The Z1 offers outstanding  glide ratio, sink rate, energy retention and handling.  The high performance is achieved through a careful optimization of sweep, taper, airfoil shape and twist.  The smooth finish and custom airfoils provide laminar flow on both the top and bottom surfaces, while still providing forgiving stall and spin characteristics. Thanks to high density foam, carbon fiber and Kevlar, the wing is very light and rigid despite having such a high aspect ratio and thin profile. 


Span: 68 in (1727 mm)

Wing Area: 502 (32.4

All-up-weight: 15 -17oz (425 - 480 gm)

Aspect Ratio: 9.2

Wing Loading: 4.5 oz/sq.ft 

Root Airfoil: Zup03068  (6.8% thick)

Tip Airfoil: Zup04081  (8.1% thick)

Skill Level: Intermediate to Expert

Kit Contents:
(2)  Wing halves.  Sanded and ready to join

(2)  Carbon and fiberglass over balsa winglets

(1)  Fiberglass tow hook

(4)  4 x 10mm nylon screws (for the winglets)

(1)  Black carbon cover for the servos
(1)  Fiberglass cloth for joining the wings
(4)  Fiberglass control horns


The airplane comes with nearly all of the major work done.  Plan on spending a few hours to glue in the control horns, stick in your servos, glue the wings together and bolt on the tips. 



Any transmitter with elevon mixing can work.  However, programmable transmitters make the Z1 easier to fly and give more control options.  For example, here are a few common setups that can be done with a programmable radio:

1.       Flaps can be mixed with the elevons to eliminate any unwanted changes in pitch trim created by the flaps. 

2.       Snap Flaps: Small flap deflections can be linked to pitch inputs to increase the lift generated in turns and loops

3.       Trim settings between different flight modes, such as thermalling and level flight, can be changed with a toggle switch or dial.



The receiver bay is only about 0.5 in (12 mm) thick, so an end-pin receiver works best.  If you are using 2.4 GHz, you'll need to run one antenna up and one down, to get the signal outside of the wing and away from the carbon.  Dual antenna 2.4 GHz receivers work great, such as the Spectrum AR6255 and FRSKY X4R. 



The servos also need to be less than 0.5 in (12 mm) thick, and torque above 15 oz/in.  Hitec HS-55, HS-65, and HS-82 all fit nicely.  An 18-in long servo lead is included, but be ready to do some soldiering during assembly.



The battery bay was designed for a AAA 4-cell flat pack.  The Z1 typically requires around 1.5 ounces of ballast if you use a 2.0 ounce battery.  Since the battery bay is almost at the front of the aircraft, saving battery weight has little impact on the flying weight.  This battery fits nicely: Aloft's 8 V, 900 MAH, AAA PACK, FLAT Link.  If you prefer LiPo, the Turnigy 500mAh 2s pack also fits with room to spare, but make sure you make a spot for a UBEC if your servos or receiver require lower voltage.




Building Materials

15 or 30 Minute Epoxy

Wooden sticks for applying glue

Sharp hobby knife or razor blade

Flat head screwdriver

Masking tape

Scotch tape

3M77 spray glue (optional)

150 grit sand paper

Small weights for balancing