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HomeAircraftHelicopterMain Discussion › Buying used. The most purplexing quirk i've found yet in a second hand heli
11-10-2013 04:55 PM  4 years agoPost 1
devin120

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Canada

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So this is entirely my fault. I did go over the heli and have been flying it like this until yesterday. I guess I need to dig deeper next time.

I was simply tuning the engine, when about 2 mistakes high the heli started rolling and pirouetting out of control.

I hit hold and like a lead balloon FLOP.

I thought it was a boom strike as I have a nick in my boom, or a head grip link as one was missing, I went through about 4 scenerios. Long story short, put it all back together, and go to snap on the servo to swash link, and this is what I find.

How. Why. Unreal.

Miniature Aircraft - OS power - Futaba electronics

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11-10-2013 05:08 PM  4 years agoPost 2
jkurz

rrNovice

Keller,TX

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Looks like someone was testing out their new lighter on tthose links.

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11-10-2013 05:09 PM  4 years agoPost 3
BobbyD2

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Ohio

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Looks like somebody waved a torch over the one side. Perhaps an attempt to loosen them up?. Weird indeed.

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11-10-2013 05:11 PM  4 years agoPost 4
devin120

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Canada

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Im thinking maybe trying to shrink wrap mesh protection to the servo lead while in the heli. Argh. I know what ill be doing today.

Tough cookie took it like a champ though. 1 blade, 1 skid, 1 landing gear bracket.

Built tough.

Anyone want a single edge 693 SE?

Miniature Aircraft - OS power - Futaba electronics

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11-10-2013 05:17 PM  4 years agoPost 5
Santiago P

rrProfessor

South West, Ohio

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perplexing?

Is kind of confusing actually.

You have two scenarios, the damage happened over time and contrinuted to the crash,
or
other component failed, caused the crash, and the ball link shows post impact failure.

Could you share what heli, model and brand, and where/what did the ball link controled?

Is that one ball link or several showing the same kind of damage?

and

When was the last time you inspected the entire heli?

v/r

Santiago

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

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11-10-2013 05:25 PM  4 years agoPost 6
devin120

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Canada

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MA whiplash
os 105 drs
outrage bl 9180
2s direct
gy750
edge 693 se

Perplexing means confusing.

And I inspected it last the day before I flew.

this is not damage caused by wear, nor is it crash damage. This is melted plastic. Its for the servo to swash rod. The end that is in the frame and out of view. "Pitch/aileron" servo

Those are all photos of the same link.

Miniature Aircraft - OS power - Futaba electronics

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11-10-2013 05:49 PM  4 years agoPost 7
Santiago P

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South West, Ohio

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EDIT

so you just missed the sucker have been burned previously?

The burned could have been accidental, maybe with a solder gun, but the burn marks would look different.

Is a shame you did not spot the balllink's condition sooner.

The only other possibility is the link rested on the muffler at some point and that cause the damage.

BTW
I would move this thread to the MA section, so the factory guys can chime in.

Santiago

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

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11-11-2013 01:31 PM  4 years agoPost 8
meowguy

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Saco, ME

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My theory on your problem is this. You stopped at SUBWAY on your way to the field one day and got the foot long with extra oil. At the field you were eating this monster and happened to drip olive oil on that one ball link. Later that day, you put your stuff away at home and left the heli in the garage. Over the next few days, rats or chipmunks were attracted to the smell coming from this strange machine in their garage. They did as they usually do, they started eating.

That my friend is what you have there...lunch for chipmunks that almost killed you or someone else.

"Sweet dreams and flying machines in pieces on the ground." J. Taylor

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11-11-2013 01:46 PM  4 years agoPost 9
unclejane

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santa fe, NM, USA

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Yepper, looks like a heat gun/propane torch accident. He was probably trying to tighten up the links (my Whiplash E had this problem at the swashplate balls) and got too close. Or had been drinking at the time.

I did mine with a heat gun and it was easy to see how this could happen without being super careful...

LS

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11-11-2013 01:47 PM  4 years agoPost 10
devin120

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Canada

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Holy **** I never even thought of that. The number one killer in the sport, oil munks. Bastards. Should have known.

Miniature Aircraft - OS power - Futaba electronics

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11-11-2013 03:38 PM  4 years agoPost 11
rbort

rrProfessor

Franklin, MA - USA

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Excuse the question but
HOW can you buy used and not go through the heli even a basic check and not see the melted link like that?

Not asking you to disassemble the entire heli and put it back together, but at least go through it like a good preflight check to make sure all is OK before you put it up in the air. You at least owe yourself that.

-=>Raja.

MA 1005 Hanson 280, 4210 flts
Spectra 27 3DMax, 3300 flts
Whiplash V1-2 Hanson 300, 1590 flts
Whiplash V2 Hanson 300, 437 flts

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11-11-2013 04:06 PM  4 years agoPost 12
Ronald Thomas

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Gainesville, Fl, USA

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I have to agree with Raja, did you just miss that upon inspection? That seems pretty severe to be missed but I understand as I have missed things too.

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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11-11-2013 04:38 PM  4 years agoPost 13
devin120

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Canada

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Excuse the question but
HOW can you buy used and not go through the heli even a basic check and not see the melted link like that?
Not asking you to disassemble the entire heli and put it back together, but at least go through it like a good preflight check to make sure all is OK before you put it up in the air. You at least owe yourself that.
It certainly is my fault. But i Went through the whole heli. missed it. Everyone does this once or twice. Its hidden in the frame. I owe myself nothing. I went through it properly. Didn't think someone would take a flame thrower to a heli but from now on ill make sure I never buy used.

No its not severe when its rotated the opposite direction you don't see it and its buried in the frame. Its not a raptor lol. Its a whiplash. So just about anyone would miss it.

See the pic, if I had just ****ing popped the link to check. nope this was my dumb ass fault. but you can see from a close look it looked good.

Miniature Aircraft - OS power - Futaba electronics

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11-11-2013 05:05 PM  4 years agoPost 14
Clarence Creer

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Fort Worth, Texas

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To me it looks like that link may have popped off in a crash and landed on the muffler.

Team Kontronik Team minicopter/PeakAircraft
VTeam EvoPowerBattery

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11-11-2013 05:27 PM  4 years agoPost 15
Ronald Thomas

rrMaster

Gainesville, Fl, USA

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I can see how you missed that. Sux man, sorry to hear about the crash

Team MikadoUSA 480XXTreme, 550SX, 600SX, 700XXTreme, 800XXTreme!!

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11-11-2013 05:56 PM  4 years agoPost 16
McKrackin

rrProfessor

Lucasville,Ohio

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To me it looks like that link may have popped off in a crash and landed on the muffler.
Highly highly highly unlikely.

He has the link because it was obviously still attached to the heli.
There is no way it could be attached to the heli and come in contact with the muffler.

When links come completely off,they are very rarely found and they certainly don't just lie loose and ride out a crash sitting on the muffler.

I literally never use the word literally right.

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11-11-2013 05:59 PM  4 years agoPost 17
McKrackin

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Lucasville,Ohio

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And if it was from the muffler,it wouldn't be pitted like that.
It would just be melted.

That damage is from non contact heat...Like a lighter or torch used to tighten links or shrink wrap tubing.

Or possibly a chemical burn from some kind of spray cleaner.

I literally never use the word literally right.

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11-11-2013 06:44 PM  4 years agoPost 18
Clarence Creer

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Fort Worth, Texas

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I agree that it is probably not the muffler. But I do almost always find all of my links in a crash.

Team Kontronik Team minicopter/PeakAircraft
VTeam EvoPowerBattery

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11-11-2013 07:08 PM  4 years agoPost 19
McKrackin

rrProfessor

Lucasville,Ohio

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I have found one out of dozens after a crash.
I don't even look.
If it was yanked off the heli with that much force,it can't or shouldn't be re-used...Not the ends anyway.

I literally never use the word literally right.

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11-11-2013 07:11 PM  4 years agoPost 20
devin120

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Canada

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If it was yanked off the heli with that much force,it can't or shouldn't be re-used...Not the ends anyway.
Good advice. +1

Miniature Aircraft - OS power - Futaba electronics

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HomeAircraftHelicopterMain Discussion › Buying used. The most purplexing quirk i've found yet in a second hand heli
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