Outer Limits 4x4 Board

I know what you are thing WTF

But to get my 4runner engineered I will have to do a lane change test at 110km/h. This involves moving between cones approx. 3.5m apart at 110 km/h. Apprently the engineer I just spoke had a brand new factory 4x4 (he would not name it) go over on it's side. And a surf with a 3" body and 4" superlift suspension kit also failed (couldn't get it saftely above 95 km/h).

So in order for my soft suspension to work with the lane change test I think I am going to have to put anti-sway bars on with disconnects.

So do any 4runners/surfs/hiluxes come with sway bars standard, particularly in a leaf model. I know a ifs surf (1988) has a front sway bar (I have one sitting on floor of the workshop), but what about leaf spring models. I am looking for front and rear ones. Any other alternatives cruisers, patrols, etc

I currently have rancho rs 44044's in the front with rancho 9012's. In the back I plan to use some longer spring (like an AU/Chevy pack) and rancho 9012's. I have a commodore 304 EFI v8 and will have bar work and a winch. So the suspension will be soft. I will be running 37" MTR's

Chris.

I found some info here

http://home.off-road.com/~bibelheimer/sas.html#swaybar

But Erik is using a Tacoma sway bar now to avoid the fron tail shaft. Do we have a model here in OZ that is the same as the tacoma???

Also he is using a full width dana 44 so he has more room to mount the anti-sway bar on the axle without interfering with the shock. Is it going to be possible to mount an anti-sway bar and not interfer with the shock on a standard axle???


Chris.

personally i dont think it is possible to pull of a 3.5m at 110, but then again i could be wrong. 3.5 just seems like a really really short distance at such a speed.

I would look at different shocks, go for something really hard to control the roll better.


NICK

have you thought of using those polyair airbag things in the rear, could be a bit pricey though

3.5 metres apart , how long is your car, must be bloody close to that, if not over

i would say it would be about 5m long

NICK wrote:personally i dont think it is possible to pull of a 3.5m at 110, but then again i could be wrong. 3.5 just seems like a really really short distance at such a speed.

I would look at different shocks, go for something really hard to control the roll better.


NICK

It is not braking within 3.5m it is manovering (weaving) between cones at 110km without going outside about 3.5m of the cones. This measurment is dependent on different factors that are calculated by the engineer. So it may not be 3.5m it may be 2m or 4m. So the overall course would be about 7m wide with the cones in the middle.

I have rancho 9012 set on 4 on the front and 9012 set on 4 in the rear when on the street. I could bump them upto 5 all-round, but I still think it will not be enough.

Chris.

cbr wrote:[It is not braking within 3.5m it is manovering (weaving) between cones at 110km without going outside about 3.5m of the cones. This measurment is dependent on different factors that are calculated by the engineer. So it may not be 3.5m it may be 2m or 4m. So the overall course would be about 7m wide with the cones in the middle.
.

yeah thats the way i understood it, i just dont think it is possible, even if the cones were 5m apart, try driving down the highway and weave in and out the cat eyes with out hitting them, that is hard enough at the best of times in a 4x4.


NICK

NICK wrote:

cbr wrote:[It is not braking within 3.5m it is manovering (weaving) between cones at 110km without going outside about 3.5m of the cones. This measurment is dependent on different factors that are calculated by the engineer. So it may not be 3.5m it may be 2m or 4m. So the overall course would be about 7m wide with the cones in the middle.
.

yeah thats the way i understood it, i just dont think it is possible, even if the cones were 5m apart, try driving down the highway and weave in and out the cat eyes with out hitting them, that is hard enough at the best of times in a 4x4.


NICK

I am not sure of the space between the the cones, but this is a hard test.
This is why some standard 4x4 have failed. So this is the reason why I am looking at geting sway bars. I have no choice, to get my runner engineered this will have to be done :(

Chris.

if ya gonna get it engineeried with 37s u will have no chance in hell passing any lane change test regardless of what suspension ur running. there is just simply to much sidewall in such a big tyre!!

Would more air in the tyres help? Or do they check this also?

ToNkA wrote:Would more air in the tyres help? Or do they check this also?

That's what I am thinking

Apprently Opposite lock will be getting a patrol with 37" registered (plus the lane change test) in a month or two. We will see how it goes!!

I spoke to an engineer who has done a few and he said that they warm the tyres and adjust tyre pressures to suit

Chris.

DUDE:

Ranchos
setting = hard

driving = rock solid.

Did a search on the net and white line do kits for the front and rear of a toyota 4runner and hiluxes. I have emailed them and am waiting for a responce as it does not mention fitting positions.

Chris.

cbr, are you sure this is really what you have to do?
After reading your post the other day i tried slipping in between the road markers that are about 3-3.5 meters apart at 100km/h in my wifes pulsar and almost rolled the bloody thing.Would like to know how your meant to pull it off in something that would be at least 1meter higher?

dude read up.

Its 3.5 meters either side of the cone (ie the road is 7 meters wide)

The cones may be 5 meters apart.

buddha wrote:cbr, are you sure this is really what you have to do?
After reading your post the other day i tried slipping in between the road markers that are about 3-3.5 meters apart at 100km/h in my wifes pulsar and almost rolled the bloody thing.Would like to know how your meant to pull it off in something that would be at least 1meter higher?

It is not really like a slalom course. But it is meant to give an indication on how well the vehicle can perform lane changes and high speed maneuvering (avoiding obstacles). The width and distance between the cones is determined by the engineer with a formula provided by the police and is dependant on the vehicle being tested.

The idea is for the driver to reach the 100km/h speed and maneuver between the cones, by moving from one "lane" to the other over a distance. It is not so much a weaving slalom cause, but move to the left "lane" drive straight, move to the right "lane" drive straight move to the left "lane" drive straight, etc. In a slalom cause it is a constant weaving left and right around the cones, no real straight driving involved.


Chris

ahaaaa, sorry fellas.Well i guess you learn something new everyday.

Yesterday afternoon I did the same lane change test and also a slalom test, and another test they now require where you drive at about 40kmh in a tight circle (this was on a dragstrip with 2 lanes and a narrow lane in the middle) and lock the brakes up, then repeat in the opposite direction.
I did it all with 37's and 9012's on 4.

Wendle wrote:Yesterday afternoon I did the same lane change test and also a slalom test, and another test they now require where you drive at about 40kmh in a tight circle (this was on a dragstrip with 2 lanes and a narrow lane in the middle) and lock the brakes up, then repeat in the opposite direction.
I did it all with 37's and 9012's on 4.

What type od 4x4 do you have??

What suspension?? is it soft?? do you have sway bars??

What speed was the lane change test done at ??

Chris

sorry, SWB Mav, ~6" coils, ~60mm body lift, 2480mm wheelbase, ~140mm widened track, 5-link front, tri 4-link rear, no sway bars. Suspension is reasonably soft, I guess.. The lane change test was probably the easiest of the three, I don't know what speed it ended up being at, the engineer was in the pass seat, I just kep accelerating down the strip untill he told me to swerve.. probably about 100??
The dounut type braking test was the hardest on the vehicle, there is no way I would have passed running my old claws.

what does the donut test prove?

under/over steer in an emergency situation... Hooking around a roundabout and a kid runs onto the road sort of thing...

N*A*M wrote:what does the donut test prove?

the engineers thought it would be cool to see how many cars rolled whilst performing a difficult maneuver!

Wendle wrote:sorry, SWB Mav, ~6" coils, ~60mm body lift, 2480mm wheelbase, ~140mm widened track, 5-link front, tri 4-link rear, no sway bars. Suspension is reasonably soft, I guess.. The lane change test was probably the easiest of the three, I don't know what speed it ended up being at, the engineer was in the pass seat, I just kep accelerating down the strip untill he told me to swerve.. probably about 100??
The dounut type braking test was the hardest on the vehicle, there is no way I would have passed running my old claws.

You drive the 4x4

In WA we have to get a CAMs approved driver. He also wears full race gear including helmet

Just for the lane change test it is going to cost $650.00, that inculdes track time and the CAMs driver. Then the engineers cost on top of that. I think it is going to cost me over $1000 to get my 4x4 engineered F**k

Chris.

hey cbr from what ive heard in the last couple of weeks you dont need a cams driver,and it has been moved to the kwinana motorplex to cut down on costs and i heard a rumor of them droppin the speed limit cause alot of 4x4s wouldnt get to that speed in the required time.

bazooked wrote:hey cbr from what ive heard in the last couple of weeks you dont need a cams driver,and it has been moved to the kwinana motorplex to cut down on costs and i heard a rumor of them droppin the speed limit cause alot of 4x4s wouldnt get to that speed in the required time.

Interesting!!

I spoke to an engineer last week and he mentioned that opposite lock in balcatta organise these test. I spoke to them and that is where I got this information.

Chris.

really we should get in touch with tech division in welshpool and find out for sure!!

bazooked wrote:really we should get in touch with tech division in welshpool and find out for sure!!

I am currently putting together my proposal of all the mods I want to do. This will be sent to the tech division in a couple of weeks.

BTW 2 engineers I spoke to said that if you are putting a lift that will raise the 4x4 higher then 50mm (body and/or suspension) from standard then you would need to do a lane change test.

Chris.

chris you want a copy of my engineering proposal?

it's obviously quite different but you can get an idea on my approach