Exploding Semi Trailer.

Hello. When I back up too fast and hit the semi trailer with the semi truck, the semi-trailer freaks out and explodes. it works when i back up slowly and not hit it but when i slam into the trailer, it blows up. Sorry about the blurry photo

 

you shouldn't be moving when you hit L to attach trailer.

 

I know. but its a crash physics game. thats what i do i crash cars.

 

When you hit L the game detects coupling nodes an brings them together with exponential force as they get closer together. when you are moving as that happens is causes problems as the game tries to apply very high forces to align the nodes... I think