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Stitch welding?
Slimy38 - 20/7/15 at 05:10 PM

I'm just going over some of the welds that I've missed on my travels. One of them were the double uprights on the seat back (apologies for the camera angle);



I did stitch welding to keep the distortion down, but to be honest I'm almost tempted to leave it as it is. I was also tempted to do the floor and other panels the same way, again to keep distortion to a minimum.

Can anyone see any issues with it, compared to a full weld?

[Edited on 20/7/15 by Slimy38]

theprisioner - 20/7/15 at 05:21 PM

Not sure what an IVA man would think of that?

Slimy38 - 20/7/15 at 06:23 PM

quote:
Originally posted by theprisioner
Not sure what an IVA man would think of that?


Hmmm.... good point.

OK, I've just filled in the blanks on the uprights, it's now one (quite hot) weld. But the floor welds should be ok like that?

Rosco86 - 20/7/15 at 06:39 PM

The double up rights if fully welded to the rest of the chassis on the ends would have 150mm of linear weld, having the best part of 600mm of weld both sides isn't going to make the chassis any stronger I don't think

blakep82 - 20/7/15 at 07:18 PM

well, my car, built as a stock car type chassis by SHP, the rear axle bracket box is stitch welded on. if its good for stock track and Rockingham oval races, i don't see an issue.
if you can fill in the gaps, you may as well really, save an ignorant testers issues with it. if done right, good penetration, it should be more than strong enough though

[Edited on 20/7/15 by blakep82]

dilley - 20/7/15 at 08:33 PM

That photo is more than adequate! I cannot see the weld properly although maybe slightly less wire speed?

[Edited on 20/7/15 by dilley]

40inches - 20/7/15 at 08:43 PM

My MK chassis has a lot of stitch welds, all the steel panels, including the floor are stitch welded, should be more than strong enough.

loggyboy - 20/7/15 at 09:27 PM

Stitch welding is good practice. If a weld starts to crack, it lessens the chance of it spreading along whole of a full length weld.