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HomeAircraftHelicopterMain Discussion › What is "DFC"
09-05-2013 08:04 PM  4 years agoPost 21
qraptor

rrApprentice

Illinois

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Well, DFC is a few bars (links) short.....

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09-05-2013 11:05 PM  4 years agoPost 22
McKrackin

rrProfessor

Lucasville,Ohio

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Just the two dog leg links on the driver....They both are controlled directly from the swash though.

I literally never use the word literally right.

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09-06-2013 05:29 PM  4 years agoPost 23
RAK402

rrElite Veteran

Alhambra, CA

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DFC is one manufacturer's name for their swash-driverless head. It uses rigid linkage from the blade grips to the swashplate, and solid dampers (POM or Delrin-effectively a spacer, as it does not compress), as described above.

The term "DFC" has become a slang term for all driverless heads (like "Kleenex" for tissue, "Coke" for soda, "Xerox" for copier).

All driverless heads are not the same. All driverless heads are not "DFC" heads.

I agree with this statement below (other than referring to the Compass head, which was on the market for several years before the "DFC" head, as a "DFC" head-Technically, it is a Compass/TracX/ "SZ" head ((initials of the designer)):

"You can't use dampeners in a DFC head if you are using completely rigid pitch arms. Compass got it right the first time by using dampeners in the head and using flexible pitch arms. The Avant Mostro follows this trend."

Avant seems to be the only manufacturer, other than Compass, to really understand how the head was designed/intended to work (I am very impressed with that).

I expect that the Avant Mostro head (and the helicopter) will fly extremely well.

Team KBDD/Compass Team Manger/Experience RC/Team JR Americas/WR Field Rep

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09-07-2013 04:57 AM  4 years agoPost 24
helixangle

rrKey Veteran

Mamaroneck, NY - USA

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not to split hairs but where I'm from the term "coke" usually refers to cocaine...

nobody around here drinks soda, that stuff will kill ya, and rott your teeth and give you fat butt, so before you die you'll look pretty bad, haven't you kept up with mayor bloombergs policy?

Be sure the juice is worth the sqweeze
Remember life is hard...even harder for stupid people

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09-07-2013 05:51 AM  4 years agoPost 25
Santiago P

rrProfessor

South West, Ohio

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On the other hand,a traditional FBL head has pitch control links that go from the blade grips...wait....DIRECTLY to the swash.

So I fail to see how one can be called DFC and not the other.
I remember I said the same over a year ago, when the dfc rage began.

At the end of the day, all dfc are flawed in were the control links are stressed and bent putting a side load on thenselves and the swash. Traditional swash driver design is free of this and works perfectly fine. I give kudos to SAB for recognizing the issue and returning to a sound design.

Smart companies will move away or never do dfc.

Santiago

Team Minicopter - PeakAircraft.com
bavarianDEMON- Team Kontronik - Scorpion Motors-

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09-07-2013 07:48 AM  4 years agoPost 26
RAK402

rrElite Veteran

Alhambra, CA

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"not to split hairs but where I'm from the term "coke" usually refers to cocaine..."

I was a bit concerned about that analogy when I used it (good comment).

Team KBDD/Compass Team Manger/Experience RC/Team JR Americas/WR Field Rep

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09-09-2013 03:21 AM  4 years agoPost 27
dodgeguy44

rrApprentice

Alberta, Canada

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DFC = Design Flaw Central

Somebody had to say it! But I have to admit they do fly quite well.

If my wife had another job I'd have more Helicopters

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