Help with TF2 Bomb in Map?

[j0sh77]

In my map, I have a button in the middle building that drops a bomb on the skybox... I want it to fall faster and explode when it hits the ground... I don't know why it isnt working???
Here's a video of what I have (at 0:37 it goes to what i have in hammer)
I took the bomb from this map.

 

[tschumann]

I'm not sure, but don't .mdl files have a mass associated with them? Maybe you could increase this somehow and see if it falls faster.

 

[j0sh77]

I'm not sure, but don't .mdl files have a mass associated with them? Maybe you could increase this somehow and see if it falls faster.

I increased the mass by 5 and it didn't speed up at all... Anyone know how to make it explode when it touches the ground?

 

[j0sh77]

Anyone?

 

[tschumann]

I'm not sure, but maybe use some of filter_ entity that triggers an explosion when it detects the bomb.