Originally Posted by JoeC (Post 2852856)

I read it that he could see seam welding working on a track car but as unproven snake oil on a DD.

Originally Posted by mav1178 (Post 2852874)

If one were ONLY stiffening the chassis and not doing anything else with it, i.e. drive it on a public road, then yes, I would agree with your statement. But since OP is asking about a DD, then your statement is wrong for all the reasons already listed.

If one gets in a wreck with a seam welded chassis, the impact would easily overwhelm your stock seatbelt + airbag's ability to protect you. You would need to reengineer the entire safety system to compensate for much higher G-forces in an impact. Even a 15MPH impact can kill you.

Plus, the "unproven snake oil" part mostly revolves around the change in crash characteristics of the car. Plus, once you stiffen the car you change the natural harmonic frequency of the car, thus introducing the "unproven" part of the problem.

-alex

Originally Posted by stevesnj (Post 2852881)

The reason i said Snake is is because this car wasn't designed as a rigid body. You start messing with the structure like that and it will be less safe and advertise the shops that did the work then it's all just a gimmick to me. I just think this is a bad idea and unsafe and unnecessary and moronic on a DD car.

Originally Posted by JoeC (Post 2852894)

I still don't understand what I've said that's wrong, hahha. no worries. I'll just keep reading like a normally do.:thumbup:

Originally Posted by wparsons (Post 2852723)

There's also a lot of other points of deflection before the chassis is the weak link, so unless you've replaced ALL the rubber bushings with bearings there's still something MUCH easier to do to improve feel and suspension precision.