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HomeAircraftHelicopterHelicopter Main Discussion › Align DFC head failures ?
10-21-2014 12:59 PM  3 years agoPost 1
MrMaster

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Africa

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Hi all

So I have been warned by some people that I must upgrade my align head to the new align head as the old DFC head has a flaw of braking links on it.

How true is this?

I thought the issues was sorted with the align DFC head. This doesn't make sens to me as all their new models still came out with the DFC head.

any information on this would be helpful.

Thanks all

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10-21-2014 01:43 PM  3 years agoPost 2
datidun

rrElite Veteran

N Ireland

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How do you know the difference by looking at the two heads,what needs upgrading on the head,this is the first I have heard of it,post a PIC of your old head

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10-21-2014 01:54 PM  3 years agoPost 3
MrMaster

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Africa

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Hi

Sorry I was referring to the new EFL head. I have the DFC head, that came with the dominator 700L

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10-21-2014 02:10 PM  3 years agoPost 4
Mahu

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Panhandle , FL

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I have 7 different Align DFC Helis and I have never had any problems out of any of the DFC heads. I have crashed a few times and still no signs of any problems.

What failures have you been told about?

Out of the crowd at the flying field, more than half of the helis at the field are Align and most of those are DFC heads and I have never witnessed any failures and we fly pretty hard 3D.

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10-21-2014 02:16 PM  3 years agoPost 5
MrMaster

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Africa

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my friend had a link that broke on him. The plastic link that goes onto swash. He has replaced his old ones, and first flight he was flying then the next moment he said he got blade flattering.

It wasnt controllable, so he crashed. He says its a flaw in the design, but i disagree.

He was using spin blades 700mm, scorpion 4525 520kw, running 2100 head speed.

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10-21-2014 03:19 PM  3 years agoPost 6
junkpilot

rrVeteran

Alamogordo N.M.

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Defective DFC heads
You may have met one of those people that always blame their equipment regardless of how badly they fly.
Junkpilot

When you fly JUNK it's hard to tell when you've crashed!

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10-21-2014 04:08 PM  3 years agoPost 7
goof2

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Bristol,CT

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When the dfc first came out the plastic link didn't have an aluminum ring at the end for support. Maybe that's what their talking about.

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10-21-2014 04:10 PM  3 years agoPost 8
michael88997

rrElite Veteran

Lewisville,Tx

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there are a few videos of people having their dfc link breaking in flight... however if you factor in the amount of align helis out there with the amount of people reporting a issue its extremely small...IMO you can use either head just depending on which one feels better

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10-21-2014 04:15 PM  3 years agoPost 9
MrMaster

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Africa

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yea, but they did fix the head. I know in the beginning, like 2012 they have had some issues with the head, more dampers though.

Since they fixed the dampers, I didnt hear of an other case.

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10-24-2014 05:35 PM  3 years agoPost 10
wc_wickedclown (RIP)

rrProfessor

long beach calif

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i own 5 dfc heads and have never had a problem and i love them
less parts = faster repairs

Insha Allah made in america

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10-24-2014 08:29 PM  3 years agoPost 11
Jacoub

rrKey Veteran

Kuwait

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I own 3 without any problem

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10-24-2014 09:43 PM  3 years agoPost 12
Mahu

rrApprentice

Panhandle , FL

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I think we can safely say that Align has fixed any issues they may have had with the DFC Head failing.

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10-24-2014 11:27 PM  3 years agoPost 13
NQNA

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USA

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I have owned 6 Align helicopters of various sizes flying with the DFC head. I have never had a problem and really like the low part count, ease of assembly and easy setup..

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10-25-2014 01:18 AM  3 years agoPost 14
MrMaster

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Africa

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Well thanks guys now I can continue to enjoy mine without any worries... Thank again all

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10-27-2014 03:42 AM  3 years agoPost 15
icanfly

rrElite Veteran

ontario

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can't be too light on this, if you bought a first gen dfc from Align you will want to unscrew the bolt going through the link to the grip arm, where the bearings on the link are. You should see the un-threaded portion of bolt extend into the grip arm by 2 or so mm. If the threads are still visible when they are put in the links you have the problem that was upgraded to the bolts that have the un-threaded shaft of the bolt receding into the grip arms. Be careful, all the kings horses and all the kings men.

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10-27-2014 12:59 PM  3 years agoPost 16
MrMaster

rrNovice

Africa

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Thanks for the info

Well maybe that was his case, but still that wasn't the part that broke of his.... his plastic link, connecting the main blade grip to the swash broke, so I think it was a faulty link...

Anyway end of the story is yes, first DFC heads of align had problems, but the new ones has zero problems, unless the user made some oops...

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10-28-2014 01:27 AM  3 years agoPost 17
jschenck

rrProfessor

La Vista, NE.

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The 'design flaw' was the DFC style head doesn't allow the head to teeter with the traditional swashplate.

The DFC design was 100% fixed with the Align swashplate that has the ball links turned 90 degrees. The very first run of DFC heli's that used the swash with the ball links sticking straight out could fail when the head tried to teeter with no mechanical allowance for it.

There was also a short run of 700 DFC's that had a bad main blade grip to control arm bolt - also resolved shortly after the first batch or two run.

I've flown DFC for a few years now including a Trex 800 which I fly aggressively and have REALLY hammered when I've made some flying mistakes (no wrecks though!) - DFC has been working just fine.

The EFL head will allow for lower headspeed without the low headspeed bobble but I've also flown my DFC with lower headspeed without problem.

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10-28-2014 01:38 AM  3 years agoPost 18
payne1967

rrElite Veteran

uk

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you need the fl head
as the dfc is so last year
and align need to make some more money on the head and new kit sales

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10-28-2014 02:39 AM  3 years agoPost 19
jschenck

rrProfessor

La Vista, NE.

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^^ That's kind of funny - because I spent a fair amount of money to upgrade my Trex 500 EFL to DFC, to include the swashplate

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10-29-2014 02:35 AM  3 years agoPost 20
Blax1

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Sydney Australia

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And I'm loving my 500 DFC PRO best thing I ever did.............

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HomeAircraftHelicopterHelicopter Main Discussion › Align DFC head failures ?
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