Let me be the choosen one...

Falling inverted decent with a hard popping stop at the bottom low over the runway into tic tocs. Never made it to the tic tocs. Blew up like it was shot with a shotgun at the bottom.

This machine was my favorite. 1950 headspeed on vbar gov with stock motor and thunder power 65c. Never any trouble with it until I replaced the head. I must have done something wrong but the head is still well attached, the blades are tight and I can't find anything else that might have contributed.

The grips and main block seemed to survive, everything else on the head is bent or broken and will have to be replaced. Since the links no longer pop off like the standard FBL head it bent/broke a couple of the Aileron/Pitch servo links and stripped the gears out of both servos.

I think I'll stick to the regular head for now. It flew great and never took out a whole heli at least

Xxtreme, TDR, Goblin, 700e, 700n, 6003d, 550e, 450, MCPx
Sponsored by my Visa

Another RIP for Chapin

That sucks Brian

That's no good. I do some things that worry me on the regular head, so I don't thing I'll jump on the band wagon on this one...
Thanks for posting.

ProgressiveRC, Tammies Hobbies

That sucks man, I feel your pain, I just lost $300 work of heli this week.
Align will probably tell you that you were not using FBL blades or some junk like that, hehe. They will have an excuse for why that happened to you, and it would probably be something you did wrong. Dang where is the crash replacement warranty on this one?

Wasn't the talk about these heads that you need to run a higher head speed to prevent boom strike? Like 2100 - 2200?

I remember reading that somewhere here on RR.

Makes sense though, with how low that head is.

Sorry! Mid air boom strikes are insane to see, I saw a Freya Xspec do it once, it just exploded in mid air.

This hobby is like Kryptonite to chicks!

The headspeed cant be an issue by my guess, a video about the new head states like a 2400 headspeed on a 600. I had to stop and replay it to make sure it said "2400" but why so high. Just seems like a boom strike due to flex by the blade tip thru root is unlikely though...bottom line is boom strikes really suck...

showing a preference will only get you into trouble, 90% of everything is crap...

Seriously doubt you did anything wrong setting up...your a pro at it

BrainDrain, how much cyclic and collective pitch were you running? Also, were you using the dampers that came with the FDC kit? They seem soft to me. I went with KBDD lime green dampers in mine.

It is logical to consider that headspeed might be a factor. Higher headspeeds would equate to greater centrifugal force which would tend to increase resistance to blade deflection.

man that sux! spewin

Assumption is the mother of all F#@&ups.....

What length blades were you running. Just curious.

IT's what I do.

Yup, unless your willing to run ultra high head speeds with rock hard dampeners then the DFC head is not a good choice.

Yet a lot of guys will buy them simply because they look cool. How "cool" will your heli look when its in pieces ?

Sorry for your loss.

Im Putting it on my 800 and I will be upping the head speed up form 1650 to 1900 with the green dampeners.

An 800 with 1900 HS is screamin', I know I tried it. Gobs of lift, but flight time was down. That's really the problem with having run high HS, flight time real suffers.

ProgressiveRC, Tammies Hobbies

So are you running this head(DFC with 800blades)? If so what head speed are you running?

No, and I don't think I will. Those big blades are heavy and I worry some with the stock head, even W/O the stock dampers. I'm running 1800 HS, but I think 1600~1700 would be fine and get better FT.

ProgressiveRC, Tammies Hobbies

Ok thanks, I run them at 1650 now. Maybe I'll stay away from this DFC head.

Sorry for your loss, mate!

Machete, don't text!

Could possibly, the horizontal fin have came loose causing the boom strike? Looking at my 700 and the damage to the blades, it lines up with the horizontal fin, and could cause this? It's more common on Logos with the plastic fin mounts but could be the culprit. Sorry to hear about this Brain as you've had your share of mechanical failures, that's why I watch you try new stuff first, LOL. I've got some Align cyclic servos if you want them, you can have them.

Carbon Boom Plus DFC is a Bad Idea

According to Jason Krause the Carbon Boom flexes too much and can lead to boom strikes during hard 3D. I have seen boom strikes with the old flybarless head when running the carbon boom.

The carbon boom is just for "looks" or sport flying.

Running the carbon boom with the DFC seems like a really bad idea in my humble opinion - spread the word

The carbon boom is just an aluminum boom with stickers. I would stay away from this head.

Justin
Aurora, E-Aurora, 700N, Furion 6, 2 raves, trex 250, little helis