19mm sway bar - Page 89 - Subaru Outback - Subaru Outback Forums
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post #881 of 1482 (permalink) Old 03-07-2017, 01:40 PM
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Has anyone noticed if the larger sway bar causes their OB to get blown around less in crosswinds? A freeway I travel on frequently has 20-25mph winds and I have to literally fight to keep the car in the lane. It really likes to wander in any kind of wind. I found a thread from the Gen 4 Outback forum where a lot of people mentioned having this issue, and the bigger sway bar seemed to help a lot. Can anyone speak to whether this holds true for the Gen 5 as well?

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post #882 of 1482 (permalink) Old 03-07-2017, 04:20 PM
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I, too, noticed my 3.6R was sensitive to crosswinds. I installed the 19mm bar and crosswind sensitivity is much improved.

In general, I think the new RSB makes a big difference in how the car feels on the road. Fortunately, my wife doesn't. She's still happy with the ride.

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post #883 of 1482 (permalink) Old 03-07-2017, 05:59 PM
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Quote:
Originally Posted by mcausus View Post
... however, one bushing (on the passenger side) is practically butted against the 'anti walking ring'. In contrast, on the driver's side, there's about a 1 cm gap between the bushing edge and the corresponding ring.
Could this earlier post of mine explain what you are experiencing?

In my situation; a large suspension movement on one side will pull the bar sideways in one direction. The reverse happens with a similar suspension movement on the other side.

Last edited by XT-sub; 03-08-2017 at 12:59 AM. Reason: Clarify.
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post #884 of 1482 (permalink) Old 03-07-2017, 09:40 PM
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Originally Posted by Garvdog View Post
Has anyone noticed if the larger sway bar causes their OB to get blown around less in crosswinds? A freeway I travel on frequently has 20-25mph winds and I have to literally fight to keep the car in the lane. It really likes to wander in any kind of wind. I found a thread from the Gen 4 Outback forum where a lot of people mentioned having this issue, and the bigger sway bar seemed to help a lot. Can anyone speak to whether this holds true for the Gen 5 as well?
Garv, I just put the 20mm on this past Friday. It felt noticeably different immediately. We had strong wind advisory yesterday and the car handled glorious. Even today passing semis it seems not to dance as much. I'm not a gear head by any means and have very minor experience with vehicles, but I can confidently say that this is the best tinker I've done to a car.
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post #885 of 1482 (permalink) Old 03-08-2017, 09:48 AM
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I have the 20mm bar and can tell you that you will still experience cross winds at times just like every other brand vehicle that I have driven. The bar may help you recover more quickly but you can still expect to be blown. It is even worse when pulling a boat.
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post #886 of 1482 (permalink) Old 03-08-2017, 09:51 AM
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One thing to know is that the Outback is built to have significant suspension travel for off-road/rough road use. It is a deliberate design choice to increase side to side flex to support a better ride and better traction off road with a thinner sway bar.

If those are not your concerns, then a thicker/stiffer sway bar will offer a superior on-road driving experience at the expense of those other characteristics.
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post #887 of 1482 (permalink) Old 03-08-2017, 11:19 AM
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Originally Posted by XT-sub View Post
Could this earlier post of mine explain what you are experiencing?

In my situation; a large suspension movement on one side will pull the bar sideways in one direction. The reverse happens with a similar suspension movement on the other side.
Many thanks for your helpful link, @XT-sub!

I tried re-centering the sway bar, but of course, it's back to wherever it wants to be at equilibrium. I keep monitoring the bushings' positions (relative to each 'anti-walking ring') whenever I get the chance, and do realize that it will vary with road, driving, etc. ... My main concern is that thus far, it appears that my passenger-side bushing is always butted against the ring.

Of course, I do NOT expect that the clearance on both sides will be equal (but I also wouldn't expect constant abutment either); this led me to go back, and look more closely at the actual positions of the rings on my 19mm sway bar -- and to my belief, now, that they've been tacked on in an asymmetric fashion (causing the constant bushing abutment).
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post #888 of 1482 (permalink) Old 03-08-2017, 01:21 PM
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Originally Posted by papajam View Post
It's the opposite actually.
During cornering, the outside suspension goes into compression due to weight transfer. The anti-roll bar, connected to both outside and inside suspensions and the body, will want to LIFT the inside suspension. Less weight on the inside suspension REDUCES tire traction. This is why increasing rear roll stiffness increases oversteer (by reducing rear traction) while at the same time reducing body roll.
This might be better envisioned by a car model with no working suspension sitting on a table. At rest, both rear tires (should) have the same amount of pressure pushing on the table (known as equal corner weights). Now, mimic weight transfer in a left hand corner by lifting up slightly the left side of the car. There is now less weight on the inside tires. If you lift even more, the inside tires come clean off the table. Less tire adhesion equals less traction.
OK, having read that a few times, it now makes sense.

Thanks for taking the time with this explanation.

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post #889 of 1482 (permalink) Old 03-08-2017, 01:26 PM
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Originally Posted by wkereven View Post
Garv, I just put the 20mm on this past Friday. It felt noticeably different immediately. We had strong wind advisory yesterday and the car handled glorious. Even today passing semis it seems not to dance as much. I'm not a gear head by any means and have very minor experience with vehicles, but I can confidently say that this is the best tinker I've done to a car.
Thanks- seems like a worthy upgrade to try. I'm not expecting it to suddenly slice thru heavy winds like a knife thru butter, I just don't want to feel like I'm flying a kite when the wind kicks up a bit. The closest I've come to the OB, height and suspension-wise, was my old Isuzu Rodeo, and that never blew around on any highway....of course, it was a heavier vehicle.
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post #890 of 1482 (permalink) Old 03-08-2017, 03:59 PM
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I have the 19mm and it performs very well on the highway, especially when I have the back loaded with weight.

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