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Thunder Power RC . Real Raptors . Mikado Modellhubschrauber

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Main Discussion > Safe distance between u and heli.
 
 
evilone
Heliman
Location: Melbourne Australia

Took a few Heli,s for a fly last sunday.
Fired up the rappy 50 was hoovering 15-20 feet from the ground when all of a sudden a loud whoosh and the heli fell like a stone to the ground i swear it had been shot out of the sky.
Killed the motor wanderd over to find one blade less heli on its side 50 odd feet either side i found the blades both still had the grips attached and one still had the spindle bolted on. upon inspection the bolt holding the blade grip on had pulled out of the spindle, threads and all.
Now i dont no how far away from your heli you blokes stand but im never 50 or so feet away when hovering.,so how lucky can ya get that i didnt wear one of these blades as an xpensive carbon fibre head dress. They shot out so quick i truely did not see them exit the head and would of had no chance of avoiding it had it came my way. Im tiping the spindle threads were to blame. it had 1.4hrs of flight time on it. Had no vibration or indication something was not right.
I assembled the Heli myself and the bolts were never cross threaded and were loctited and had never been undone since assembly. Even the best maintained Heli can hurt ya.

So whats a safe distance to be standing from ur Heli????

It went where??? Oh up there!!!!!!!!
03-17-2005 Over year old.
 
 
playfair
Key Veteran
Location: Rochester, NY

That's a bummer, glad noone got hurt!

I try not to fly with the blades pointing at anyone when close!

Perhaps you over-torqued the spindle threads? It's easy for even the best "heli maintainers" to go over-board trying to be thorough...


The sky is our canvas
03-17-2005 Over year old.
HOMEPAGE  
 
 
Leif
Elite Veteran
Location: Oxford, PA - USA

Well, AMA guidelines now state that nobody should be within 30-feet from a model aircraft in flight.

Not that anyone has paid attention to that, and it certainly does not get you out of the lethal radius for a thrown blade.

Either you over-torqued the bolt, or there is a possibility that either the spindle or bolt were defective from the get-go. While rare, it is possible to have a defective part get through the manufacturing process.

Life is full of risk. Just remember, the further away you are the less statistical chance that you'll be in the exact path of the missle.

Leif
03-17-2005 Over year old.
 
 
Cicolli
Senior Heliman
Location: Perth, Western Australia

Hi Evilone,

could you post some pics of this incident. I have never heard of this one happening to a rappy 50.

Paul.
03-17-2005 Over year old.
 
 
Diesel_1
Heliman
Location: Covington, GA

How high was the head speed, and were the thrust bearings greased? Just curious, I am glad no one was hurt. I am guilty of standing to close to mine. But only after several test flights, hard ones.
03-17-2005 Over year old.
HOMEPAGE  
 
 
Gary
Veteran
Location: Crosby, Texas

I had to duck a broken blade the other day and it hit well over 50 feet from me. It's hard to say what a safe distance is. At eye level hovering I'm not sure 50 feet is really enough. The Fun Fly's are great but it's rather nerve racking with up to 8 or so helis in the air at the same time. You have to concentrate on your own machine so much that there is no time to react to a problem someone may have close to you.

"Who said obsession was a bad thing"
03-17-2005 Over year old.
 
 
jknoell
Senior Heliman
Location:

How close probably also depends on the heli... I can't see anyone being too far away from these micro helis. I sure am not far from mine (usually around 10 feet). If I fly indoors it's generally a lot less

However, I can see how that'd be an issue with CF blades and high headspeeds, even with micros.
03-17-2005 Over year old.
 
 
Gary
Veteran
Location: Crosby, Texas

I would imagine that at 2000+ rpm even a plastic disc could do some serious damage.

"Who said obsession was a bad thing"
03-17-2005 Over year old.
 
 
r1gga
Senior Heliman
Location: Canterbury, UK

Micro Heli Danger

I had a broken sleeve on a hummingbird cyclic paddle, but decided to keep on using the paddle... untill it shot off and made a nice big hole in my sofa. I wouldn't have liked that in the eye!

r1gga
03-18-2005 Over year old.
HOMEPAGE  
 
 
helitubbie
Senior Heliman
Location: Dartmouth. Devon. uk

I always avoid hovering at head height when the model is close

I hate checking my tracking, my imagination runs through what could happen!
03-18-2005 Over year old.
 
 
evilone
Heliman
Location: Melbourne Australia
This is it u can just make out the striped threads
Cheers. Evilone

It went where??? Oh up there!!!!!!!!
05-13-2005 Over year old.
 
 
MJWS
Key Veteran
Location: Airdrie, AB - Canada

The good news is with a little luck your blades are still ok. But they usually send half the bearings flying as well. Blech.

Had the same thing happen to me once, but didn't strip the spindle. That one gets the evil eye and a TON of locktite on my birds.

I keep my headspeed down while in close. Never get in line with either disc. 30ft minimum. My H2 gets flown a little closer, but even the little suckers can bite ya.

Mike
05-13-2005 Over year old.
 
 
SkateFreak
Key Veteran
Location: Cambs UK/Luton

yeah, see
i think this is where my flying techniques fataly flawed...
i used to fly close... all to close, almost close enough to reach out an grab my 30
But yeah, i'v never had a failure but the more i fly the more worried i get so i'm getting to a safer distance these days...
I think its all part of learning, there's just this strange thing where i always felt i had better control closer (and generally do) but thats only because the things literaly stearing me in the face and i was always to scared to fly off a little incase i lost it...

A little experiance down the road and i now realise just how dangerous this was, Being new and not having anyone experianced to look over the heli failure was more likely than ever there!
Now i feel i have more experiance and can set up/maintain the helis better... but they still scare the heck out of me...

Have had a thrown tail blade pass my head by about a foot and a lead weighted wooden blade tip pass my head mid crash...

Dangerous things people, even if it is just a 30 with woodies... if anything woodies are more dangerous as they disintegreat and a boom strike pretty much launches the lead tips!

jst a few thoughts lol...

-Jvr

Non-3D heli pilots are planker spys trying to bring down the heli community from the inside - Topher
05-13-2005 Over year old.
 
 
paramedic
Senior Heliman
Location: Wichita, Kansas

Two words...Foo Shield
05-13-2005 Over year old.
 
 
SkateFreak
Key Veteran
Location: Cambs UK/Luton

two more!
Am-en!

Non-3D heli pilots are planker spys trying to bring down the heli community from the inside - Topher
05-13-2005 Over year old.
 
 
webbhost
Key Veteran
Location: england - Leicester

Quote 
The Fun Fly's are great but it's rather nerve racking with up to 8 or so helis in the air at the same time. You have to concentrate on your own machine so much that there is no time to react to a problem someone may have close to you.


Damn just imagine a flying blade distracting 8 pilots from their precious helis shops gonna say hi to $$$$$$

meh
05-13-2005 Over year old.
HOMEPAGE  
 
 
MattJen
Elite Veteran
Location: UK,Gravesend, Kent

In the uk the FAI square for beginners and competition hovering manouvers is the helicopter is 10 meters, (30feet)
and the skids for all manouvers at eye level (which means the blades are above head height)

Anyfurther away and you risk loosing orientation when you are beginner, and of course as you prgress into circuits then distance within reason doesnt beomce too much of a worry.

I bought mymother in law a chair for xmas, but she would not plug it in.
05-13-2005 Over year old.
 
 
jackheli
Elite Veteran
Location: Vancouver - Canada

A safety precaution I always take is to only hit idle up (higher rpm) when the helicopter is way above my head. Those extra 300 rpm could make an already failing part a goner...



Anyone who has never made a mistake has never tried anything new - Albert Einstein
05-13-2005 Over year old.
 
 
thieving hobbit
Heliman
Location: Berkshire-England

My club has 2 clearly defined 'safety' distances:-

When other heli pilots flying- 30 feet
When plankers (thats plankers) flying- 30 inches

Should be helis only come the summer

<<<<<Is That All You've Got?>>>>>
05-13-2005 Over year old.
 
 
Luckylandings
Veteran
Location: Oregon USA

Boy that's an understatement!
And I read today about a poor guy getting hit with a 1/4 scale.
Then everyone starts talking safety. AMA this, AMA that, they are going to regulate this, we will loose our rights, etc, etc.
Then you see this type of thing. Not just the plankers either...
I have seen a few heli tail tugs..

Make sure you scroll down for both pictures..

http://cgi.ebay.com/ws/eBayISAPI.dl...&rd=1&tc=photo:




..........................
05-14-2005 Over year old.
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Main Discussion > Safe distance between u and heli.
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