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Rollover/COG diagram (paranoia?)....

Posted: Thu Nov 29, 2007 2:17 pm
by juls
Does anyone have or know where to find that diagram showing what incline/angle is safe to drive across?

I am continually crapping my dacks every time im driving across a hill and the cabin rocks and tilts on an angle.

How do i get a feel for how far you can go before rolling without actually rolling to find out? :P

Re: Rollover/COG diagram (paranoia?)....

Posted: Thu Nov 29, 2007 2:19 pm
by bogged
too many variables, how high is truck what tires, how soft is suspenision, ground etc...

if you feel within your limits, stay there. or a video camera and go with that
or a wank o meter on the dash...

Posted: Thu Nov 29, 2007 2:24 pm
by GRPABT1
Like said above, just don't go outside your limits as a driver and you won't find the limit of the vehicle.

Re: Rollover/COG diagram (paranoia?)....

Posted: Thu Nov 29, 2007 2:25 pm
by shorty_f0rty
juls wrote: I am continually crapping my dacks every time im driving across a hill and the cabin rocks and tilts on an angle.
Thats half the fun of 4wd'ing! Learn from experience and try and reduce factors that may influence your COG. ie, no body lift, take off your hard roof if you can, or roof racks.. etc.

Re: Rollover/COG diagram (paranoia?)....

Posted: Thu Nov 29, 2007 2:58 pm
by bad_religion_au
juls wrote:Does anyone have or know where to find that diagram showing what incline/angle is safe to drive across?

I am continually crapping my dacks every time im driving across a hill and the cabin rocks and tilts on an angle.

How do i get a feel for how far you can go before rolling without actually rolling to find out? :P
find a nice deep rutt on a side slope with an embankment to catch you. then drive it and get the feel of when it tips over.

or you could do what someone on here did. put their old mattress on the ground and ramp onto a log, rolling onto the mattress

Posted: Thu Nov 29, 2007 2:59 pm
by GQ Bear
hope for a nearby tree to lean onto :lol:

Re: Rollover/COG diagram (paranoia?)....

Posted: Thu Nov 29, 2007 3:19 pm
by bj42turbo
juls wrote:Does anyone have or know where to find that diagram showing what incline/angle is safe to drive across?

I am continually crapping my dacks every time im driving across a hill and the cabin rocks and tilts on an angle.

How do i get a feel for how far you can go before rolling without actually rolling to find out? :P

Dont ask me :rofl:

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Re: Rollover/COG diagram (paranoia?)....

Posted: Thu Nov 29, 2007 3:31 pm
by bogged
bj42turbo wrote:Dont ask me :rofl:

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were you straddling the ruts? Eg left wheels in center of track? if so, we spend many hours in the dark helpin a dude who rolled his wifes Courier ute on a similar lookin track one day with 3-4 turfors. that was the telling point to buy a elect winch.

Posted: Thu Nov 29, 2007 8:43 pm
by ludacris
What about a link to a diagram of an Exo cage. :D

LudaCris

Re: Rollover/COG diagram (paranoia?)....

Posted: Fri Nov 30, 2007 12:01 pm
by Hoonz
bogged wrote:
bj42turbo wrote:Dont ask me :rofl:

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were you straddling the ruts? Eg left wheels in center of track? if so, we spend many hours in the dark helpin a dude who rolled his wifes Courier ute on a similar lookin track one day with 3-4 turfors. that was the telling point to buy a elect winch.
how the fawk did u do that? looks like a straight forward trail?

Posted: Fri Nov 30, 2007 12:40 pm
by bad_religion_au
at a guess he was straddling the ruts because his diff center was dragging on the mount, and either his passenger wheels slipped into the drivers side ruts, or he went too high on the embankment while straddling

Posted: Fri Nov 30, 2007 4:09 pm
by simcoz
Put a strap on it then drive on an angle till it starts to go.This will give you a good idea of how far you can go before it rolls.Dont forget to get some mates hanging of the strap to stop you.

Posted: Fri Nov 30, 2007 4:37 pm
by cj
If you feel like a little bit of maths and some drawing this might help you do a rough calculation of the angle you can be on before it tips. Keep in mind the COG will change with lift, exo's or any other mod that shifts weight on a vehicle. As the COG approaches the vertical red line the vehicle becomes less stable and more susceptible to tipping and once it passes the red line it's game over.
The PDF has stability factors for a range of vehicles and although it is American a number of the vehicles are what we have but you may need to know the model name in the US market as it can be different.

It is also interesting to compare the SSF of vehicles such as the Suzuki Sierra(Samurai) which has a supposed rep for tipping easily with something like a Pajero(Montero).

http://www.nhtsa.dot.gov/cars/rules/reg ... 0final.pdf

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