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Old 04-12-2017, 07:53 PM   #1
JetPlaneFlyer
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Default ALZRC Devil 420 FAST - build log

I got a nice surprise yesterday, those nice people at BangGood asked me to do a build review of the new ALZRC Devil 420 FAST So I've not got the kit yet but it's sitting ready to ship in my BangGood account, so hopefully it will be here in a week or two.

This is the heli for those who havent seen it before: ALZRC Devil 420 FAST at BangGood

The Devil 420 FAST is basically a stretch of the Devil 380 FAST, which in turn is a clone of the Goblin 380. Despite being a 'clone' these helis have a reputation for being great quality. The stretch to 420mm blades makes it about the same size as the Trex 500.

I've not made my mind up on build spec yet but the ALZRC motor and servos look like great value so chances are that's the way i'll go.

Motor: http://www.banggood.com/ALZRC-Devil-...l?rmmds=search
Swash Servos: http://www.banggood.com/ALZRC-DS452M...l?rmmds=search
Tail Servo: http://www.banggood.com/ALZRC-Devil-...l?rmmds=search

ESC I'm not sure on, I think the Hobbywing 60A that commonly gets fitted to the 380 may be a bit on the small side for the 420, so maybe the HW 80A would be the ticket? FBL might depend on what i can get hold of at a good price but a Kbar is the fallback option.

A quick pic:
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Old 04-12-2017, 10:18 PM   #2
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Interested to hear your qualified thoughts on this. Congrats on being selected!
I have a set of their DS501MG servos in a 58" Edge and am impressed by the fit, finish, price and performance.
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Old 04-13-2017, 07:51 AM   #3
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Thanks for the interest.. Some people will never like this heli purely because it a 'clone' of the SAB Goblin, but if you can get part that I've heard only good reports. The quality by most accounts is just as good at the Goblin. Anyway, my report will be an honest one, if it's got faults I'll not hide them.

It's smaller than the helis I usually fly but it might turn out to be the ideal size for a heli to throw in the back of the car and take flying in my lunchbreak.
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Old 04-24-2017, 08:43 PM   #4
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So here we go with the build

For those of you who have forgotten what the thread is about, those nice people at BangGood gave me one of the new ALZRC Devil 420 Fast heli kits to do a review of
This is the heli: ALZRC Devil 420 FAST at BangGood (please click the link as it tracks and shows the guys at BangGood that that these build threads generate interest in their products so they might give more people here the chance to review)

The kit took ten days to arrive which wasn't at all bad considering how far it's had to come. It was well packed in protective foam and lots of labels as proof of it's world tour:


Under the foam packaging was the box, which looks spookily like the box of a certain heli brand I could name :


Inside are found another three boxes, so everything is well protected:


The boom, tail pushrod and blades are found in the first of the two skinny boxes. Quality of the boom is flawless and it's made out of carbon rather than glass fibre, so nice and light.


The blades are nice too though there was some very minor fuzziness of the masking lines, purely cosmetic and nothing I've not seen on high-end expensive blades.


In the second skinny box was hardware such as the alloy frame plate, motor mount, heads, swash, pulleys, main shaft and it's bearing housing, tail assembly etc. The quality of these parts looks absolutely top notch:


The heads and swash are loosely pre-assembled but these will of course need stripping and reassembling with grease and Loctite as per normal practice:


And finally the big box which contains the canopy and the main frame components along with canopy edging rubber, battery straps etc:


The canopy like the tail boom is flawless, the white colour is pearlescent metallic and looks really good:


I couldn't resist taking a pic of the canopy alongside my spare Goblin 700 Speed canopy for an idea of scale:


So all in all I'm extremely impressed so far. The only flaw of any kind I can find is the slight fuzzy edge on painting of the blades, but that's nit-picking. It is worth noting the obvious absence from the kit... NO MANUAL... This comes as no surprise to be honest, i guess the intent is that the builder uses the Goblin manual.

That's the unboxing done, so watch this space for the build starting proper
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Old 04-24-2017, 08:43 PM   #5
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PS.. Today i ordered all the remaining hardware that I'll need. The build spec will be as follows:
  • FBL: mini Vbar on Pro firmware
  • Motor: ALZRC 1000Kv
  • ESC: Hobbywing Platinum 60A V4
  • Swash Servos: KST DS215MG V3
  • Tail Servo: KST DS565X
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