Ground resonance. As you spool up, heli approaches frequency of what it's strapped on... If you've lifted off, won't happen. The vibration from resonance backed up to the heli and caused the links to fail and poof.
Well i might be wrong but i think i know what caused this to fail, Everybody knows that when you have a nitro car (Nitro Engine) you might here some people say, dont pick up the car and full throttle it cause your engine will quickly top out max rpm causing the crank shaft and piston assembly to break or get destroyed, cause the engine needs a load on it, now the same thing with this heli, the blades had tremendise forced on the air that the heli wanted to lift up, but like it was held down....
Watching as you spooled up, the heli developed a headshake that was similar to the one it developed as it disintegrated. It's likely the heli wouldn't have blown up as it did if it hadn't been clamped down. The oscillations in the head weren't dissipated as they would be normally and this stress caused the head to come apart. Vibrations from improper set-up to include imbalance in the head are amplified through the helicopter when it is not allowed to "shake them off."
@CreekDevil hey, thanks! The head and blades were properly balanced and found out later that the guy that had it before me dumped it several times due to inexperience and the head had a crack in it! Yes, strapping it down contributed signifigantly to this blowup. As a result of this, I don't strap helis down anymore but if someone has to do this, take the main blades off first and use the turntable to check the gyro only LOL!
Forget the Jesus Bolt & Nut? Always be sure to use loctite on anything that screws in metal to metal... You also have a nice plane in the background, I'm sure you can find some heli flyers to help you out...
@razeyoshi No, didn't forget that - What happened is that there was a hairling crack in the head due to the previous owner dumping the bird then telling me that he never flew it. The head broke during the oscillation and thus this disaster. I have new parts for the heli now, just need to put it back together.
I've watched both parts of your Swift disaster videos. I have had many frustrations with my Swift NX, and feel your pain. I don't know your setup or background with heli's, but the tightness of the main blades is critical on the Swift. It needs to be just tight enough so that if you lean it over to one side and give it a shake, the blades will drop. If they are tighter than that it shakes really bad on spool down. I had been taught opposite with my other heli's.
@fishjunky30 Thanks, I will set them that way the next time. I am going to have parts to re-build in a couple of days and a 3rd bearing block. I am going to re-build the entire head and have everything balanced and new. I will get some videos of it flying (hopefully) soon.
@ctquicksilver Yes it was scary, if I had been behind the camera at the time of "destruction" I would have been seriously injured or worse. I cannot even watch this video anymore. I posted it to warn others not to do this.
Yes that is a Dave Patric extra 330L. It is my pride and joy. Powered by a 52cc Taurus! I crashed it last year but rebuilt it and now it flys even better because it is more ridged now. Check out my other videos on it.
Ohh man i so sorry! but you needed shock absorber for the plataform, the vibration is very strong near the 15000 rpm, regards and good wishes, don`t give up!!
@pochito1810 Thank you, I won't give up - or use the platform again with the main blades on LOL. The platform is great for checking the tail and gyro though.
what you did wrong is you had pitch on the blades you didn't want load on the head then the vibration just helped pull off the head
wcwickedclown 2 weeks ago
wow that sucked ,
KevinMillard68 2 weeks ago
sounds like you have some seriously bad luck with this bird
YupHio 7 months ago
Ground resonance. As you spool up, heli approaches frequency of what it's strapped on... If you've lifted off, won't happen. The vibration from resonance backed up to the heli and caused the links to fail and poof.
oysterlicker 9 months ago
it couldnt lift so the blade assembly gave out and it poped!!!!
NitroExplosion88 9 months ago
Well i might be wrong but i think i know what caused this to fail, Everybody knows that when you have a nitro car (Nitro Engine) you might here some people say, dont pick up the car and full throttle it cause your engine will quickly top out max rpm causing the crank shaft and piston assembly to break or get destroyed, cause the engine needs a load on it, now the same thing with this heli, the blades had tremendise forced on the air that the heli wanted to lift up, but like it was held down....
NitroExplosion88 9 months ago
Watching as you spooled up, the heli developed a headshake that was similar to the one it developed as it disintegrated. It's likely the heli wouldn't have blown up as it did if it hadn't been clamped down. The oscillations in the head weren't dissipated as they would be normally and this stress caused the head to come apart. Vibrations from improper set-up to include imbalance in the head are amplified through the helicopter when it is not allowed to "shake them off."
Glad you're ok!!
CreekDevil 9 months ago
@CreekDevil hey, thanks! The head and blades were properly balanced and found out later that the guy that had it before me dumped it several times due to inexperience and the head had a crack in it! Yes, strapping it down contributed signifigantly to this blowup. As a result of this, I don't strap helis down anymore but if someone has to do this, take the main blades off first and use the turntable to check the gyro only LOL!
Thanks for watching,
J
PC9JEFF 9 months ago
such a disaster, that will get 1 million views...
how come i only see 392?
djjake29 10 months ago
@djjake29 Oh, no worse than your epic fail video that you STOLE to hopefully get 1 million views.
Before you bash someone else, you might want to look into your own first Ha!
PC9JEFF 10 months ago
@PC9JEFF i know. i didn't "steal" it i was sent it, so i put on youtube cos i didn't know that it was already on the net ? :L
djjake29 10 months ago
Forget the Jesus Bolt & Nut? Always be sure to use loctite on anything that screws in metal to metal... You also have a nice plane in the background, I'm sure you can find some heli flyers to help you out...
razeyoshi 1 year ago
@razeyoshi No, didn't forget that - What happened is that there was a hairling crack in the head due to the previous owner dumping the bird then telling me that he never flew it. The head broke during the oscillation and thus this disaster. I have new parts for the heli now, just need to put it back together.
J
PC9JEFF 1 year ago
WoW!!! I say go fly that beautiful plane in the back and be glad you still have a head on your shoulders.
LIPOPILOT 1 year ago
@LIPOPILOT Yeah, no kidding! I won't do this again, that's for sure!
PC9JEFF 1 year ago
I've watched both parts of your Swift disaster videos. I have had many frustrations with my Swift NX, and feel your pain. I don't know your setup or background with heli's, but the tightness of the main blades is critical on the Swift. It needs to be just tight enough so that if you lean it over to one side and give it a shake, the blades will drop. If they are tighter than that it shakes really bad on spool down. I had been taught opposite with my other heli's.
fishjunky30 1 year ago
@fishjunky30 Thanks, I will set them that way the next time. I am going to have parts to re-build in a couple of days and a 3rd bearing block. I am going to re-build the entire head and have everything balanced and new. I will get some videos of it flying (hopefully) soon.
J
PC9JEFF 1 year ago
wow thats scary... especially with carbon blades... like swords coming at ya! Is that a dave patrick extra in background? Nice plane
ctquicksilver 1 year ago
@ctquicksilver Yes it was scary, if I had been behind the camera at the time of "destruction" I would have been seriously injured or worse. I cannot even watch this video anymore. I posted it to warn others not to do this.
Yes that is a Dave Patric extra 330L. It is my pride and joy. Powered by a 52cc Taurus! I crashed it last year but rebuilt it and now it flys even better because it is more ridged now. Check out my other videos on it.
Thanks for watching,
J
PC9JEFF 1 year ago
Ohh man i so sorry! but you needed shock absorber for the plataform, the vibration is very strong near the 15000 rpm, regards and good wishes, don`t give up!!
pochito1810 1 year ago
@pochito1810 Thank you, I won't give up - or use the platform again with the main blades on LOL. The platform is great for checking the tail and gyro though.
J
PC9JEFF 1 year ago
:-(
TheLipRipp3r 1 year ago