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Lift and anti roll bar
- Mole
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- jackonlyjack
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Just remove it drive steady till you get used to the new feel
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Adding lift raises the body (and chassis) away from the axle, this causes the anti-roll-bar drop links to angle out at the top, as the anti-roll-bar effectively shortens with the lift (that old guy Pythagoras proved this bit... the hypotenuse thingy-majig), adding spacers to the U shaped mount at the top where it bolts to the chassis straightens out these drop links... been there, done that...
Yes, I agree somewhat that the best mod for an offroad Jimny to improve articulation is indeed to remove the anti-roll-bar and "throw it as next doors dog" (as the old saying goes), after all, it is just a long length of sprung steel that is there to curb lean/sawy. body-roll on the road... and offroad therefore curbs articulation, BUT the best solution is to fit an anti-roll-bar disconnect system, predictable safer cornering, predictable body roll if you have to do an emergency swerve on the motorway, yet, remove the bolts from the anti-roll-bar disconnect system when you are at the play-site or greenlaning area, and you have ultimate articulation as well. and don't forget to bolt it back up again for the safe journey home...
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Drop link angle
Drop link angle with 20mm spacers on the top -
These ^^^
I then upgraded to 40mm spacers -
And this was the result with the angle of the drop links -
Hope that helps...?
Dave
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The important question is how the small change in droplink angle affects how it feels from the driver's seat, and the simple answer is it doesn't.
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Oh and before anyone complains the length of the links has no effect on the operation of the bar as long as they are equal. What changes the way the bar works is either lengthening or shortening the distance between the mounting point on the end of the bar and the point at which it pivots at the chassis. That or increasing the effective cross section of the bar itself. For example welding a disconnect to it.
Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
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It all comes down to what problem you're trying to fix, but to summarise:
If it's the increase in body roll from fitting a lift, this has nothing to do with the height of the arb so you don't need to change anything.
If it's concern about the droplinks inverting, check for yourself on full flex but I'm pretty sure this isn't possible, even with a 4+ inch lift, so you don't need to change anything.
If it's a concern about the angle of the arb or the droplinks, or both relative to each other, these represent very small changes in leverage ratio and will not have a noticeable affect its operation, so you don't need to change anything.
Anything I've missed?
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It will still work and in the majority, little or no change will be felt. But if it was a car that was driven hard on tarmac, you would see a difference in performance. It is one of many suspension geometry points that rally teams work on when setting up a car, changing length from tarmac (short) to forest (long). If it didn't matter, I'm sure they would use service time on other things...
sniper
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Temeraire (2018 quasar grey automatic)
One of the last 200ish of the gen3s, probably.
ADOS Attention Deficit Ooooh Shiny!
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- Mole
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sniper wrote: The angle of fitment is very important to effective anti roll bar operation, it's a spring designed to work on a set angle, change that angle and the forces in to / out of the spring, change.
It will still work and in the majority, little or no change will be felt. But if it was a car that was driven hard on tarmac, you would see a difference in performance. It is one of many suspension geometry points that rally teams work on when setting up a car, changing length from tarmac (short) to forest (long). If it didn't matter, I'm sure they would use service time on other things...
sniper
You're talking about adjustable anti roll bars which certainly are a thing in motorsport, A series of holes in the ends of the anti roll bar allow the drop link position to be altered, effectively altering the length of the spring (the spring being the arb itself), and therefore the strength of the anti roll effect.
Notice how drastically the drop link angle changes when the strength of the anti roll bar is adjusted, yet there is no counter-adjustment made to maintain a specific drop link angle, as this is not significant.
The Jimny does not have an adjustable anti roll bar. It's a fixed length spring. Adjusting the length of the drop links or changing the position of the anti roll bar is not the same thing as adjusting the stiffness of the roll bar itself. As long as both ends are parallel with each other when the vehicle is on level ground, and it is operating in a range where the droplinks will not invert, the angle of the roll bar itself does not matter.
Lambert wrote: Not on a Jimny but my old 90 was a pig for it on the back to the point that I had enough and removed it.
The rear anti roll bars on late model Defenders were a terrible afterthought and should all be removed and destroyed.
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