4wheelin Technique Question (real basic, newbie stuff)

[CJ3Flyr]

I share this with great hesitancy. I can hear the laughs and flames coming my way and I haven

 

[techno]

Bloody hell, that was painful to read! Whats with the Queens English there matey??
So if I am deciphering correctly, you like to reverse up hills that you feel you are not going to make when going up forwards? That sounds pretty weird to me. If you are that good driving in reverse going up hill, then why are you afraid of reversing down if you are forced to? For me, the hassel of turning around at the bottom and again at the top is simply silly, and the major reduction in visibility is a big safety concern.
On the other hand, if it works for you, then whatever floats your boat I suppose....

 

[CJ3Flyr]

Thanks. Your biggest objection centers around visibilty/safety and then plain ole goofiness. I hear you. I generally go forward but sometimes it works well to back up... Thanks for the reply.
:cheers:

 

[T?@\7]

i know what you mean when you are saying sandpits! this place is full of them

Ive never tried reversing up too many inclines, but i can see how if u fail its easy coming down as you're already facing forward..... take some pics of ur spot?

 

[boston_kevin]

I have seen people do this, typically in Jeeps without tops so there is little visibility issues. With the 4Runner, however, there are some major visibility issues, and while this works with wider, and relatively smooth paths going up hill, if you were to encounter a narrow path with lots of ruts and boulders, this may become a problem. The other issue is since your (now) "rear front wheels" are steering, you have to compensate for the swing of the front of the truck to make the front back end turn the right way.

Like I said, I have seen it done before, but most of the time it isn't the preferred method, but if it works for you, go for it.

 

[CJ3Flyr]

I am convinced there's a time and place for backing up. I appreciate the feedback. I posted this on another board and some of the guys pointed out the extra stress on the drivetrain, which I have considered. They also pointed in comparison to my old Trooper the T4R has DAC that works very well in both directions. The ABS in the Trooper was primitive. The consensus was "trust the force Luke" and practice with the DAC. The chances of the T4R swapping ends is dramatically reduced as result of the DAC technology. I'm not ruling out the reverse technique but I will be practicing with the DAC for sure... :bigok:

:cheers:

 

[Ginuwite]

I am convinced there's a time and place for backing up. I appreciate the feedback. I posted this on another board and some of the guys pointed out the extra stress on the drivetrain, which I have considered. They also pointed in comparison to my old Trooper the T4R has DAC that works very well in both directions. The ABS in the Trooper was primitive. The consensus was "trust the force Luke" and practice with the DAC. The chances of the T4R swapping ends is dramatically reduced as result of the DAC technology. I'm not ruling out the reverse technique but I will be practicing with the DAC for sure... :bigok:

:cheers:

2 Questions:

Can you use DAC in 2WD and 4High or only in 4Lo???

Does DAC sound like gnomes with sledgehammers under the hood???

 

[CJ3Flyr]

2 Questions:

Can you use DAC in 2WD and 4High or only in 4Lo???

Does DAC sound like gnomes with sledgehammers under the hood???

I have only used DAC in 4lo. Without going and trying I am pretty sure it only works in 4lo. There is some caveot about having the transmission in 'L', I don't fully understand it yet. It seems as though the engine braking is so great that the DAC doesn't have a chance to kick in.

Yes, it does sound like gnomes with sledgehammers.
:cheers:

 

[Ginuwite]

I have only used DAC in 4lo. Without going and trying I am pretty sure it only works in 4lo. There is some caveot about having the transmission in 'L', I don't fully understand it yet. It seems as though the engine braking is so great that the DAC doesn't have a chance to kick in.

Yes, it does sound like gnomes with sledgehammers.
:cheers:

Awesome, good to know. I'm pretty sure I remember reading that DAC only works in 4Lo and I recall something about needing to be in "L". The other day I tried it in "D" and it seemed to work just fine......other than the pissed off gnomes :biggrin2:

I do know that the transmission doesn't select gears it limits them. Not sure how that affects DAC in 4Lo though?

 

[808BMW]

There are people who say that gears (differentials, transfer case) are cut in a way that was meant to be loaded one way (on the front). Putting high amounts of stress on the other side of the tooth may be bad.
Others say metal is metal and it's fine either way. I personally would go head on and leave reversing for parking stalls.

 

[CJ3Flyr]

Awesome, good to know. I'm pretty sure I remember reading that DAC only works in 4Lo and I recall something about needing to be in "L". The other day I tried it in "D" and it seemed to work just fine......other than the pissed off gnomes :biggrin2:

I do know that the transmission doesn't select gears it limits them. Not sure how that affects DAC in 4Lo though?

Just tried it... DAC only works 4Lo. It DOES work in with the trans selected to first gear. The engine braking is so aggressive that it doesn't engage much. There's some minor nuance about the ATRAC, DAC or something when 1st gear is manually selected. Maybe it was the ATRAC is more aggressive. DAC also works in 'R'
:cheers:

 

[Ginuwite]

Just tried it... DAC only works 4Lo. It DOES work in with the trans selected to first gear. The engine braking is so aggressive that it doesn't engage much. There's some minor nuance about the ATRAC, DAC or something when 1st gear is manually selected. Maybe it was the ATRAC is more aggressive. DAC also works in 'R'
:cheers:

Can I interpret that to mean fewer angry gnomes when in 1st gear???

 

[Ulfr]

There are people who say that gears (differentials, transfer case) are cut in a way that was meant to be loaded one way (on the front). Putting high amounts of stress on the other side of the tooth may be bad.
Others say metal is metal and it's fine either way. I personally would go head on and leave reversing for parking stalls.

It's true that the diffs and gears are stronger in one directon.
The cut of the pinion vs the ring is so that it's touching bigger "spot" while driving forward. Anyone that has seen a ring n pinion will understand what I'm sayin. =)

I don't exactly remember how it is in the newer gens of 4runners. I suspect it's the same front end as in LC90 (Prado) and LC 120.
Which both had reverse cut diff in front. I.e. the front diff is not in reverse while driving forward (basically the front diff is the same as rear diff, which means it get's turned 'round and is reversin' all the time)

 

[JB.]

Can I interpret that to mean fewer angry gnomes when in 1st gear???

Yes, fewer angry gnomes because in 1st gear you're putting maximum braking load on the engine. Very little for the gnomes to do unless some wheels start to slip or the grade is steep enough to push the speed past 3-4 mph. Having the center locked would also contribute to keeping the gnomes calmer.

 

[Ginuwite]

Yes, fewer angry gnomes because in 1st gear you're putting maximum braking load on the engine. Very little for the gnomes to do unless some wheels start to slip or the grade is steep enough to push the speed past 3-4 mph. Having the center locked would also contribute to keeping the gnomes calmer.

I was locked in but I was in "D" and it was a steep hill with ruts. I was pretty sure it was doing what it was supposed to, but it's good to have some confirmation. Thanks guys

 

[Thai]

In general, you should not back up going uphill due to gearing issues discussed above. In addition, approach angle is usually great than departure angle on most vehicles.