Originally Posted by OldCoot
If the axles are aft of the centerline, the majority of the weight is between the axles and the tongue unless I misunderstand the meaning of aft.
I apologize, I should have elaborated. You understand my use of aft correct sir.
In an effort to help salespeople sell TT's easier(can be towed according to it's empty weight by a larger variety of vehicles), manufactures seem to be doing everything they can to keep the tongue weights low (light). It seems to me as though they aren't putting the axles far enough back, and putting the majority of the permanent weight behind the axles. Not to the point that it will sway violently from being too tail heavy, but enough to highly encourage porpoising.
I think that installing shocks as recommended by OldCoot would be the best starting spot.
I guess to sum up my thoughts -
1 no air spring assist needed on your new van, it's not close to being taxed.
2 vans are rough rides, typical bumper pull TT's accentuate any bouncing or hoping
3 I probably wasted a lot of your time with my rambling to get to this point, I'm sorry
4 Shocks on the TT or more weight up front are probably the only thing to slow down your bouncing.
5 if you add weight to the back of the van instead of the front of the trailer, you'll probably just get into your overload packs and the bouncing will be more harsh