Air Spring experiences

QUESTION:

Why do you need to level it? A towed item such as a caravan or trailer should be balanced to have about 20-50Kg on the towbar. IOW you should be able to lift it comfortablly without straining, and it should definately notdepress the springs overmuch.

You should be able to pack the camper proper, I've been able to lift with one hand the drawbar of trailers loaded with over 2 tons

ANSWER:

The 2003 Coleman Santa Fe pop-up camping trailer grosses at about 2000 lb (910 Kg) and has a optimal tongue weight of about 10 to 15% (200 to 250 lb or 90 to 114 Kg). Changing the tongue weight either direction outside this optimal range (I'm told) can cause trailer sway problems. Even without the trailer (i.e. just loaded for tent camping) this 4Runner squats noticably even though it has the original towing package (heavier coil spirings on the rear is one item in this package).

I personnally have never seen a trailer with shocks on them. 30-40Kg is fine for a trailer weighing in at 300-400kg (i.e. the average household tailer). tongue weight gets real important when you start talking about short trailers with 4000kg on them (a small skid steer loader for example). the local rental place LOVES to load them right up on the tongue of their trailer.... probably 40-50% trailer weight on the tongue... the trailer tows like crap... when I load the trailer with the loader more on the wheels it tows so much better.


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