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next to the fuselage.  Finish up by putting hinge tape along the top of the hinge to seal 

the entire length of the hinge.  Do the same for the wing/aileron assembly. 

 

When you are not participating in a class race event, you may find other motor, 

propeller and battery combinations that provide faster speeds. 

 

The BLUE RAY is a capable aerobatic airplane.  A rudder servo could be added to make 

it a full-house setup.  This will add weight and provide no real advantage in pylon 

racing.  If you want a hot sport flyer, add the rudder servo.  Make the rudder about ¾” 

wide, cut from the vertical stabilizer as the ailerons were done.  Mount the rudder servo 

on the fuselage top next to the vertical stabilizer.  You may need to add some nose 

weight to get the CG in the proper location. 

 

Conclusion: 

 

This kit is intended for class racing where piloting skill determines the outcome more 

than the airplane.  The motor and propeller selections were made to provide good 

performance for pylon racing at a low cost.  We hope you like flying your Blue Ray 

Racer as much as we liked flying ours. 

 

Stats: 

 

Finished weight without battery is 8 to 8.5 ounces (228 to 240grams) 

Battery weight for 2-cell 1000 to 1300 mAh Li-Po is 2.2 to 3.0 ounces (62 to 85 grams) 

Battery weight for 3-cell 1000 to 1300 mAh Li-Po is 3.0 to 3.8 ounces (85 to 110 grams) 

 

Total flying weight: 

w/ 2 cell Li-Po = 10.2 to 11.5 ounces – 290 to 325 grams 

w/ 3 cell Li-Po = 11.0 to 12.3 ounces – 312 to 350 grams 

 

Wing Span: 

24 inches 

Wing Area: 

174 square inches 

Wing loading:  8½

 to 10¼

 oz / sq ft 

Airfoil: 

Semi Symmetrical 

Total Length:  28 inches 

 

Motors: 

 

The recommended 22 mm stator diameter outrunner motor is more than adequate.  

See the web page for a list of potential motor suppliers.  For non-completive flying, a 

larger diameter motor has more torque and will fly faster.  Just be careful not to add 

too much weight. 

Summary of Contents for Blue Ray

Page 1: ...m Qty 1 Fuselage Top Qty 1 Nose Top Qty 2 Ply Fuse Doublers Qty 1 Ply Firewall Qty 2 Dowels Qty 1 Plastic Hood Scoop Qty 1 Aileron Drawing Qty 2 Nose Doublers Qty 2 Rear Dowel Doublers not shown in ph...

Page 2: ...imple to build club project Micro servos receivers and electric motors are available at very affordable prices Now is the time to start club pylon racing The completed weight of the BLUE RAY is 8 to 8...

Page 3: ...in assembling the aircraft Do not remove the plastic film from these parts until you have made the appropriate cuts Tip Rounding the leading edges of the horizontal and vertical stabilizer and the fu...

Page 4: ...ewall and dowels If desired glue the doublers in place making sure the holes for the hold down dowels are lined up The finished inside width in the nose is 1 If your battery is wider than this you may...

Page 5: ...s Horizontal Vertical Stabilizers Cut the elevator free from the horizontal stabilizer along the line drawn on the stabilizer Cut a 45 taper into the leading edge of the elevator You can rough cut the...

Page 6: ...place and connect it to the servo arm with either 032 or 042 diameter wire with a Z bend at the servo end and a keeper at the elevator end Wing Before working on the wing make sure you have correctly...

Page 7: ...nnection Install the ailerons using your favorite hinge method Again use sealing tape to seal the hinge area Drill holes for the aileron control horns and glue them in place Connect the control horns...

Page 8: ...t connection of the ailerons to the receiver use two 3 servo extensions The removable wing provides access to the battery so make sure you have enough slack in the aileron wires to allow the battery t...

Page 9: ...can be built with a single aileron servo and torque tubes The double servo arrangement is shown in the instructions because it s easy to install The Du Bro micro control horns and keepers are inexpens...

Page 10: ...ng where piloting skill determines the outcome more than the airplane The motor and propeller selections were made to provide good performance for pylon racing at a low cost We hope you like flying yo...

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