaces that are driven by only two servos. The aft
surfaces are elevons (elevator and aileron), and the forward surfaces are
drooperons (leading-edge droop and aileron). The drooperons give the Zulu a
lower stall-speed, allowing for improved minimum sink-rate and tighter turns.
When inverted, the surfaces deflect the opposite directions, automatically giving
this same benefit. The drooperons also increase roll-rate, prevent tip-stalls and
open up a wider range of aerobatic maneuvers. Tight outside loops, a stable
deep-stall maneuver and an impressive continuous tumble are in the inventory of
crowd pleasers.
Recommended Building Materials
• Glue for servo installation: Beacon's Foam Tac, Beacon's Quick Grip, hot glue
(with glue gun), Homax Welder, UHUpor, -minue epoxy, or other EPO safe
glues
• Glue for fin installation and general EPO repairs: Beacon's Foam Tac
• Small and medium-size Phillips screwdrivers
• Razor blades
• Sand paper
• Small weights for balancing
Warning: This radio-controlled model is not a toy. It is capable of causing bodily injury and property
damage. It is the buyer’s responsibility to build this kit correctly and use it in a responsible manner. Initial test
flights should be made with the assistance of an experienced /C flyer. The model must always be operated
and flown in accordance with the safety standards of the Academy of Model Aeronautics and the Federal
Aviation Administration.

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Assembly
1. Sand the join area to remove mold release agent, then bond the fin to the
fuselage with Foam Tac or other foam glue.
2. The servo pockets were sized for
ES09MD servos, and measure 23 x 12 x
24. mm. If your servos are larger, use
a hobby knife to increase the pocket
size. For smaller servos, fill the gaps
with spare foam, balsa wood, etc.
3. Hook up your servos to your receiver and set the trims on your transmitter to
neutral. Attach the servo arm so that it points away from the wing surface at
roughly 90°, as shown below.
4. Connect the elevon pushrod near the middle of the servo arm, and the
drooperon pushrod one hole above (more travel). Attach the other end of the
linkages to the control horns, using the outer-most holes.
Front
elevon
pushrod
drooperon
pushrod

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. Bend the wire on the pushrods to give clearance between the clevises and
EPO. Remove EPO with a hobby knife if there are clearance issues. Bending
the wire for the drooperons is worthwhile even if there are no clearance issues,
as the bend provides some protection for the servo from drooperon impacts.
6. Twist the plastic clevises so that the elevon and drooperon are approximately
in their neutral positions (0° for level flight). Once the wing is joined with the pod,
you will be able to do this more precisely by aligning the control surfaces with the
pod’s continuation of these surfaces.
7. Using your transmitter, check the deflection of the control surfaces. Typical
pitch inputs should only be ±1 °, and roll deflections of ±30°. The drooperon
should deflect approximately the same angle (but opposite direction) as the
elevon. If this isn’t the case, use different holes on the servo arm or control
horns.
b
end up
trim away
EPO
foam if needed