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Old 08-22-2011, 10:07 PM   #1
CSpaced
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Default Thunder Tiger Titan X50 - Build Thread

This will be my little informal build thread for the Titan X50 I'll be reviewing. I always take a ton of photos, and can't always squeeze them all into the one review, so this will be where I'll post them!

The Titan X50 was announced at IRCHA last year (2010) and the first version released was the belt driven variant. This is the torque tube version, that was released later, and has a number of upgrades over the original aside from the TT tail. This version has an all metal head, as well as a single piece machined aluminum tail gear box.

You know for years the Thunder Tiger Raptor dominated flying fields and fly ins, until Align released their T-Rex line of helis. With this new design from Thunder Tiger, and with Hobbico now distributing the kit, you can bet that the Titan will give the T-Rex a run for its money!

I'll be running a Redline .56 with O.S. powerboost muffler, GY701 gyro/governor, and Futaba BLS-251 tail servo and 253 cyclic servos. Like Steve (who is doing the Raptor G4 build thread), I also got to drool a little over the X50 at IRCHA and the Thunder Tiger team put on a heck of a show with it. Now that my workebench has been cleared I can begin!

Enough talk, on to the pics!

Cool artwork on the box:


Subdivided Compartments:


Instruction manual (with additional decals in the back):


Goodies to make it go!


All of the major bagged components:




Purty, pre-painted fiberglass caonpy:


Clear, illustrated exploded views showing assembly:




And of course, the X50 promotional video:
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Old 08-23-2011, 08:20 AM   #2
skaluf
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Glad to see you got started on the X50 Chris. I did not think you'd be able to wait much longer .

Enjoy the build!

Steve
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Old 08-24-2011, 01:41 PM   #3
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Thanks Steve, should be a fun one.

Well, after taking a spill on my mountain bike yesterday I now find myself nursing some bumps, bruises, and road rash. What does this all mean? It means more building time!

On to the good stuff....

All of the minor assemblies come in their own, labelled poly bags.


This makes it very easy to find what you are looking for.


First two pages complete! The quality of the aluminum is excellent, and the parts are extremely light!


Flybar control arms.


The flybar already has flat spots ground into it.


The 3D paddles thread on to the flybar, and use set screws through the leading edge to hold it in place.


Head set up, ready for the blade grips!
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Old 08-24-2011, 03:33 PM   #4
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Default X50

Looks just like my Raptor V2, except for about 99% of the parts!
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Old 08-24-2011, 05:41 PM   #5
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Blade grips, washout, swash, all assembled on to the main shaft. One thing I really liked was the dual head bolts (or Jesus bolt), it's nice to have the added strength. I also like that four out of the six pushrods used in the head were molded to size, I only had to make up two pushrods.

Blade grip parts. Note the two part dampers, the black ones are fairly solid, while the red ones are a little softer.




There are two bearings and one thrust bearing per blade grip. The main bearings are already installed, I just had to lube up the thrust bearing and install it. It's important to get it the right way around!


Blade grips done!


That's a sturdy looking swashplate!


This is the upper main shaft bearing holder. Plastic, with aluminum struts.


Completed head assembly. Next up - the tail gear box!
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Old 08-24-2011, 09:18 PM   #6
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The tail gear box went together pretty quickly. There are two spacers included for setting the backlash of the torque tube gears. I ended up using both to get a nice smooth mesh.





On to the side frames!
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Old 08-25-2011, 06:03 AM   #7
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Chris,

Great pics & detail & looking forward to the rest...Brings back memories of building my 50 V2.

Bob
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Old 08-25-2011, 09:43 PM   #8
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More updates. I got the starter shaft/clutch bell assembled, as well as the beginning of the main chassis.

Things I liked:
There are two set screws that match up to two flat spots on the hex starting adapter. This is GREAT. Double the holding power on the shaft means that slipped starting adapters are a thing of the past. Also, the polished aluminum clutch bell is vented for extra cooling.

Parts for the starting shaft/clutch bell.


The starter shaft rides on three bearings for extra rigidity.


Two flat spots and set screws for the starter adapter.


Completed assembly.


Everything completed so far (less the head) including the engine cooling shroud.


Next up, engine assembly!
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Old 08-25-2011, 09:49 PM   #9
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Quote:
Originally Posted by wingspan99 View Post
Looks just like my Raptor V2, except for about 99% of the parts!
Isn't it time for another Raptor video update?

Quote:
Originally Posted by raptorbob View Post
Chris,

Great pics & detail & looking forward to the rest...Brings back memories of building my 50 V2.

Bob
Thanks Bob! I'm amazed at the quality of the kit, so far everything has gone together extremely well, it's really nice to not have to modify parts to make them fit correctly!
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Old 08-26-2011, 08:39 AM   #10
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Amazing amount of engineering. I can't wait to see this one fly!
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Old 08-26-2011, 04:25 PM   #11
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It's now on it's skids with the engine and head installed!

One thing about the engine. It's the Thunder Tiger Redline .56, and it comes with two extra head shims. It says that the engine comes with one, and to use it for nitro content higher than 15%, or in hot and humid conditions. Well, it's hot and humid here, and I planned on running 30%, so which shim to use? There is a shim already installed in the head, which is about .35mm, the two extra are .1mm and .2mm. So for now I'm leaving the .35mm in there, and will see how it performs.

Here's the progression:

Engine and parts!


First things first, figure out which way around to mount the magnets for the GY701 governor.


One magnet positive side down, the other negative (for balance).


I set the sensor gap to about 1mm.


Something I noticed, with the engine mount screwed to the engine, it will sit squarely either right side up or pointed straight up!


Learning from past experiences with the GV-1 sensor, I installed a little heat shrink tubing.


Installed and ready to go.


Skid parts and chassis brace.


Lower brace installed.


It's on it's feet!


Elevator bell crank installed.


Main and auto rotation gears.


One way bearing installed in the main gear.


And here she is with her head on!
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Old 08-26-2011, 04:26 PM   #12
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Quote:
Originally Posted by Unbalanced View Post
Amazing amount of engineering. I can't wait to see this one fly!
Through a video camera?
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Old 08-27-2011, 09:46 PM   #13
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With the winds howling outside from the hurricane, my buddy Bob stopped by and lent a hand with the build. Things go much quicker with a second pair of hands! We managed to get the bell cranks for the aileron and elevator installed, fuel tank, the whole tail system built and installed, as well as a few other odds and ends. The kit is pretty much built at this point, and the electronics are next!

Ironically the hardest part of the build was the small screws that hold the boom supports to the plastic ends. This required pre-tapping the plastic parts to make things a little easier. One things for sure, they are not going to come loose!

Check out that single piece aluminum tail gear box!

A very specific distance was spec'd for the aileron/elevator bell cranks.



Torque tube assembled.


Torque tube bearing installed.


Tail hub built. Each tail blade grip has two standard bearings with a thrust bearing in the center.


Torque tube greased up and inserted into the boom.


Tail section complete.




I used the included shim to get the correct mesh on the gears.


Fuel tanks added, boom supports installed.


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Last edited by CSpaced; 08-28-2011 at 05:51 PM.
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Old 08-30-2011, 03:45 PM   #14
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Sorry about ther delay on any updates, I'm finding it painful to do anything other than sit with my leg up (stupid road rash).

I did manage to start routing the wires for the servos. One thing I am quite impressed with is the s-bus system. I was able to get 3 seperate wires down to just one between the GY701 and the receiver! I am also loving the fact that I can set head speed through the transmitter instead of having to preprogram it on the governor itself - awesome stuff.

Routing the wires has got to be the most stressful part of the build for me. I always want to make sure the wiring looks good, while at the same time making sure that nothing is rubbing where it could cause problems later on down the line. So far I have the rudder and throttle servos routed, as well as the governor sensor, and now I just have to route the cyclic servos! Photos to follow...
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Old 08-30-2011, 09:25 PM   #15
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Ok, wiring is done! The only thing I am not happy with is the wire that goes from the gyro sensor to the controller. It is really long, and I happen to have the sensor mounted right next to the controller. There is so little room between the frames that about the only thing I could come up with was to spool up the cable and zip tie it at the end.

Now that the wiring is done, I can make up the push/pull pushrods, then its on to the programming!

Temporarily running the wires to figure out placement.


Same thing, other side.


Finished wiring, power up test.


Closeup other side.


Overall shot of the right side.


And the left.
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