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trust a torsion bar?
#565451
12/29/09 12:02 AM
12/29/09 12:02 AM
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Joined: Aug 2009
Posts: 113
S.E. Wisconsin
darepairman
OP
member
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OP
member
Joined: Aug 2009
Posts: 113
S.E. Wisconsin
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In building my 72 dart, I nicked a torsion bar with a grinder. I have seen very large coil springs break right were they were hit with an arc welding rod. I already have a different set of bars but I was wondering if the ones that were nicked would be trustworthy? Thanks Ed
The Event Horizon is on its way
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Re: trust a torsion bar?
[Re: darepairman]
#565458
12/29/09 05:36 AM
12/29/09 05:36 AM
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Joined: Dec 2003
Posts: 22,791
Bitopia
jcc
If you can't dazzle em with diamonds..
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If you can't dazzle em with diamonds..
Joined: Dec 2003
Posts: 22,791
Bitopia
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How deep is the nick, which direction does it run, not sure how it would matter where on the TB it is, how HD is TB for the application, was TB ever used/stressed after receiving nick, and low heat grinding/polishing/painting, and never selling it would be only 3rd world solution, I wouldn't likely use it, but only based on questions above would I toss it. 
Reality check, that half the population is smarter then 50% of the people and it's a constantly contested fact.
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Re: trust a torsion bar?
[Re: jcc]
#565459
12/29/09 11:43 AM
12/29/09 11:43 AM
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Joined: Aug 2009
Posts: 113
S.E. Wisconsin
darepairman
OP
member
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OP
member
Joined: Aug 2009
Posts: 113
S.E. Wisconsin
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Thanks guys, and JCC, I would never resort to 3rd world solutions  and I would never sell a part that was dangerous or damaged. they are scrapped. Ed
The Event Horizon is on its way
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Re: trust a torsion bar?
[Re: GTXKen]
#565461
12/29/09 12:26 PM
12/29/09 12:26 PM
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Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
1_WILD_RT
Management Trainee
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Management Trainee
Joined: Jan 2004
Posts: 27,347
Today? Who Knows?
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Quote:
OK, my bars are both "nicked" from having been removed and replaced. The nicks came from the removal tool slipping on the bar. They are probably a fingernail width wunning parallel to the bar.
Do you guys think these bars are unsafe?
I'd sure hate to have them fail....They don't cost alot but the damage if it fails sure could....
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Re: trust a torsion bar?
[Re: 6T6Cuda]
#565465
12/29/09 10:17 PM
12/29/09 10:17 PM
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Joined: Sep 2007
Posts: 14,889
up yours
Supercuda
About to go away
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About to go away
Joined: Sep 2007
Posts: 14,889
up yours
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parallel to the bar is usually ok, perpendicular is what's bad. If you smooth and dress the nick, and it's not deep, it's usually ok.
However, if you can afford it, replacement is probably teh best bet.
Just think about where the T bar lives and all the road juck that's hit all the T bars over the years. How many have actually failed? Probably not many, I've had the adjuster bolts rip out, but never a T bar fail. FWIW.
They say there are no such thing as a stupid question.
They say there is always the exception that proves the rule.
Don't be the exception.
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Re: trust a torsion bar?
[Re: aarcuda]
#565468
12/29/09 11:58 PM
12/29/09 11:58 PM
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Joined: Jan 2003
Posts: 1,692
Seattle WA
RichV
top fuel
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top fuel
Joined: Jan 2003
Posts: 1,692
Seattle WA
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Quote:
Quote:
EVER try cutting a t bar in half? Thats some strong metal! I can't see a small nick breaking a t bar in half?
its a stress fracture phenomenon. like a chip on a windshield. when conditions are right, it just goes snap
Sorry its a fatigue issue brought about by a stress concentration. The damage therefore can be mitigated by blending out the damage if it isn't too deep. A longtudinal scrape is less of a stress concentration than a lateral scrape. A small bar will be sensetive to damage than a large bar.
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Re: trust a torsion bar?
[Re: RichV]
#565469
12/30/09 12:04 AM
12/30/09 12:04 AM
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Joined: Mar 2003
Posts: 15,493
the boonies
aarcuda
I Live Here
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I Live Here
Joined: Mar 2003
Posts: 15,493
the boonies
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csuse my incorrect terminology. i should have waited for your correct answer
It's got a cop motor, a 440 cubic inch plant, it's got cop tires, cop suspensions, cop shocks. It's a model made before catalytic converters so it'll run good on regular gas.
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Re: trust a torsion bar?
[Re: 440challenger]
#565470
12/30/09 01:34 AM
12/30/09 01:34 AM
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Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
dave571
master
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master
Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
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Quote:
EVER try cutting a t bar in half? Thats some strong metal! I can't see a small nick breaking a t bar in half?
It's a stress riser. Will act as a failure point. Imagine cutting a line a 1/4 of an inch deep across a diving board width wise. Jump on it a few times, and that's where it'll snap.
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