Bad Day Yesterday (Question)

That sucks when you see damage after you thought you had it done. Everyone has been there.

 

They usually don't bounce, but it can happen. Most often what happens is a tail drag.

I hit an unmarked frost heave one night in Minnesota. I had plenty of room, didn't think anything of it. Unload the next morning and the dealer starts raising hell about a roof. I actually threw the car back on the trailer and set the deck back down to take this picture:



I think what happened is that after the tandem hit the heave, it compressed the suspension enough to allow the tail of the back bottom to hit the top of the heave. You can see the imprint of the chain barrel on the roof. I still shake my head when I see this pic, and think about how far that car moved.

 

I've had this happen. There was a dip on Interstate 90 N of Chicago like a frost heave and it would launch you into the cab ceiling to break your neck, the same as speeding over humped RR tracks to drag the trailer across. Before quick release ratchets what would happen is the tie down chains and and ratchet dogs would loose all their tension on 'impact', the bump would sometimes kick a dog out loosening the chain.
Even with spring loaded dogs the lower and upper rear positions always seem prone to coming loose, not alot but enough to notice, perhaps because of a whipsaw effect.
The problem is 'I hit a huge bump' isn't a very good cya, at least not more than once.

 

Yes it does bounce
Front of #9 does it in transit.
I have damaged roof because of that.
Ever since I strap it to the trailer frame.