That means that you’ve exceeded the never exceed speed and that you are dangerously overspeeding the airframe.
This is true and normal behaviour for most aircraft I understand. I would expect the aircraft to disintegrate. This is not what is happening here. It justs shakes horribly unnaturally.
Trying it with other aircraft they shake too, but at a much lower frequency, and then disintegrate.
Not this one, it justs shakes at a very high frequency.
To sum it up, and to compare it with an other aircraft for example
With a Potez 25- Climb,
- dive,
- the aircraft starts shaking at low frequency with speed
- aircraft disintegrates
With a Les Mureaux 113/115/117- Climb,
- dive,
- the aircraft starts shaking so much it feels like a cocktail in a shaker, so quickly that it's unnatural
- an then... nothing happens. It justs keeps shaking
If you give it a go I'm sure you'll see what I mean (trying to be accurate on my description of the problem but I'm finding it difficult to explain properly).