Hadn't noticed this thread before, it's a good read.
Diesel put up pics of my trailer - now bright bloody red so the tin tops see it.
It is a home made outfit by a guy in Tin Can Bay.
Instead of one big box it is two long ones.
Clever since it still has heaps of space but the centre walls provide stability without a frame. So all up it only weighs 60kg.
Has a single leaf spring and the tyres are run at 10psi.
The guy built an esky into the front and that helps provide some of the extra weight to get the 20kg on the ball.
If that weight is not on the ball the little beggar fishtails around 100kph. Load it right and forget it through until go to jail speeds.
Did a run down to Girraween National park south of Stanthorpe last week loaded up as an experiment. No probs. Even the run through that great stretch from Tenterfield to Casino was fun.
For newbies just watch the braking distance to corners - get on early and then back onto a little power and a good trailer won't be noticeable.
Read something back there abt a trailer being planned - only words of advice is the old :KISS". Every fancy bit of suspension or anything else will just add weight. Designing your own make sure to remember it's going to be pulled and stopped by two bits of rubber the size of your palms.