Lean angle in challenger?

[cookie9]

Im curious about what is possible as far as lean angle, driving across the slope, in the challenger. I ask as I was negotiating some rock steps and I got to a point that made me very nervous about the angle. Upon looking back at a mates video it didnt look anything to worry about.
I guess its one of the things you never want to go to far but its good to know what is possible.

cheers

[littleriver]

Im curious about what is possible as far as lean angle, driving across the slope, in the challenger.

cheers

hope this helps





NB since you have a lift it may be less then shown on this diagram as your centre of mass is now higher

.

[cookie9]

ok great, I should rtfm

45 degrees would be nerve racking! At least I know roughly where the limit is!

cheers

[TC.Barky]

Gee 35 inclinations a bit average. Gen2 paj can do 40 per the manual. 45 cross angle would be pretty gnarly

[old Jack]

The Challenger auto will climb greater than 35 degrees if the entry of the climb is shallower and you have traction, and some momentum. As will most 4wds particularly if they are autos.
I am not sure how manufacturers arrive at the figures but I think the only way to really test it, is to have a high friction surface so traction is not a limiting issue and find the angle at which a stationary vehicle can start off on an angle and move up the slope. This will test the torque of the engine and the ability of the clutch or torque convertor to get the power to the wheels without either the engine stalling or the clutch/torque convertor slipping. This maximum angle will change depending on vehicle weight, the more weight the lesser the angle.

Side slope, most people have trouble controlling a vehicle at over 30 degrees, there will be a big difference between the stationary roll over angle and the dynamic roll over angle (vehicle moving). Raising the vehicle by 50mm will have little effect on the stationary rollover angle particularly if the springs are much firmer because with standard soft suspension there will be a larger difference between the road angle and the lateral centreline of the vehicle as weight transfer will compress the springs on the low side and have a greater effect on the repositioning of the centre of gravity. A vehicle that is heavily loaded above the top of setback height or even worse a loaded roof rack will have a lower rollover angle. Put the vehicle in motion and add some cornering forces then the actual rollover will be much less than 45 degrees. Manufacturers do not state whether the "rollover angle" is at tare, kerb or GVM, stationary or moving. My belief is it can only be at tare and stationary as these are fixed parameters.

cheers, old Jack.

[whitehillbillies]

Don't go here.
I was looking at a 20m drop.
Undermined road, at work.
Road dropped from under me.
Took ages to get the stain off the seat

whitehillbillies

[TC.Barky]

My thoughts was that the climb figures were for things like lubrication levels (eg oil pickup), however thats purely guessing.

[old Jack]

My thoughts was that the climb figures were for things like lubrication levels (eg oil pickup), however thats purely guessing.

Certainly a consideration TC but the 4D56 base engine goes back to Gen1 & Gen 2 Pajero's, the sumps on these engines are quite deep, and short in length so I do not think oil pickup would be an issue. Carburettor petrol engines pre EFI would run out of fuel due to the float in the carry bowl not being able to keep the bowl full of fuel.

cheers, old Jack.

[Ent]

Interesting reading. Yes the 45 degree and little bump then over you go. Curious how you gauge such angles from the driver's seat. People outside the car appear not nearly concerned as those in it. I dread the slide and bump on the cross fall of a muddy track as dynamic load is unknown.

Yes twice now my family has encountered road edge failures. This is becoming more a worry as forestry roads fail in Tassie and people attempt their own repairs.

[dhula]

I've found in most cases the 20c --> 0c --> 20c factor will determine the side lean angle you can tolerate and that you'll usually call it quits before the car will

[erad]

Some years back my wife and I were ar the 4WD Supershow in Sydney. We went on the 4WD test track in the rear of a Mercedes 4WD. It tilted over at a really shallow angle - way less than 15 Degrees side slope. I commented that my NL Pajero wouldn't get that far. The driver replied that it would easily eat that side slope. I replied that My wife would be screaming a lot earlier than this angle. He laughed. Wife didn't.... It is now what you are in but how deep you are at the time.....