Thunder Tiger Raptor 30 V2

Thunder Tiger Raptor 30 Radio Control Helicopter

May 02, 2015



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Airfield Models (http://www.airfieldmodels.com/)Building the Thunder Tiger Raptor 30 V2 Helicopter Steps Sixteen and Seventeen

If you're at this point and you haven't charged the batteries for your radio yet, then get them on charge because you'll need the radio soon.

 
 

Step Sixteen Servo Installation - Part 1

  • This step is on page 14 of the Instruction Manual.
Note that the balls are mounted to servo arms and the throttle arm using machine screws and hex nuts.

Be sure to Loctite this hardware so it doesn't vibrate loose.

Use a good quality tape to secure the lead to the bottom of the aileron servo. Use a good quality tape to secure the lead to the bottom of the aileron servo.  Be sure the lead isn't strained where it exits the case.
 
Parts bags for this assembly. Parts bags for this assembly.
Servos and a tail boom mount for the tail rotor servo. Servos and a tail boom mount for the tail rotor servo.  This is the only upgrade I suggest for your heli.  When I built my first Raptor there was too much drag in the stock setup.  The setup is essentially the same in the new Raptor so I didn't even attempt to use it.

If you want to use the stock setup then you're on your own because it will not be covered in this article.  I'm sure a lot of pilots have gotten it to work fine.

Mount the switch first while it's still easy to get to. Mounting the receiver switch is actually part of the next step, but it's easiest to install before the servos so go ahead and install it in the molded mount on the right side of the servo frame.
Servo mounting screws. Servo mounting screws.
Mount the aileron servo to the top of the collective pitch control arm. Mount the aileron servo to the top of the collective pitch control arm.

All servos mount with the output shaft toward the rear of the helicopter.

Make two 73 mm aileron linkages and connect them to the aileron servo and the aileron control levers. Make two 73 mm aileron linkages and connect them to the aileron servo and the aileron control levers.

This is when I realized I had mounted the aileron control levers with the balls on the outside instead of the inside.  Instead of changing the location of the balls I simply swapped the levers.

Mount the elevator servo in the top opening of the servo frame. Mount the elevator servo in the top opening of the servo frame.

Make the 86 mm elevator linkage and connect it to the elevator servo and the elevator control lever.

If you use a tail boom mount for the tail rotor servo mount it well forward on the boom. If you use a tail boom mount for the tail rotor servo mount it well forward on the boom.
Carbon fiber tube tail rotor pushrod. You'll have to make a pushrod the correct length.  I used carbon fiber tube with threaded rod epoxied into both ends.
Another view of the tail rotor servo, mount and pushrod. Another view of the tail rotor servo, mount and pushrod.
 
 

Step Seventeen Servo Installation - Part 2

  • This step is on page 15 of the Instruction Manual.
 
Make a 75 mm pushrod and connect the servo to the throttle. The throttle servo is installed on the left side of the frame in the lowest hole.

Connect a ball to the servo arm and the throttle arm.

Make a 75 mm pushrod and connect the servo to the throttle.

Ray Hostetler's book covers throttle linkage geometry in detail and is suggested reading.

Make a 51 mm pushrod and connect the pitch servo to the collective pitch control arm. The pitch servo goes in the second hole from the top on the left side of the frame.

Screw a ball to the servo arm.  Make a 51 mm pushrod and connect the pitch servo to the collective pitch control arm.

At this point all the servos should be installed and all linkages should be connected.  Note that the length of the linkages given in the manual are starting points.  The output shaft of your servos may not be in the same location as the servos used when the helicopter was designed.  It is almost 10% that you will need to adjust many of the linkages to get the correct control geometry of your helicopter.

 
 

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Building the Raptor 30 V2 Helicopter - Step 15
Building the Raptor 30 V2 Helicopter - Step 18

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Copyright 2006 Paul K. Johnson