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Anti roll bar on rear suspension

Posted: Mon Nov 22, 2010 8:53 am
by Cobvs
I have seen the anti roll bar on the Gen 2 Pajero and now can't recall seeing it on my Colt bakkie although it has one in front. Is the anti roll bar on the rear part of the suspension design on the Gen 2 and has other /later Gens also have this? Will the roll bar not indirectly cause loss of articulation and thus cause the rear wheels to "easier" lift of the ground in uneven terrain due to stiffer suspension setup? :?: :?

Re: Anti roll bar on rear suspension

Posted: Mon Nov 22, 2010 9:21 am
by 4ePikanini
Cobvs wrote:I have seen the anti roll bar on the Gen 2 Pajero and now can't recall seeing it on my Colt bakkie although it has one in front. Is the anti roll bar on the rear part of the suspension design on the Gen 2 and has other /later Gens also have this? Will the roll bar not indirectly cause loss of articulation and thus cause the rear wheels to "easier" lift of the ground in uneven terrain due to stiffer suspension setup? :?: :?
My gen2 pajero did have an anti roll bar at the back.
it does hamper articulation
I don't know about the colt's design.

Re: Anti roll bar on rear suspension

Posted: Mon Nov 22, 2010 12:27 pm
by RoelfleRoux
I have never seen a leaf sprung rear axle (as on your Colt) with an anti-rollbar.
Yip, it does reduce articulation. Stable road holding and good articulation do not go together - choose your weapon. Some offroad challange boffs remove their anti-rollbars for the challange.

One of the very few coilsprung rear axle cars to NOT have an anti-rollbar is the Fortuner. Guess why some experience scary rear end problems on older shocks?

All the Gen2, 2.5, 3 and 4 Pajeros have anti-rollrbars front and rear.

Re: Anti roll bar on rear suspension

Posted: Mon Nov 22, 2010 12:32 pm
by SimonB
RoelfleRoux wrote: Some offroad challange boffs remove their anti-rollbars for the challange.
And some of us are getting quick disconnects manufactured :lol:

Re: Anti roll bar on rear suspension

Posted: Mon Nov 22, 2010 1:08 pm
by RoelfleRoux
Simon,
That is rather clever.
Would that be front and rear?
Are they in the process of being made or fitted already?
Would that be Gen 2 or Gen 3 as well?
Roelf

Re: Anti roll bar on rear suspension

Posted: Mon Nov 22, 2010 1:31 pm
by 4ePajero
RoelfleRoux wrote:I have never seen a leaf sprung rear axle (as on your Colt) with an anti-rollbar.
1989 Gen1 rear leaf anti-sway bars! ;)

(goes well with disk brakes on all 4 corners)
diff2.jpg

Re: Anti roll bar on rear suspension

Posted: Mon Nov 22, 2010 1:38 pm
by RoelfleRoux
1989!!!
I was still in nappies and coil springs hadn't been invented yet :twisted:

Re: Anti roll bar on rear suspension

Posted: Mon Nov 22, 2010 1:46 pm
by 4ePajero
At least now some will understand why a 1989 Pajero with leaf springs outperforms a 2007/8 WellKnown SUV with coils on bad gravel roads. :lol: :lol:

(Unfortunately I cannot mention the brand! :twisted: )

Re: Anti roll bar on rear suspension

Posted: Mon Nov 22, 2010 3:31 pm
by SimonB
RoelfleRoux wrote:Simon,
That is rather clever.
Would that be front and rear?
Are they in the process of being made or fitted already?
Would that be Gen 2 or Gen 3 as well?
Roelf
I can't say too much but there are manufacturing license discussions on the go with the crowd in Europe that invented them. For both front and rear

They look something like this, and require the sway bar to be cut in half.
Sway Bar Quick Disconnects
Sway Bar Quick Disconnects
image001.png (202.88 KiB) Viewed 1533 times

Re: Anti roll bar on rear suspension

Posted: Mon Nov 22, 2010 4:11 pm
by Gerrit Loubser
RoelfleRoux wrote:I have never seen a leaf sprung rear axle (as on your Colt) with an anti-rollbar.
It is not uncommon. The Nissan Patrol 60 Series already had such an arrangement back in 1960 and the current Land Cruiser 79 pick-up also has this.

RoelfleRoux wrote:Yip, it does reduce articulation. Stable road holding and good articulation do not go together - choose your weapon.
In my humble opinion, body roll and poor handling are not nearly as closely linked as many people believe in the case of beam axle suspensions. Roll is very uncomfortable and hence is perceived to be dangerous. Handling balance is tuned using anti-roll bars, though and before removing such an item willy nilly, one must make sure that you know what you are doing.

Anti-roll bars definitely hurt flex. There are no two ways about that.

RoelfleRoux wrote:One of the very few coilsprung rear axle cars to NOT have an anti-rollbar is the Fortuner. Guess why some experience scary rear end problems on older shocks?
I have an unproven theory about the Tuna's woes. I don't believe it is necessarily related to the fact that it has no anti-roll bar, but rather is the result of poor rear axle location due to the need for soft location bushes in order to have rear axle flex, given the suspension design selected (the vertical load is transferred to the rear coils via the lower trailing arms and not directly via the axle housing).