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5.    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  ±15°,  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.  
 
 

 

bend up 

trim away EPO 
foam if needed 

Summary of Contents for ZULU

Page 1: ...1 ZupAir ZULU OWNER S MANUAL ...

Page 2: ...span 1 5 meters 59 inches Wing area 36 0 dm 2 556 in 2 Flying weight 510 gm 18 0 oz Wing loading 14 1 gm dm 2 4 6 oz ft 2 Aspect ratio 6 35 Airfoils Zup1060 and Zup1065 Control surfaces 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 ES...

Page 3: ...en 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 5 minue epoxy or other EPO safe glues Glue for fin installation and general EPO repairs Beaco...

Page 4: ... 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 t...

Page 5: ...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 15 and roll deflections of 30 The drooperon should deflect approximatel...

Page 6: ... or sand paper file down the ends of the carbon joiners to make for an easier fit 11 Thread the servo extension wires from the wing junctions to the canopy Insert the 6mm carbon joiner tube and slide the wings into the pod 12 Lock the wing in place with a screwdriver If you plan on doing discus launches tape may also be necessary to keep the wings from sliding apart ...

Page 7: ... works nicely to have a regular flying mode where pitch inputs are limited to 15 and an unlimited setting for deep stalls and aerobatic maneuvers Aileron Differential is typically used on conventional aircraft to make the up moving aileron move more than the down moving aileron The Zulu rolls best if the up and down moving elevons move about the same amount You can use the differential setting to ...

Page 8: ... these maneuvers can be spectacular to perform there are some drawbacks reduced control resolution during regular flying extra force on the servos potential for servo slop to initiate flutter at high speeds non optimal ratio between drooperon and elevon travel OR a spring mechanism between the drooperon horn and servo OR two additional servos Tips for a quick 90 setup using ES09MD servos 1 With a ...

Page 9: ...pid rotations Recover by releasing the stick If the approach above doesn t work your servos may be too weak or your elevon pushrods might be bending and limiting the deflection If this is the case here s an alternate approach 1 Gain some altitude then enter a moderate dive around 30 from horizontal 2 Wait a couple of seconds to gain speed 3 Gently pull back on the stick as you would to make a loop...

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