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Henry Webster:

--- Quote from: "Mace" ---

So spinning this wheel (even tho it's only got it's own weight pushing it down) will achieve nothing, correct ?
--- End quote ---


A 'light' wheel spinning will only dig or scuff the surface and provide little in the way of traction.  In much the same way as locking the brakes does little for braking!

If I am heading sideways for an obstacle, the last thing I want to do is to stop the wheels from spinning.  If they are spinning, I am less likely to get into a roll situation as the spinning wheels should hopefully slide over the top.  That's the theory anyway! :wink:

It gets into the realms of soil dynamics and coefficients of grip.

If you do find yourself in a cross axle situation like you quote chances are you would be better trying left foot breaking to encourage the diff to transfer the power back to the wheel with the grip.

Regards

H

gords:
Wow, another interesting "hot" topic (or is it the same? :wink: ) - very interesting reading.

Can I please ask that as many of you as possible congregate around the BBQ at Whaddon and provide the nights entertainment :wink:  :lol:

Just to add to the fire ... I mean conversation - my car still has it's anti-roll bars and a 1" lift. If/when I get into a situation where one wheel is off the ground (past the limit of articulation), then the car will potentially be unbalanced, I assume tending to go where the lifted wheel should be (on the ground).

If I had super articulation and the wheel actually managed to stay on the ground, would that make the car more stable? I.e. the shock absorber (at least) would help reduce the speed of change?

Basically, if all 4 wheels are on the ground (at least touching, not necessarily with much weight from the car), does that make it more stable/controlable?

rollazuki:

--- Quote ---If you do find yourself in a cross axle situation like you quote chances are you would be better trying left foot breaking to encourage the diff to transfer the power back to the wheel with the grip.
--- End quote ---



I dont get crossaxled, I use dislocation cones, my wheels stay on the ground :D

If that fails, I flick in the ARB's :D

Rolla

muddyweb:
Traction benefits aside....   one thing to be wary of is the additional strain being put on the drivetrain and suspension with large amounts of axle movement.

The bushes are put under more compression, the driveline UJs run at high angles putting strain on them and the input / output bearings of the diff and transfer box.

You also get very exciting effects if the drooping wheel suddenly does find some grip.  The rear radius arm of a Land Rover is designed fundamentally to work in compression.. the further away from it's 'natural' position it gets, the more oblique the forces applied to it become.    Even "heavy duty" arms can be bent up like a banana with a bit too much power and some sudden grip.

These things are what keep us amused on dark nights when playing with suspension :-)

Eeyore:

--- Quote from: "muddyweb" --- The rear radius arm of a Land Rover is designed fundamentally to work in compression..  
--- End quote ---


Umm, don't you mean tension, unless your working on the front?  :? Apply a big force, axially from the wrong end and they do 'pretzl' nicely, without adding off-axis loadings!.

cheers
 8)
Eeyore

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