Blow up at start-up :)

[Devrim]

Hi.

 

While starting engine if you release start-engine button at 19-20 RPM (gas producer tachometer), Huey is shaken very strong. After rotor stop if you try this a few times somehow you can explode helicopter.

 

I prepared a video (2 minutes).

 

Is that a kind of bug or can it be done in real life?

 

Thanks.