Broken Shock

Submitted: Wednesday, Jan 23, 2008 at 00:34
ThreadID: 53809 Views:1570 Replies:6 FollowUps:6
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Had a call earlier tonight from a mate out on the SD with a broken rear shock. The shock has broken at the weld point where the eyelet joins the shock body. The question he asked me is could he weld back on with his gasless mig that he has with him, just to get him to Birdsville or Windorah?

I said I would ask and said IMHO if he wrapped shock body in wet cloth I couldn't see a problem if he didn't get it to hot.
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Reply By: Member - Kiwi Kia - Wednesday, Jan 23, 2008 at 07:44

Wednesday, Jan 23, 2008 at 07:44
I wouldn't. By definition the temperature of the metal has to be hot enough to melt or it will not weld. Even though you are hoping to localise the heat, on the other side of that thin metal shell you have oil in a contained cylinder .....BOOM...is a possibility and you have to have your face rather close when you are welding.

When this is all over could you post some details of what type vehicle and how heavy it is ? Carrying your own mig out in the Simpson sounds like he may be a bit overloaded and a bit hot at this time of the year !
AnswerID: 283245

Follow Up By: Member - Lloyd B (NSW) - Wednesday, Jan 23, 2008 at 11:42

Wednesday, Jan 23, 2008 at 11:42
Oil would only go BOOM if oxygen was available to it.

Lloyd B
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Follow Up By: Member - Kiwi Kia - Wednesday, Jan 23, 2008 at 12:28

Wednesday, Jan 23, 2008 at 12:28
Any liquid expands VERY rapidly when it changes from liquid to vapour. The rapid expansion bursts through the red/white hot plastic metal and allows oxygen to mix with the expanding gases - boom. Been there done that and got the (burnt) 'T'-shirt (overalls).
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Reply By: desert - Wednesday, Jan 23, 2008 at 08:07

Wednesday, Jan 23, 2008 at 08:07
Yes it can be done, I've had to do it several times. Just keep the runs short so heat is keep localised and quench with water between runs. Although I used stick rods the gasless should also work. Hard part is estimating how much current you need on the mig.
AnswerID: 283249

Reply By: Scoof - Wednesday, Jan 23, 2008 at 09:39

Wednesday, Jan 23, 2008 at 09:39
Yes it can be done , done it a couple times we just extended the shock right out and welded it up.Good idea to wrap with wet cloth.

Cheers Scoof. :-)
AnswerID: 283262

Reply By: disco driver - Wednesday, Jan 23, 2008 at 11:27

Wednesday, Jan 23, 2008 at 11:27
Blaze,
What has your mate got to lose, the shockie is already unusable as is?

Trying to weld it up has it's risks as outlined in other replies, but should be worth a try if all precautions to avoid overheating are taken.

If it works, well and good and if it doesn't there is nothing lost.

Disco.


AnswerID: 283289

Follow Up By: Blaze - Thursday, Jan 24, 2008 at 00:46

Thursday, Jan 24, 2008 at 00:46
Disco

Thats what I relayed to him, when we first spoke. Had a call tonight and job seems to have worked a treat, He is on the road again... Only negative is I checked the eyelets on my shocks and they are starting to break away. Pulled a rear off today and the weld looks like it was done by year 8 kid in welding class... NOT HAPPY...
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FollowupID: 548084

Reply By: Member -Signman - Wednesday, Jan 23, 2008 at 15:28

Wednesday, Jan 23, 2008 at 15:28
Just for interest sake- what comms. was he using to contact you ??
And does your mate always carry a mig welder with him?? (must be a bit of a pessimist)..
AnswerID: 283345

Follow Up By: Blaze - Thursday, Jan 24, 2008 at 00:54

Thursday, Jan 24, 2008 at 00:54
Hi Signman

Hi used a Sat Phone..... He has a little Mig, Inverter style (Gasless) that they carry in there van as they are doing trips around the place. I left the van in civilation but seems he took the mig with him, he always told me it was in case he met a Yota driver needing help LOL, He drives a GU... (after market shocks though..
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FollowupID: 548085

Follow Up By: Blaze - Thursday, Jan 24, 2008 at 01:13

Thursday, Jan 24, 2008 at 01:13
I forgot to put in specs on welder:

Weight:6 kgs.
Dimensions (mm) H x W x D : 254 x 145 x 350

Just have to leave a six pack out and its packed LOL
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FollowupID: 548087

Reply By: Outnabout David (SA) - Wednesday, Jan 23, 2008 at 21:15

Wednesday, Jan 23, 2008 at 21:15
No problems Blaze.
See trip report here
http://www.lcool.org/trips/double_simpson_2004/trip/day9/simpson_9.html

was done with stick welding and a couple of batteries. Would have thought the mig would be easier,
AnswerID: 283418

Follow Up By: Blaze - Thursday, Jan 24, 2008 at 01:02

Thursday, Jan 24, 2008 at 01:02
Gday David,

After reading the link you posted then hearing from my mate tonight that it was a breeze and then seeing the crappy welds on mine, I might do them before I do the Anne Beadell later this year.

My lad works for BOC, so I might have to look into one of these small inverter migs.

Thanks for the link, was a very good read.
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FollowupID: 548086

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