Trailer Advice

[Wood Butcher]

I'm after some advice on metal sizes for a trailer that I am starting to build. The trailer will be 7' long and 4' wide based on the "Nathan" trailer that the old boy has. I have the sheet metal sides already folded up and the floor cut to size.
What I am wondering is the wall thickness of the RHS for the sub-frame and the drawbar. The sub-frame RHS will be 35mm square and the drawbar 65x35mm (I think). I will mainly be using the trailer for hauling rubbish to the tip and for carrying all of our camping gear when we go away (maybe a canoe too), so I have no plans of being able to carry huge heavy loads.

Any recommendations would be appreciated as I hope to start to gather materials in the next couple of weeks.

[Grahame Collins]

If you use anything less than 3 mm thickness it will be a PITA to weld.
Trailers that where never meant to carry more than a "X" load always seem to get lent to some one intent on destroying the unit.Always build 50% better than you need. Cheapskate on materials and you will pay for it later,
trust me!
cheers
Grahame

[Schtoo]

Ditto what Grahame said.

Also, if it's possible, try and get some shockers under there too. Makes a huge difference under light loads. I wouldn't have thought so myself till I drove a dinky 6x4 that had some dampers under it when it had nothing on board, and when it was loaded. Thing was just planted to the road all the time.

[soundman]

Make sure you make the tray at least 1240 wide inside.
Much better for getting sheet goods in.
cheers