Originally Posted by SW RIB Charter
This trailer was brand new and had only had only carried the one boat a total of five miles. It was loaded by QAB, who have loaded numerous boats for me in the past and are always very careful.
Looking at the fairly central position of the axles (see below) and the fact the boat had 2 hefty outboards on the back, I cant see how the nose weight can have been excessive. Even if the nose weight was a bit high, I have towed numerous steel trailers in the past with excessive nose weight and never had any problems.
Hmmm, the plot thickens....
If there are snapped welds the length of the trailer it would suggest to me an overloading problem or a defect in the welding process. Visually the welds look OK from what i can see but visually eyballing a weld is hardly conclusive.
As AMac already suggested, the dimensions of the profiles used dont seem to correspond with a trailer designed to carry nearly 3.5t...
If the trailer is genuinly designed to carry the coresponding load, is it possible it was shock loaded when the boat was loaded onto it?
I wouldnt expect to see weld failures on the swing beam clamp from any kind of cyclic stress as that area shouldn't be flexing as much as say, the main longitudinals....