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Photos and Movies > Nitro 50 explodes on film...
 
 
outhouse
Veteran
Location: auburn ca

My Posts This: Topic  Forum

im with tankdirt

you can see the majority of the canopy at 1:15 if that proves anything.

the frame dissintagrated and was busted almost instantly as it ate itself But i could see at 1 point before the canopy hit the ground the frame was already in pieces.
10-27-2009 04:50 AM
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Carey
Veteran
Location: Allentown, NJ USA

My Posts This: Topic  Forum		It would be somewhat funny if he had a sniper neighbor with a grudge.

The shot came from right behind the mainshaft in my opinion.
10-27-2009 05:09 AM
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jackheli
Elite Veteran
Location: Vancouver - Canada

My Posts This: Topic  Forum		^^ +1

It's hard to see the light when the fridge door is closed
10-27-2009 06:47 AM
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fiveoboy01
Veteran
Location: Waunakee, WI - USA

My Posts This: Topic  Forum		I remember seeing that one quite a while ago.

I dont think it was hte canopy going into the blades. Could have been a boom strike, could have been a blade breaking from overspeeding or too much stress at the root.

There's a better vid out there, I have searched and searched and can't find it now, but some guy tethers his raptor 30 or 50 to the ground inside a fenced in area of his backyard, the heli gets away from him and ends up exploding, nearly hitting the guy. Bonus points for anyone who can find it

Mikado Logo 400, hopefully ready by spring.
10-27-2009 09:11 AM
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Dood
Elite Veteran
Location: WI

My Posts This: Topic  Forum		Was that the one with the bungee cord hooked to the landing skid?
10-27-2009 09:13 AM
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fiveoboy01
Veteran
Location: Waunakee, WI - USA

My Posts This: Topic  Forum		I don't know. If I recall correctly the canopy was yellow and the pilot was a Mexican. He was standing "not too far" away with the transmitter then the incident occurred. The fence surrounding the area was like one of those wood-plank types that would be 7 or 8 feet tall. At least from what I remember from seeing the vid(which was a long time ago).

Mikado Logo 400, hopefully ready by spring.
10-27-2009 09:18 AM
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Thomas Moore
Senior Heliman
Location: California

My Posts This: Topic  Forum		I think that in the first video, there are a vast plethera of options as to what happened. My guess is that it was either an improperly tightened spindle bolt (I.E. New guy doesn't know to use two wrenches at the same time) or the upper Jesus bolt wasn't tightened (as the head came up under load more negative pitch was added. <-- I don't think it was this one though. Blade failure is a definite possibility.

The fact that both blades dissappeared instantaneously makes me think that it was indeed the spindle bolt.

Team Avant
10-27-2009 09:21 AM
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Avropilot
Veteran
Location: Murfreesboro, Tennessee

My Posts This: Topic  Forum		It's the famous raptor woof & poof. I've seen at least 10 of these incidents and one was mine. Do a search on it as theres lots of speculation on what causes it and it happened mostly on the V1 but the v2 has the potential to do it too.

Waiting for parts
10-27-2009 12:41 PM
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Optech
Key Veteran
Location: San Diego, CA.

My Posts This: Topic  Forum		I agree with a blade, blade grip, head failure.

I've seen it happen on a Century heli only it was in the air. After finding all the parts it was obvious that the blade bolt or grip failed on one blade as it was found intact very far away from the crash site. Half the bolt and half the blade grip was still attached. The other blade slammed into the tail boom. All that energy coming to an abrupt stop and being displaced into the boom, ripped the heli apart and threw pieces all over exactly like in that Raptor video.

Mike

Viva La Airtronics!
10-27-2009 02:07 PM
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jgunpilot
Senior Heliman
Location: Pollock, LA

My Posts This: Topic  Forum		The blades look like woodies, so that leades me to believe maybe he didn't epoxies the root pieces properly.
10-27-2009 02:17 PM
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azrc_pilot
Heliman
Location: Seria, Brunei

My Posts This: Topic  Forum		Look at the smoke carefully, the smoke must be goes down instead of goes up. This means that the pitch was reversed...!!

AZRC
10-29-2009 06:15 AM
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rotaryfalcon
Senior Heliman
Location: Social Circle, Ga. USA

My Posts This: Topic  Forum		This is similar to what happened to a Pantera while hovering at about 15 ft. of altitude. Before it hit the ground it had shed the entire tail boom assb. the canopy, battery tray, battery and receiver, and the fuel tank. It literally exploded! After much wreckage examination, one blade(carbon fiber) was found to have delaminated at the trailing edge. There is so much energy stored in the blades that when something like this happens the rest of the heli basically absorbs the energy (virbations) and dissapates it rater quickly and spectacurally!
10-29-2009 05:37 PM
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budz
Heliman
Location: las vegas

My Posts This: Topic  Forum		i'll go with tankdirt

i was thinking that the pitch was reversed so when he applied more throttle, the blade got closer to the boom.

if it were the plastic grip failure, i think that the blades will be thrown sideways.

if it was the jesus bolt, then the entire head block would have flew by itself. i've seen a video of this.

but honey, the TX says it can store 30 models. i only got 5 on it now.
10-30-2009 03:34 AM
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misskimo
Key Veteran
Location: Alaska 14 years, before mississippi for 31 y

My Posts This: Topic  Forum		well I think it was in the drive train and the ole plastic sorry azz Rappy frames just could stand it with alittle neg pitch that was there. yep , crappy rappies! ones thats following their foot steps is elyq

Team X-Era ,Team ThunderPower, & Spartan Gyros
11-01-2009 08:22 PM
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JasonJ
Veteran
Location: North Idaho

My Posts This: Topic  Forum		I'm not buying the too much negative collective theory. The smoke stops being drawn up through the rotor just before the explosion, which looks to me like it was around 0 degrees at the time of failure. You only have to watch it a few times to see it. There is also not the noise that is generated when you give a buttload of negative on the ground. To me it looks like good old fashioned woody blade failure or spindle failure. At least he managed to not have a runaway engine....
11-02-2009 12:18 AM
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krashtagain
Key Veteran
Location: ohio

My Posts This: Topic  Forum		You guys are all so wrong !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!





















At the very same time the Craptor exploded this happened .














That was the cause of the Craptor exploding .

If you're not living on the edge you're just taking up space !
11-02-2009 12:24 AM
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A. Bundy
Elite Veteran
Location: Aurora,IL. 30W/SW of Chicago

My Posts This: Topic  Forum
Quote 
The smoke stops being drawn up through the rotor just before the explosion, which looks to me like it was around 0 degrees at the time of failure.
I agree.
11-02-2009 12:44 AM
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misskimo
Key Veteran
Location: Alaska 14 years, before mississippi for 31 y

My Posts This: Topic  Forum		yeh! it does look like it was feathered! but it wasnt the blades, it was internal explosion , gear train

Team X-Era ,Team ThunderPower, & Spartan Gyros
11-02-2009 02:30 AM
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crcflyer14
Senior Heliman
Location: dallas

My Posts This: Topic  Forum		I've seen this before!

Blades on backwards!!

It acts fine till you input just enough pitch and it goes HARD over. Looks like this case it went into Negative: HARD. My buddies went into positive HARD, shot up like a rocket ripping all links off. nice soft field it landed in with minimal damage. It took us a while to wrap our heads arround what had gone wrong.

His was a rappy also. he was messing with the flip grip mod and got mixed up!! HAHA
11-03-2009 12:25 AM
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