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19th September 2023, 02:55 PM #1
VZ Commodore One Tonner. What is this bit?
I have a VZ Commodore (2005) One Tonner. Recently we put it up on a friend's hoist to do an oil change and while we were walking around underneath, we spotted this part:
VZ mystery lug.jpgVZ mystery lug 2.jpg
It is rectangular and held by a single bolt. It appears to be a metal plate with a hard rubber backing bonded on. It looks as though the leaf springs could partly contact the device when the ute is loaded up, but unloaded certainly sits well clear. Initially I thought it may be some kind of bump stop, but the next picture is the bump stop, which is situated directly above the axle. (You can see the positioning better in the second pic above)
VZ bump stop.jpg
Anybody got some idea as to the purpose?
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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19th September 2023 02:55 PM # ADSGoogle Adsense Advertisement
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19th September 2023, 07:29 PM #2
Likely to be a vibration dampener.
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19th September 2023, 07:58 PM #3
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19th September 2023, 08:31 PM #4
I can’t remember the exact name Paul, but don’t take this personally, it’s too stop D. H. From over loading the suspension an bottoming out the car, Ute.
Kind of like a insurance from the manufacturer.
Ie if you load your Ute with timber an one bottle of Red wine an have a look under the Ute an can’t see daylight between the top of the Rubber an the Ute, possibly take off the Bottle of wine an see if you can see more than 1 mm of daylight.
Cheers Matt.
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20th September 2023, 08:34 AM #5
VZ Commodore One Tonner. What is this bit?
Paul,
I read your post far too quickly,
I think your taking about an Anti tramp stop or bar, not too be confused with a Movement in the US too stop a certain low class individual.
If it is, it’s purpose is too stop the Leaf springs whipping or bending too far under heavy acceleration, probably something you won’t need too worry about [emoji6][emoji6] unless you’re right foot suddenly feels very heavy while driving.
Cheers Matt.
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22nd September 2023, 05:24 PM #6
Thanks everybody for the information. I am still not clear whether it is intended to be a physical restraint or merely an indicator. Next time I overload the vehicle, I will inspect the device to see where it sits. In fact, it was as we were inspecting the condition of the leaf springs as they don't seem to have very much curvature left in them, that we noticed what I now know is called a "Leaf Spring Mass Damper."
I have always found the naming of car suspension parts confusing. To my mind, the springs are the shock absorbers and the shock absorbers are dampers.
Regards
PaulBushmiller;
"Power tends to corrupt. Absolute power corrupts, absolutely!"
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22nd September 2023, 05:27 PM #7
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23rd September 2023, 12:25 PM #8New Member
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A mass damper is added there to control harmonic vibrations, it has nothing to do with the physical action of the spring.
On the later models of the Holden leaf spring vehicles they moved these 2 dampers to the differential housing which did a better job of removing unwanted vibrations.
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23rd September 2023, 01:21 PM #9
Falcon RTV Utes have factory tramp rods fitted as they have an lsd.
Dunno that commodores ever had them.
H.Jimcracks for the rich and/or wealthy. (aka GKB '88)
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