a little offroading

Will_4R

Will_4R

Member
A frozen waterfall collapsed into big chuncks of solid ice accross the road. Good thing was driving a 4th gen.

<object width="400" height="224" ><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="http://www.facebook.com/v/463936335194" /><embed src="http://www.facebook.com/v/463936335194" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="400" height="224"></embed></object>

ATRAC in action

<object width="400" height="224" ><param name="allowfullscreen" value="true" /><param name="allowscriptaccess" value="always" /><param name="movie" value="http://www.facebook.com/v/472114180194" /><embed src="http://www.facebook.com/v/472114180194" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="400" height="224"></embed></object>

just to clarify: this is along an established trail/road for motorized vehicles (all laws and tread lightly ethics were followed).
 
Last edited:
Register to hide this ad
Great videos! They totally highlight how capable the ATRAC makes these 4Runners, even when they're wearing very tame tires.:party:
 
CJ3Flyr said:
Great videos! They totally highlight how capable the ATRAC makes these 4Runners, even when they're wearing very tame tires.:party:
Click to expand...

Hear, hear great video! Now dumb question time. Can anyone give a quick tutorial on how the ATRAC was in play and so capable here? I've read many of the threads on the ATRAC subject, but unfortunately it doesn't feel like the light bulb has turned on yet.
 
Maz said:
Hear, hear great video! Now dumb question time. Can anyone give a quick tutorial on how the ATRAC was in play and so capable here? I've read many of the threads on the ATRAC subject, but unfortunately it doesn't feel like the light bulb has turned on yet.
Click to expand...

Read the links here, look at the first two under the bold "Off-roading info". http://www.toyota-4runner.org/gener...anted-know-about-t4r-but-were-afraid-ask.html

The short answer is ATRAC uses the ABS braking system to provide "limited-slip like" performance. When using a gentle, smooth power application the T4R does a great job of sending the power to the wheel with traction. Essentially it's truly 4wd. Old school, open diff 4wd's could get stuck if one side of the vehicle was on ice and the other side was on dry pavement. Limited-slip or locking Front and/or Rear differentials remedy this. ATRAC is a high tech iteration of limited-slip.
 
Very cool, I just got back from a cabin of mine in North Arkansas. Coming out w/ a 4wheeler on a trailer and a full load in the back, my 05' didn't miss a beat. On the steep, wet, muddy hill, I went slow and steady and the atrac did it's thing. I would have been spinning my 32" mud tire on my old tacoma to get up the same hill! Love my Runner, great vids!
 
this may be a noob comment but why were you aiming left in the mud video? if you pointed straight you would have followed the exact same track but faster
 
when you are in deep mud rutted trails with a stock or non mud tire and you become stuck, you have to turn the wheel left and right to gain traction. if he kept the tires straight he would have dug himself in.
 
CJ3Flyr said:
Read the links here, look at the first two under the bold "Off-roading info". http://www.toyota-4runner.org/gener...anted-know-about-t4r-but-were-afraid-ask.html

The short answer is ATRAC uses the ABS braking system to provide "limited-slip like" performance. When using a gentle, smooth power application the T4R does a great job of sending the power to the wheel with traction. Essentially it's truly 4wd. Old school, open diff 4wd's could get stuck if one side of the vehicle was on ice and the other side was on dry pavement. Limited-slip or locking Front and/or Rear differentials remedy this. ATRAC is a high tech iteration of limited-slip.
Click to expand...

Thank you flyer...I think reading the threads was trying to take in too much info, and ending up on overload. You're synopsis boils it down to the basics.
 
ATRAC: One tires spins one or two revolutions, the computer senses the slip, applies the brake to the slipping wheel, tricking the differential to send power to the wheel with traction, and forward I go. I need to get the RPMs to about 2000 for ATRAC to kick in. That is why at first I wasn't going anywhere. If you look closely I only have one wheel spinning on each axle. As soon as ATRAC starts working, it works well and keeps working till I am on solid ground.

In the first video, ATRAC was working most of the way as well. There certainly was uneven traction left to right, which would have made that crossing way harder with open diffs and no traction control. If you look closely it looks like hte rear tires with chains on them are doing almost all the work. Not much traction up front.

I know the 4th gen has worse angles and less clearance than previous generations, but the ATRAC more than makes up for it offroad. Although it looks less "offroad truck-like" than older 4Runners it's added strength and power combined with ATRAC makes it a real beast offroad.
 
MikeRiela said:
when you are in deep mud rutted trails with a stock or non mud tire and you become stuck, you have to turn the wheel left and right to gain traction. if he kept the tires straight he would have dug himself in.
Click to expand...
yea but that mud wasnt thick and wasnt deep if he had gone straight with a little more lead on his foot it would have been right through.
 
Traction was a little better with the wheels turned. Also, keeping the wheels turned helped keep me from getting high centred. I am not saying I did it the right way, but at the time that is what felt best.
 
Nice Video!!
Just noticed the BC plates. Where in BC was it? I'd love to take my 4runner on trails like that
 
You must log in or register to reply here.

Members online

Total: 288 (members: 4, guests: 284)

Forum statistics

Threads
278,307
Messages
3,554,050
Members
248,016
Latest member
Advally Service

Share this page

Trending content

Back
Top