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Align 450 XL


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Burgess
Extreme 3D
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Joined: 27 Mar 2012
Posts: 1074
Location: Wales

PostPosted: Thu Nov 05, 2015 9:06 pm
PostPost subject: Align 450 XL
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Align 450 XL

Thought I'd like to build one of these before the parts are no-longer around, some parts authentic Align other generic pattern. Curious to see how the Align 450 XL 90 degree swashplate system works compared to that of the hybrid Walkera/T-rex 450SEV2 main rotor heads on my Walkera Dragonfly 36Bs.

I originally setup the heli with a spare set of three Hobbyking HKSCM9 digital servos for cyclic Aileron, Elevator, & Pitch, these are great little servos fast, however, they suffer a degree of lost motion in the gear train, and on the T-rex XL this has an adverse effect on the cyclic centring, so hence the swop-over to the Emax ES09MD servos.

Emax ES09MD servo Spec:
voltage...4.8/6.0v
Torque....2.3/2.6kg.cm
Speed.....0.10/0.08 s/60 dig
Weight....14.8g

Said to be designed specifically for the T-rex 450 cyclic operation.
There is zero lost motion in the metal gear train.
They're programmable via a PC the Emax servo programmer and not all low-end digital servos are programmable.

http://www.emaxmodel.com/servos/servo-programmer/servo-programmer.html

Motor Walkera RK 400SD (brushed DC)
ESC Walkera
Gyro Assan GA250

I've kept to the all plastic version, simply to see how the whole machine functions.
Flybar control rods are stainless steel, being heavier than the original alloy ones, aides the flybar control frame and paddles to seek perpendicularity to the main shaft. Whereas the flybar weights only effect the fly bar so-to speak from a side elevation, while the SS control rods from an end elevation, and together even more dynamic stability.

I decided to locate the receiver and gyro up front, so only the rudder servo lead running forward. The addition of a ply plate facilitated the mounting for the receiver, gyro, and battery.

Carbon fibre reflexed main blades these are not expensive even so work really well, but getting harder to obtain now.

Decided to set-up on the FS-CT6B TX using my spare RX.

Here's some photos in no particular order.






















May-by able to substitute that coin with Chinese weights on the tail rotor.

Although adding a canopy will require more revision possibly alloy tail gear-box.

Conclusion:
Fun to gather parts to build and set-up, using Align ball-joints in conjunction with these digital Emax servos and 3mm feathering shaft results in no lost motion and very responsive cyclic control.

The degree guide on the frame really useful for setting-up the linkages.

Will obtain a GF canopy may fit an OEM, or may-be tryout my airbrushes.


Burgess
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tombo242
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Joined: 04 Nov 2008
Posts: 4718
Location: Santo Estêvão, East Algarve, Portugal. Now 82, but still feels 22.

PostPosted: Fri Nov 06, 2015 4:06 am
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Looks an interesting set up there Burgess, like the detail you've posted, interested to see just how it works out.

Thanks for a great post as always, Very Happy

Tom.
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admiral
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Joined: 20 Mar 2009
Posts: 1100
Location: Brisbane, Australia

PostPosted: Fri Nov 06, 2015 11:57 am
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Looks like a great job your doing Burgess, the only part I have left of my XL is the Aluminum case that it came in, the rest went a couple of years ago.

Last edited by admiral on Fri Dec 04, 2015 2:57 am; edited 1 time in total
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JensBurger
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Joined: 03 Dec 2015
Posts: 1

PostPosted: Thu Dec 03, 2015 11:33 pm
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Can you please tell me what are the specifications of the this kit?
What are its components of electronics hardware?
Also which MCU it has and which battery it is using?
Can you please tell me the motors for it?

electronics assembly


Last edited by JensBurger on Sat Dec 12, 2015 12:01 am; edited 2 times in total
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admiral
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Joined: 20 Mar 2009
Posts: 1100
Location: Brisbane, Australia

PostPosted: Fri Dec 04, 2015 3:07 am
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Hi Jens, This link will get you the 450XL Manual http://www.atomichobbies.com/assets/manuals/trex450xlhde_manual.pdf it will give you the original specs and recommended electronics, Burgess has chosen different electronics than specified which should be better and has detailed them in his post. The original FX used an 1800 mAh battery but I always used a 2200 mAh in mine.
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