Luke wrote:Sam_I_am wrote:hmm have to disagree there, not to moan as i love this thread and really envious of the great van you started with and the better van you've created but you definitely need a diagonal brace. Based on the two pics of your welds, I wouldn't trust my life with them and for the sake of a hour or twos work wouldn't you prefer not to kill your passenger? I was always told a pretty weld is a solid weld when i trained and yours look (albeit from a bad picture) a little uneven in places. Again not trying to be rude but would definitely vote for a diagonal brace.
OK "definitely" is a little much but it would be safer..
i'll not keep going on about this - i dont want to mess the thread up but...... a mk1 transit seat is only held in by 6mm bolts they dont need to be strong as the weight of your body in an accident is taken up by the seatbelt mounts - the seat frame and mounts only need to hold the weight of the seat it's self, modern seat frames are much more robust as oftern they have the seat belts mounted to them if that was the case it would need a diagonal
That's my view on it too... Especially as I used 25x25x2.5mm box and I'm fairly happy my welding is up to scratch - it may look uneven, but that's because I kept the 180 amps flowing to make sure it melts deeper than just sticking to the surface.
I have a part of the frame I made up to the wrong measurements (one of the rails on the BMW seat had been bent in transit*), I will see if I can find someone with a hydraulic press who can test how much force it takes to break a weld. Could be an interesting experiment, maybe I can get Myth Busters to have a go
* In transit, probably not a Transit, more likely by the handler...




