Thanks for the link Cully.
My trailer was bought of ebay for £70, used it three years now so not bad. I didn't know at the time the one suspension unit rubber is deteriorated. It was also wired wrong with the brake lights coming on with sidelights and vice versa.
I mainly use it to transport my kart with a few spares in the trailer. I've put a ply top on it which my kart sits on.
I think most the timber is OSB and not great when its wet as the base has started to sag and I fear it would give way if I had anything heavy in there.
The main chassis looks good but the angle that goes around the bottom of the box had broken the other day which I had to weld the day before I needed it. The day I went to bring it back from a meeting I forgot it was hitched, went to reverse, it came round and snapped a trailing arm on it.
I would like to keep it as light as possible and I was thinking about using something like alubond, used some at work before not sure where to get it or how much it cost. Ideally I would like to keep the cost down.
As you can see the arm probably wouldn't have lasted long with all that rust.
The tow bar is all bent over and the damage to the side of my car from the impact.
Had to get it home on my roof bars.
The kart on the trailer, ideally it would be nice it was fully covered but I don't think that will be possible.