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#1
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Double swaybar
One of the aspects I did not like on the w108 is that it leans a lot in corners. I know it's not a sportscar, and I am not interested in finding out at what point the tires lose traction, but I always wanted more reassuring, flatter cornering.
A w108 showed up at a local salvage yard, so I bought its front swaybar and installed it parallel to the stock one. The only modification I had to make is the use of shorter endlink spacers sleeves to make room for the second bar. It's still not a sportscar, but it does corner with noticeably less lean.
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Csaba 1972 280SEL 4.5, silver Last edited by vandor; 09-21-2014 at 12:44 AM. |
#2
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A creative solution.
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1959 Gravely LI, 1963 Gravely L8, 1973 Gravely C12 1982 380SL 1978 450 SEL 6.9 euro restoration at 63% and climbing 1987 300 D 2005 CDI European Delivery 2006 CDI Handed down to daughter 2007 GL CDI. Wifes |
#3
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Never quite understood how sway bars worked, but here is a really cool 3 min video: http://m.youtube.com/watch?v=VoSNAkteXjY
I'm wondering based on the video if the reason your w108 turns better has more to do with a lower sway bar vs. two. Turning would then pop the outer tire sooner?
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Current: 1971 Mercedes Benz 250 (Euro Spec) 1972 Mercedes Benz 250 (US Spec) Past: 1972 Mercedes Benz 280 |
#4
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Casaba has effectively doubled the diameter of his sway bar, which should have more effect than its placement. There are other ways of achieving the stiffness gained by adding a second bar, such as cutting out the solid cross section of the original and replacing it with a slightly larger hollow tube, and the tube diameters can be changed to tune the amount of effect desired. (Hollow sways give more resistance than solid ones, apparently, but I haven't watched the YouTube on why) Another effect of a stiffer sway bar up front is decreased understeer.
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Looking for Early 108 windshield surround wood in decent-to-good condition. |
#5
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Provided that both anti-roll bars are the same diameter the roll resistance of the front suspension has been approximately doubled.
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Just as increased roll resistance at the rear of a car makes it looser (oversteer), so increased roll resistance at the front makes it push (understeer). Increased front bar = Increased understeer. |
#6
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>Hollow sways give more resistance than solid ones,
Not true! It's just that the stiffness of the bar is related to its diameter to the 4th power (as stated above) so the center does very little work. The reason a hollow swaybar is better is because one that is just a little larger in diameter than a solid one will have the same stiffness but much less weight. As far as lifting the inside wheel, that usually happens at the rear of the car, and usually on FWD cars where the back end is quite light. I saw it all the time autocrossing.
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Csaba 1972 280SEL 4.5, silver |
#7
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Looks like I got everything bass ackwards this morning! Sorry!
So much for logging on before the coffee was made... Shoulda just slept in on a frigid fall morning in Hawaii.
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Looking for Early 108 windshield surround wood in decent-to-good condition. |
#8
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1976 280C SLOWER DRIVERS KEEP TO THE RIGHT. DRIVE RIGHT PASS LEFT |
#9
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> Very ingenious. Good job! Where did you get those clamps?
They are universal swaybar bushings, available at most auto parts stores and in hundreds of versions online. These were ~$8/pair from Amazon. The swaybar is 22mm, which is very close to these 7/8" bushings.
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Csaba 1972 280SEL 4.5, silver |
#10
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Quote:
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1976 280C SLOWER DRIVERS KEEP TO THE RIGHT. DRIVE RIGHT PASS LEFT |
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