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Stock panhard bar mystery solved

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Old 01-10-2011, 10:18 PM   #1
smokinAMD
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Default Stock panhard bar mystery solved

As I'm sure some of us that have removed / upgraded the factory panhard bar have wondered what exactly was inside of it rattling around, I figure I'd find out.

Just cleaning up my garage a bit tonight while it snows and I came across the panhard bar.

First off you need several of these:
Click the image to open in full size.

You need one of these:
Click the image to open in full size.

And of course, one of these:
Click the image to open in full size.

Combine them, and you get this, rubber stopper fail:
Click the image to open in full size.

Cut some more off:
Click the image to open in full size.

Cool, end of the butt plug:
Click the image to open in full size.

Dump it:
Click the image to open in full size.

Birdshot?!?!?!
Click the image to open in full size.



Yeah, I really was THAT bored tonight. But I was always curious what the hell was inside of it, lol.
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Old 01-10-2011, 10:35 PM   #2
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Very interesting, my car had a rattle that the Ford dealer couldn't find. It went away when I took off the stock panhard bar.

Last edited by Cowboy01; 01-10-2011 at 10:38 PM.
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Old 01-11-2011, 08:07 PM   #3
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This shows my ignorance, but I never knew a stock 'Stang GT even comes with a Panhard bar as much as the body feels like it rolls in a turn.

Anyway, now that I can reload my shotgun shells when I get sick of my stock panhard bar!

EDIT: Whoops! I was thinking about anti-swaybars when I was talking about body roll in a turn.
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Old 01-12-2011, 05:19 PM   #4
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Well, I got curious and just had to see for myself if the stock GTs come with a panhard bar. With a cheap-o flashlight in hand, I peeked under y car and Lo! And Behold!
My car has both a panhard AND a rear anti-sway bar!

Those I will be swapping out sooner or later, I still feel a bit of roll, and the stock UCA & LCA and springs sum up for some bad wheel hop, so those will be going too!
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Old 01-12-2011, 05:57 PM   #5
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Ahh, I didn't know it was a mystery.

And fwiw Jim, the PHB is not a roll control device. All S197's have PHB's on them, and only the very base of the base older V-6's had no rear swaybar. All the other cars have rear swaybars. But swaybar sizes, etc. do vary....
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Old 01-12-2011, 06:18 PM   #6
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I knew that! LOL

Anyway, as for the Panhard rod having birdshot in it, why is that?
I can understand if the idea is to put in more mass for the sake of inertial purposes (linear, and also moment-wise), but isn't that primarily the function of the springs and shocks to provide that resistance? (Aside from eliminating suspension movement oscillations by way of dampening.)
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Old 01-12-2011, 06:25 PM   #7
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Harmonics.... It's a tube that bolts to the axle and body. The shot acts to quell vibration and therefore noise.
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Old 01-13-2011, 12:46 PM   #8
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Quote:
Originally Posted by Sam Strano View Post
Ahh, I didn't know it was a mystery.

And fwiw Jim, the PHB is not a roll control device. All S197's have PHB's on them, and only the very base of the base older V-6's had no rear swaybar. All the other cars have rear swaybars. But swaybar sizes, etc. do vary....
Wasn't really a mystery I guess. I was just curious as to what the heck was inside of it.
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Old 11-07-2012, 05:16 PM   #9
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That's the damndest thing I think I've ever seen in a suspension component. Strange.
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Old 11-08-2012, 07:21 AM   #10
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OE's will go to lots of trouble to hold most sources of NVH down as low as reasonably possible. Filling a tubular PHB with shot is maybe not an obvious solution, but then again most of us would never be able to isolate some particular bit of noise to the PHB in the first place (I'm guessing that there were noise "spikes" at one or more particular frequencies that would add to the general interior noise level and they were working to shut them up).

The engineering behind what comes off the production line is not limited to topics of structural, mechanical, electronic and electromagnetics, and "producibility". Engineered noise control solutions are quite common.


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Old 11-09-2012, 06:36 AM   #11
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Well, it's sure interesting. To fill a PHB with shot like that seems contraintuitive. I recall one of my first toys ever (OK, I don't actually recall MINE... but my daughters maybe...) was a RATTLE.... which consisted of a ball filled with beads that.... rattle.

Would love to actually get the downlow on this particular feature from the engineering group at FoMoCo. I'm sure it's very interesting indeed.... after all, you don't do such things... that cost money to be sure, sans a damn good reason.
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Old 11-10-2012, 09:51 AM   #12
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Yep, got into one back in 07.
Two rubber plugs and steel shot.
Its still all over the floor in the garage...
I made an A-Arm brace out of my
OEM panhard bar...
Attached Images
File Type: jpg BraceSmall.jpg (16.2 KB, 16 views)
File Type: jpg BraceSmall2.jpg (14.0 KB, 16 views)
File Type: jpg BraceSmall3.jpg (12.5 KB, 18 views)
File Type: jpg BraceNo.jpg (15.5 KB, 17 views)
File Type: jpg Brace3Small.jpg (18.6 KB, 21 views)
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Old 11-10-2012, 09:55 AM   #13
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Now just to figure out what those two big ol
cast pieces of steel are bolted onto the ends
of my axle are for??
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Old 11-10-2012, 02:53 PM   #14
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Couldn't find them shown in the CD shop manual, but I think they're vibration dampers.


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Old 11-13-2012, 11:27 AM   #15
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Yep, add mass to the axle to keep the vibrations to a minimum.
Thanks Ford.
NVH does no bother me so maybe I will remove them...
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Old 11-13-2012, 07:37 PM   #16
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If you're talking about the black square thingy there, it's just a plastic cover I believe.
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Old 01-01-2013, 01:50 PM   #17
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It's more than just adding mass to dampen vibration. If that was all then just weld some solid round stock inside the tube to keep noise down. No the bird shot sort of floats or bounces in the opposite direction of the movement of the bar. This cancels out high frequency vibrations. The same method is used to help eliminate ground resonance on certain models of helicopters.
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Old 01-01-2013, 01:57 PM   #18
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I might be crazy here... but are high frequency vibrations not indeed vibrations?
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Old 01-01-2013, 02:26 PM   #19
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Quote:
Originally Posted by Blu13gt View Post
It's more than just adding mass to dampen vibration. If that was all then just weld some solid round stock inside the tube to keep noise down.
Where you mount it also matters, and that depends on the frequency you're trying to suppress, where it's coming from, and probably on how rigid the path between the noise source and your added mass is.


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Old 01-02-2013, 05:07 AM   #20
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Quote:
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I might be crazy here... but are high frequency vibrations not indeed vibrations?
Yes Hvb is a vibration. Like I said if it was just about mass then a piece of round stock welded into the tube would suffice. But the bird shot bounces and cancels out even more vibration but at a trade off of causing a little rattling. Therefore it is about the FLOATING mass rather than the solid mass. Hope that clarified the confusion. Yes location within the tube affects the frequency that is canceled as well as the post above mentions.
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Old 01-02-2013, 05:07 AM
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