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 Step Thirteen

 
 

Step Thirteen Tail Unit Assembly

  • This step is on page 12 of the Instruction Manual.
 
The parts bag for this assembly. The parts bag for this assembly.
Parts for the tail unit assembly. Parts for the tail unit assembly.
Stock plastic tail pitch control fork (right) with upgrade metal fork (left). I broke several tail pitch control forks on my original Raptor when I was first learning to hover and dragged the tail across the ground.  I finally bought the metal fork which is much stronger and survived the crash.

I will use the metal fork because I have it.

Insert the bearing into the right tail unit housing. Insert the bearing into the right tail unit housing.
Slide the tail pulley and tail pulley flange onto the tail rotor shaft. Slide the tail pulley and tail pulley flange onto the tail rotor shaft.  The flange goes toward the right housing.

My thanks to Emiel Koning for pointing out that I put the tail pulley flange on backward.  If you look at the next image you can see there is a slight taper on one side of the flange.  The taper should be against the gear with the flat side out.

I have to disassemble this unit to correct it so I'll take new photos at that time.

Press the pulley and flange together and line the pulley up with the hole in the shaft.  Insert the pin. Press the pulley and flange together and line the pulley up with the hole in the shaft.  Insert the pin.

Again, the flange is backward and should not be installed as shown.

Tail Pulley and Tail Pulley Flange correctly assembled. This is how the tail pulley and tail pulley flange should be assembled.

If you look at the flange you will notice that there is a long shank and a short shank.

The short shank goes into the tail pulley.

Slide this assembly into the bearing in the right housing. Slide this assembly into the bearing in the right housing.
Set screw to lock pulley pin. This set screw prevents the pin from coming out.
Apply Loctite in the tail rotor shaft, insert the set screw and tighten it against the pin. Apply Loctite in the tail rotor shaft, insert the set screw and tighten it against the pin.
Insert two bearings into the tail pitch control slider. Insert two bearings into the tail pitch control slider.
Slide the tail pitch control slider bushing onto the tail rotor shaft.  Slide the tail pitch control slider onto the bearing. Slide the tail pitch control slider bushing onto the tail rotor shaft.  Slide the tail pitch control slider onto the bearing.
Thread the tail pitch control fork onto the tail pitch control slider bushing. Thread the tail pitch control fork onto the tail pitch control slider bushing.  The bushing has two flats so it can be gripped with an open end wrench.

If you have the metal fork be sure to use Loctite when you thread it onto the bushing.

Tail pitch control links and pins. Tail pitch control links and pins.
Place the tail pitch control links over the fork and insert the pins. Place the tail pitch control links over the fork and insert the pins.  The pins are a press fit.  If you can not insert them by hand, use the plastic handle of a screwdriver or hardwood block to press them in place.  Don't beat on them.  They aren't that difficult to push into place.
Tail rotor hub, tail pitch housings, bearings and hardware. Tail rotor hub, tail pitch housings, bearings and hardware.
Tail rotor hub, set screws and lock nuts. Tail rotor hub, set screws and lock nuts.
Place the tail rotor hub on the tail rotor shaft and tighten the set screws securely. Place the tail rotor hub onto the tail rotor shaft.  The shaft has dimples to receive the set screws.  It is very important that the set screws engage them.

The best way to do it is to insert only one set screw, tighten it until it just contacts the shaft.  Back it off a half turn and then try to rotate the hub.  If you can rotate the hub only a couple degrees in each direction before it hits stops then the set screw is in the dimple and can be tightened.

Insert the second set screw and tighten them both securely.  Be sure to use Loctite on both set screws.

Replace the bearings, add the lock nuts and tighten them securely. Replace the bearings, add the lock nuts and tighten them securely.
Place one tail pitch housing over the bearings. Place one tail pitch housing over the bearings.
Place the mating tail pitch housing on the bearings. Place the mating tail pitch housing on the bearings.
Press the lock nuts into the recesses and bolt the housing together. Press the lock nuts into the recesses and bolt the housing together.

Repeat for the second housing set.

Insert a collar and self-tapping screw into each of the the tail pitch control links. Insert a collar and self-tapping screw into each of the tail pitch control links.
Note that the link is in front of the leading edge of the tail rotor blade.  This is the correct orientation. Note that the link is in front of the leading edge of the tail rotor blade.  This is the correct orientation when viewed from the right side of the helicopter.
Turn the housing upside down to mount the tail pitch control lever. Turn the housing upside down to mount the tail pitch control lever.  Note the small washer.

Thread a ball on the tail pitch control slider.

Insert a bearing into each side of the tail pitch control lever.

The washer goes between the bearing in the tail pitch control lever and the tail unit housing. Insert the collar into the tail pitch control lever.  Note which side the screw is inserted from.

The washer goes between the bearing in the tail pitch control lever and the tail unit housing.

Place the larger hole in the lever over the ball in the tail pitch control slider.  Screw the lever in place. Place the larger hole in the lever over the ball in the tail pitch control slider.

Screw the lever in place.

The top of the right tail rotor housing assembly. The top of the right tail rotor housing assembly.
 
 

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Building the Raptor 30 V2 Helicopter - Step 12
Building the Raptor 30 V2 Helicopter - Step 14

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Copyright 2006 Paul K. Johnson