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PostPosted: Sun May 05, 2019 3:32 pm 
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Congratulations on the new best Lou!

I guess I was premature thinking my t-bar woes were over. Went out in the garage today and the nose is back down.

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PostPosted: Mon May 06, 2019 2:14 am 
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I have a set of 0.830" bars if you need em. Could one of the bars have gone plastic?

Lou

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PostPosted: Mon May 06, 2019 9:29 am 
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Thanks Lou, but I have the bars I took out of my Duster.

Mike stored the car with the front suspension tied all the way up, so I am assuming the bars have indeed lost their tension. They are 25+ years old anyway.

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PostPosted: Mon May 06, 2019 3:53 pm 
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That's great Dennis! Mike is probably even happy about it too!! :D :D Nice to see his car still going down the track.

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PostPosted: Mon May 06, 2019 10:24 pm 
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Thanks Rick! And yes, Mike is indeed happy. Spoke with him today. :mrgreen:

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PostPosted: Tue May 07, 2019 7:59 pm 
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Dart270 wrote:
I have a set of 0.830" bars if you need em. Could one of the bars have gone plastic?

Lou



Is that really a thing Dr. Madsen?

How does that work?

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PostPosted: Wed May 08, 2019 12:15 am 
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I'm not sure if our treated steel tbars would do this - just a guess. Steel is ductile. If one part of the bar were to get twisted hard enough, I could imagine it going into plastic deformation (like a bolt when you twist it, but before it breaks). I am not a metallurgist, but it seems possible.

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PostPosted: Wed May 08, 2019 1:16 am 
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I tend to think in terms of a spring that is not springy anymore. It just becomes a piece of wire. I'm afraid my t-bars are jut metal rods now.

I did check last night. They are not all the way down. If they hold where they are now it would be perfect.

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PostPosted: Wed May 08, 2019 4:05 am 
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slantzilla wrote:
I tend to think in terms of a spring that is not springy anymore. It just becomes a piece of wire. I'm afraid my t-bars are jut metal rods now.
.


I don't think that is possible, unless they were subjected to enough heat to change the metal structure. Are you sure the bar anchor is not rotating?

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PostPosted: Wed May 08, 2019 5:47 am 
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In my experience springs can sag with time and load, whether round stock (coil or t-bar) or flat (rear leaves), especially when used near their limits.
It does sound like 'plasticity' to me.

How many of us are happy with the strength of the 50-year-old leaf springs in the back?
They are usually one of the first suspension issues addressed, even if it's only with a pair of air shocks :shock:
We can't really expect the t-bars to be in much better shape, especially the thin ones.

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PostPosted: Wed May 08, 2019 7:24 am 
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How about doing like we do to check rear axles for twisting. Mark a straight line the length of the bar, as see if it curves over it's length after the ride hight changes.

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PostPosted: Wed May 08, 2019 10:54 am 
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I have thought about the anchors rotating. Not exactly sure how to prove or disprove it. I guess I can mark them and see if they are spinning in the K frame?

I am also pretty sure the .810 bars are considered a wear item.

If I put my other bars and and the problem persists, I'll have to dig deeper.

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PostPosted: Mon May 13, 2019 3:27 pm 
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Got my shift light and voltmeter in the other day. Next step is finishing up the alternator install.

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PostPosted: Wed May 15, 2019 2:23 pm 
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I may be catching up to my T-bars after all. I checked them today and while they were down, they were not all the way down like before. I cranked them up some more and loaded it up for T&T tonight at 41. Mid-70s now, should be mineshaft later. :mrgreen:

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PostPosted: Wed May 15, 2019 11:13 pm 
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