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HK-450TT PRO V2 Flybarless 3D Torque-Tube Helicopter Kit (Align T-Rex Compat.)

HK-450TT PRO V2 Flybarless 3D Torque-Tube Helicopter Kit (Align T-Rex Compat.)
HK-450TT PRO V2 Flybarless 3D Torque-Tube Helicopter Kit (Align T-Rex Compat.)

Our most popular HK450PRO helicopter kit now offered in a flybarless torque tube version!

HK-450TT PRO V2 Flybarless CCPM 3D Electric Helicopter Kit (Align T-rex Compatible). Modeled on the famous and proven Align T-Rex 450PRO V2 Flybarless helicopter kit.
Take a close look at the head and tail of this awesome machine. It's ultra light, yet rigid design is strong enough for even the most skitzophrenic of 3D helicopter pilots!

When comparing helicopters, carefully look at the tail and head unit. Our 450PRO V2 Flybarless is FULLY 'PRO' and does not use parts from previous models.

*Now featuring an upgraded metal tail slider and tail slider control arm!

• Newly designed low wind resistance flybarless rotor head assembly with reduced distance between rotor head and frame, effectively lowering the CG for better 3D performance.
• Single piece integrated design of main bearing block and servo mount.
• Single piece integrated design of anti-rotation guide and gyro mount.
• Single piece integrated landing gear.
• High precision flybarless head system.
• Newly designed high resolution swashplate.
• Single piece battery mount with integrated canopy mount designed to bring CG closer to disk plane.
• Highly rigid frame with single piece carbon side and bottom plates.
• Highly efficient shaft driven tail design.
• Weighted tail rotor blade grips to repel centripetal forces.
• Straight-up in-frame alloy rudder servo mount for improved geometry and better CG.
• Newly designed aerodynamic canopy.
• Newly designed high strength main blade grips.
• Upgraded metal tail slider and tail slider control arm.


Length: 635mm
Height: 230mm
Main Rotor Diameter: 710mm
Tail Rotor Diameter: 158mm
Motor Drive Gear: 13T
Main Drive Gear: 150T
Autorotation Tail Drive Gear: 106T
Tail Drive Gear: 25T
Drive Gear Ratio: 1:11.5:4.24
Weight (w/o power system): 530g
Flying Weight: Approx. 640g

HK450TT PRO V2 FBL Helicopter Kit
Glass Fiber Main Blades
Tail Blades
All Necessary Hardware

Required items:
Brushless Outrunner Motor
Flybarless Control Unit
Lipoly Battery (2200mAh 3S)

PRODUCT ID: 155000030

This product available from a warehouse near you!

Weight: 997g
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Price  $62.99

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Further discounts available for registered & logged-in customers.
 Customer rated
Total of 134 discussions.
daniel_ionut  3 points - 3/11/2015
Bought this kit couple of months ago as my first 450 sized helicopter. Great kit, all the parts were OK. Here is a flight
daniel_ionut  3 points - 3/11/2015
Bought this kit couple of months ago as my first 450 sized helicopter. Great kit, all the parts were OK. Here is a flight
Anggih  4 points - 3/4/2015
i bought this kit with some disappointed, some ring i cannot find it, where i can buy screw set for this thing,
Peter  1 points - 2/2/2015
Can anyone confirm how the one way bearing holds up in these also tail and main gears on this helli. Is there any parts that need to be upgraded?
 hawko 19 points
One way bearing good only had to replace one and I fly every day 7 to 10 battery's and yes you will need to replace main gear unbella gear and tail gear with align or what I done was a belt conversion kit but still a great cheap heli my favorite bird to fly
j_keiter  7 points - 1/25/2015
My tail rotor has around 5 degrees of CCW tail rotor pitch when all arms are adjusted perpendicular and slider in in centre of possible range. I have verified blade grip directions compared to align 450 photos. Only thing I can think is wrong is shaft length is too short. I measure 47mm. 50mm or more would fix problem. Can someone measure there torque tube tail rotor shaft length for me to confirm 47mm is stock/correct. Thanks Jason
 hawko 19 points
Yes 47 mm
 Andre 1 points
I have axactly the same feeling as j_keiter. The shaft looks too short. Altough the heli flyes very good.
 Andre 1 points
I reversed the grips. It is fine now. Look it up at google. Easy fix. Great heli btw. I love it.
 j_keiter 7 points
Andre, I did try reversing the blade grips and that did correct the tail rotor slide range issue, BUT, unfortunately it also reversed the tail rotor direction and the fly-barless stabilization system only permits servo transmitter stick reversing not Gyro reversing so now the heli would turn in the right direction but the gyro was backwards. If I had belt driven I could reverse belt but since I have torque tube my only option would be to change Fu-Bar stabilization system orientation which was not possible to due software settings only allowing 3 possible orientations. So in the end I suspect the HD450 Pro Torque Tube heli fly's with an extremely off centre slider range that may not be noticed as there is enough range in the short slider direction to still turn with authority. I googled for 15 min and could not find a tail rotor blade grip reverse method that works in my situation eg. torque tube, fly-barless stabilization. Thx though. Appreciate any help:)
 hawko 19 points
Hi j_keiter not sore why you reversing ya tail rotor as you need the leading edge of the blade to be traveling up in to your main rotor wash what to do set tail servo to 90 degrees turn ya gain down or switch to get your fbl unit in rate mode fold tail blades together so you look down on them as one then adjust your linkage to get 16mm cap to the right witch mean the slider will go to the left then go back to head hold mode and if you can put same pre-comp on tail I'm running 10% and my tail works perfectly hope this helps
 j_keiter 7 points
hawko, My tail blade direction is stock again as the fbl stabilization system did not provide gyro reversing. I'm almost following what you are saying. "adjust your linkage to get 16mm cap to the right" does cap stand for capacity? Is the 16mm referring to the folded tail blade tip movement range? or slider movement range? I have not even messed with pre-compensating the tail rotor to sudden change in collective torque yet and did not think to till you mentioned it. I'll try the 10%. Thx!
 hawko 19 points
Yes the 16mm cap is the tip of tail blades and when you set pre-comp on tail make shore that that when you work positive Pitch you get your tail slider going left witch is putting a little right rudder on if it slider goes right then you are putting left rudder on that won't work so good in my case I had to go -10% to get the correct way of travel and that all depends on witch way your servo is hope this helps
 Andre 1 points
j_keiter, Sorry to hear that didn't work out for you. My blades are still spinning in the original direction. I only had to reverse the gyro at the stab-system and the rudder channel on the transmitter. But if your gyro settings does not allow it to reverse then it's a dead end I guess. Btw, the align 450 has the same problem. So it is not just this one. I am very happy with the modification. The range is perfect now and also stable at rate mode within mili seconds from startup. Although I think the range from stock is enough, this gives me a better feeling about it. P.S. I googled "heli tail Grip Flip"
Customer Reviews
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This kit is excellent value for money. The new head is smooth and works well. The swash is very good and smooth, The tail has a new type slider on it and mine has no slop, a first on this size of heli, the tail holders seem to have a counter weight system built into them. I am amazed at what you get for the money. The blades that came with mine are good quality and usable.The torque tube seems a good quality unit and the drive is free from friction and hopefully static. All in all I am well pleased with the kit and look forward to getting it in the air.

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got this today, it is such a difference to my HK450 V2, looks ace. Te screws are a lot better than on the v2 models. The FBL head looks also better than the one I have for my v2 but I did not fly it yet.

I'd prefer if they would include a glass fibre canopy but will just get one with my next order.

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Finished the kit assembly and have now flown around 15 flights, sport flight and a lot of flips/inverted/rainbows/loose tictocs/punchouts etc Quality overall is pretty nice and looks great in black, one carbon frame half is rattier than the other (as usual with hk) but the mechanics of the frame, head and most of the tail are really solid. Head is rigid with no slop and feels nice and high quality. The all metal tail slider mech is a nice touch although the one problem I've encountered so far is that the brass tail slide bushing broke in half during the first test hover meaning the tail control arms weren't in contact with the slider anymore. Lost tail control in a low hover because of this so watch out. Never had this problem on other clone 450 tails so hopefully it's just my particular part that was a dud. Other than that the heli is great and flies insane with the following loadout. Tarot/HK ZYX 3axis flybarless controller TP 450-Size 2415-06T Brushless Heli Motor 4400kv get this motor it's awesome (13t pinion = insane headspeed power no bogging at all at 12 degs pitch) Hitec HS-65MG on cyclic (very nice, smooth and powerful although corona 919MGs would work as well for a lot less) HGD digital 261HB for tail Hobbywing Platinum/Turnigy K-force 40amp esc Orange Rx Sattelite Nanotech 3s 45-90c 2200mah lipos (5mins flight if doing 3d type headloading continuously and everyth

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the quality is amazing. the head has absolutely zero slop in it, is very rigid, and smooth moving. i can tell it will be great for 3D. i still need to check for WARP in the gears but the tail gears came slightly warped, a few teeth are stripped at the root and is not smooth at all. yours may come without it bent like that, but the hk helicopters usually just need align gears and youre good. the TT gears are usually soft and would not recommend flying if they dont seem in perfect shape. to be honest, i did not like the 450 pro i got last year but this one looks like a step up. will be using my zyx and nano techs!

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- The carbon fibre frame is a little bit rough on the edges. Need a bit of sanding. Appear not as well made as HK450 V2 frame.
- The flybarless head looks very well made. The swashplate is very good, tight tolerance, not as loose as V2 swashplate.
- Torque tube tail end is good too.
Can't wait to fly it !!

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