Gallery, Projects and General > How do I??

Bend 3/4 bar cold

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RussellT:
Hi All

I spent an hour and a half this afternoon wrestling with the anti roll (sway in US) bar on my car before taking it completely off to try and work out why it didn't want to go on.

The attached picture shows the bar.  The ends should be same distance from the bottom of the picture.

I could force it into place taking advantage of the compliance in the rubber bushes.  In fact I think that's what I must have done last time I took it off.

As this is a spring heating it will lose it's temper and make it useless.

I think the sharp bend at the right side of the picture needs tightening up.

Any suggestions?

Russell

hermetic:
 Can you get a ratchet strap on, IE fit one end then ratchet strap the other into position. The problem is, if the bar is the wrong shape, the rubber bushes will be destroyed very quickly, did this bar come off the car, or is it a replacement? These bars are really tough, I don't think you will be able to bend it, and heating is a no=no too!

hermetic:
just another thought, are any of the mo0untings at the front adjustable, or can be made so? it does look if there is not enough bend on the right side, but if you ratchet strap the ends together, it is more likely to bend in the centre of the front portion, which masy not matter?

chipenter:
I have had to support the hubs on axil stands to fit an anti roll bar , as the suspention is narower fully extended .

one_rod:
The simple answer, if it was made from mild steel, would be to hold the long centre section in a solidly-mounted vice, as close to the start of the bend as possible. Slip a six foot length of 3/4 steampipe over the free end and just "persuade" the thing back into shape.

However...
The fact that this is made from spring steel, and has clearly been stressed past it's Yield Point once, is bad enough. You stressing it back past the point in the opposite direction does not bode well for it's future. Fatigue failures in medium carbon alloys can be sudden and unpredictable.

Unless you have some way of doing a proper NDT on it, you really ought to consider it to be scrap, and look at replacing it.

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