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snapped sway away
narumi - September 10th, 2013 at 12:49 AM

Finally had time to pull suspension apart after the going going over a dip on the road
initial thought was yes, snapped torsion bar
but can't be coz they're 4 months old swayaway 27mm 24 11/16"

is this common for swayaway or did I carry too much weight..
in need of harder shocks or some sort of suspension limiter?
or was this a manufacture defect?
not that I can claim on warranty since CB stated "all parts as is"


1303Steve - September 10th, 2013 at 08:36 AM

maybe too much travel?


vlad01 - September 10th, 2013 at 09:17 AM

take close up pics of the breakage and post them. Might be able to see if its a defect or not.


I personally never heard anyone breaking a torsion bar til now.


GottaSplit - September 10th, 2013 at 09:23 AM

Someone with a bit of metallurgical nous might be able to tell by the breakage pattern. Vlad could be your man ;)


Camo - September 10th, 2013 at 09:35 AM

Yes I agree with the above, some close up photos as stated above. From the photo it doesn't appear to be a stress (twist) fracture, but a failure.

Even still, you wouldn't be able to get it replaced as you pointed out. Buy something else and move on, but it would be nice to know if they are defective for others.

Kev


vlad01 - September 10th, 2013 at 09:57 AM

+1, I would be worried about using them if it was a defect.


matberry - September 10th, 2013 at 10:50 AM

In all my years of fixing/playing with Volksies, I've seen one old Sway-a-way broken and 3x VW (two kombi and one beetle) break. So it's not unheard of, just not too common. What is the car/application?


AA003 - September 10th, 2013 at 11:06 AM

Quote:
Originally posted by matberry
In all my years of fixing/playing with Volksies, I've seen one old Sway-a-way broken and 3x VW (two kombi and one beetle) break. So it's not unheard of, just not too common. What is the car/application?


Some of those could have been caused by previous collision damage.


vlad01 - September 10th, 2013 at 11:38 AM

Quote:
Originally posted by AA003
Quote:
Originally posted by matberry
In all my years of fixing/playing with Volksies, I've seen one old Sway-a-way broken and 3x VW (two kombi and one beetle) break. So it's not unheard of, just not too common. What is the car/application?


Some of those could have been caused by previous collision damage.


generally rust pitting on the bar causes a propagation point for the fracture to form.

New bar might of been damaged in that area or some imperfection/inclusion in the metal.


empi - September 10th, 2013 at 12:36 PM

were they in the correct sides?

Haven't seen a sway away snap but have seen a few stock ones break.... try getting the broken inner arm out...can be a bitch


vlad01 - September 10th, 2013 at 01:31 PM

I guess that possible if they were pre-stressed type. But even with standard type I don't think they are allowed to turn the opposite direction according to various sources.


They should be marked on the ends which side they go in.


ian.mezz - September 10th, 2013 at 02:41 PM

are they marked left an d right hand side


vwo60 - September 10th, 2013 at 03:20 PM

i would email swayaway to get a response, it is worth a try.


mactaylor - September 10th, 2013 at 09:33 PM

Ive seen a few. mainly offroad dudes!


narumi - September 11th, 2013 at 12:24 AM

Thank you all for prompt reply.

"were they in the correct sides?"
"are they marked left an d right hand side "
Yes they are pre stressed with left and right marked
I believe I installed correctly left on passenger right on driver.

"What is the car/application?"
they were on a super.
has about 20 kg of speaker box in the back.
lowered all round. the spring plate just sit on the bottom part of the thing so there's no pre load tension.
application... daily, weekend, Track day (hopefully).


anyway the new pair of sway away arrived (bought another pair)
this time 29mm 26 9/16"

close up photo soon


narumi - September 11th, 2013 at 01:41 AM

This is the best I could do tonight.

sorry but I work 2 jobs 9 am- 11pm this week
apologies in advance for late reply

there 's a suspiciously flat part where it broke clean off.
the burr on the edge is a result of attempt of hammering out


HappyDaze - September 11th, 2013 at 09:40 AM

The "flat part" doesn't sound good. Any change in section...even a chip, or scratch can create a problem.

Carefully examine the new bars, and if there are any imperfections...polish the bars. And treat them with care.

The new drive shafts for my Cooper Porsche were polished after machining, and I used heat-shrink tubing to protect them from stone chips & scratches.


donn - September 11th, 2013 at 12:16 PM

I work with timber so what would I know :no: but what are those rust spots, well they look like rust, on the broken area ?


vlad01 - September 11th, 2013 at 12:30 PM

that would be flash rust since the breakage.


Uber Kafer - September 11th, 2013 at 08:13 PM

Is that a split along the length?

You can see it continues as a dark line in the paint, and you can see the clean faces. that looks like the flaw that focussed the stress.


Special Air Service - September 11th, 2013 at 08:48 PM

I kind of agree with this, looks like there is a pre-existing fault in the bar.

Quote:
Originally posted by Uber Kafer
Is that a split along the length?

You can see it continues as a dark line in the paint, and you can see the clean faces. that looks like the flaw that focussed the stress.


matberry - September 11th, 2013 at 09:00 PM

Quote:
Originally posted by Uber Kafer
Is that a split along the length?

You can see it continues as a dark line in the paint, and you can see the clean faces. that looks like the flaw that focussed the stress.
x3


narumi - September 11th, 2013 at 10:43 PM

the rust was from when it rain out of no where, while taking them out,
I'll try to get another close up photo


vlad01 - September 11th, 2013 at 10:58 PM

Quote:
Originally posted by matberry
Quote:
Originally posted by Uber Kafer
Is that a split along the length?

You can see it continues as a dark line in the paint, and you can see the clean faces. that looks like the flaw that focussed the stress.
x3


+4

I just noticed that now. the same dark area is on both halves indicates where the crack started from and been there a little while. The fracture appears to continue from there.


HappyDaze - September 12th, 2013 at 08:10 AM

I'll go along with that, too. That bar was always going to fail....just a matter of when.

Maybe you should get the new bars crack-tested?


vlad01 - September 12th, 2013 at 10:44 AM

Quote:
Originally posted by HappyDaze
I'll go along with that, too. That bar was always going to fail....just a matter of when.

Maybe you should get the new bars crack-tested?


X ray and magnaflux test perhaps.

Shouldn't they do that at the manufacture?


HappyDaze - September 12th, 2013 at 11:36 AM

Quote:
Originally posted by vlad01
Quote:
Originally posted by HappyDaze
I'll go along with that, too. That bar was always going to fail....just a matter of when.

Maybe you should get the new bars crack-tested?


X ray and magnaflux test perhaps.

Shouldn't they do that at the manufacture?


Yes, but I'll bet they don't....too costly. They may do random checks?


vlad01 - September 12th, 2013 at 12:21 PM

When safety is involved there shouldn't be any compromises. Thats the problem with parts today.