I bought the trailer with chains attached. If I put crap shackles on thats my problem. The chains are the manufacturer's problem. I am not educated enough to warrant the effectiveness of said chains. Use rated shackles.
Some how I don't think it's the manufacturers fault.
It's been done to death a million times, probably more than the great D shackle debate, but here it is again........
All pig trailers with rigid drawbars (with or without breakaway brakes—but excluding converter dollies) and, any other trailer without breakaway brakes, must be fitted with safety chains that are marked in accordance with the relevant Australian Standard and (or cables as applicable) complying with the following:
trailers that do not exceed 2.5 tonnes ATM must have at least one safety chain complying with Australian Standard AS 4177.4-1994 or Australian Standard AS 4177.4-2004 ‘Caravan and light trailer towing components —Part 4: Safety chains up to 3500kg capacity’, or be a safety cable with a certified load capacity of the same;
trailers over 2.5 tonnes and not exceed 3.5 tonnes ATM must have two safety chains of designation of 3500 kg complying with Australian Standard AS 4177.4-1994 or Australian Standard AS 4177.42004;
Shane.