off road driving, how about this?
#1
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When i'm on the trail i always use manual low. In our trannies drive 1st only has a one way clutch holding the rear i think sun gear so when slowing down you have no engine braking, which means better gas mileage. In manual 1st there is a clutch band that grabs the drum on the one-way clutch to hold it in both directions which gives you engine braking and another holding device so as not to wear out the one-way clutch as fast. Especially off-road since there is a higher torque load normally being put on the tranny and drivetrain.
EDIT: Also when you need alot of power and wheel spin it prevents upshifts that would occur in drive.
EDIT: Also when you need alot of power and wheel spin it prevents upshifts that would occur in drive.
#4
#7
Originally Posted by rangererv
i use drive
I use drive anyway. Now I have the choice of any gear -- manual!
#8
As was said, forcing the transmission into 1st (and only 1st) gives you a lot more engine braking. Engine braking is very important off road as it is easier to modulate than the brakes. This makes for better traction when going down steep, loose inclines. It also removes the funky (IMHO) 3-channel ABS systems we have from the equation. I believe it's even more effective w/ a manual trans as you can slip the clutch for even more modulation, especially when climbing. But you take what you can get w/ an auto..
1st gear + 4Lo results in one helluva lot of traction off road. I was astonished the first time I tried it out. A week or two after I bought my truck (my first ever 4x4), I was dying to try it out. I found an unmaintained road out in the middle of nowhere. I had been through it before on the bike. By picking my lines I was able to avoid most of the major hazards. Of course this time I did the opposite: I aimed for the hazards! Before I knew it I had the truck burried up to the middle of the door on the driver's side. I had the two passenger side wheels on solid ground and the two driver's side wheels burried in slop. The wheels in the dry were practically in the air and had zero traction. I was just sitting there spinning the wheels in all gears in 4Hi. .. That's about when I started to worry. I was out in the middle of nowhere, alone, w/ no winch, come-along, or even a tow-strap. As a last ditch efford I dropped it in 4Lo and said to myself "Let's see what this does.." That truck just about leaped out of the ditch. It was like it got a good swift kick in the tailgate! Fawkin' amazing!
4Lo + 1st gear is pretty darn cool!
1st gear + 4Lo results in one helluva lot of traction off road. I was astonished the first time I tried it out. A week or two after I bought my truck (my first ever 4x4), I was dying to try it out. I found an unmaintained road out in the middle of nowhere. I had been through it before on the bike. By picking my lines I was able to avoid most of the major hazards. Of course this time I did the opposite: I aimed for the hazards! Before I knew it I had the truck burried up to the middle of the door on the driver's side. I had the two passenger side wheels on solid ground and the two driver's side wheels burried in slop. The wheels in the dry were practically in the air and had zero traction. I was just sitting there spinning the wheels in all gears in 4Hi. .. That's about when I started to worry. I was out in the middle of nowhere, alone, w/ no winch, come-along, or even a tow-strap. As a last ditch efford I dropped it in 4Lo and said to myself "Let's see what this does.." That truck just about leaped out of the ditch. It was like it got a good swift kick in the tailgate! Fawkin' amazing!
4Lo + 1st gear is pretty darn cool!
#9
the only time i got stuck was in a place i shouldnt had, it was one of my first times out and i was lookin around and it was a field full of slop. i thought, donut city, but i was wrong. it was slop sludge city. i went in slow(my problem) but i didnt want to go fast because i was afraid something was gonna drag. how deep do you have to go to get something dragging or hitting? i prob shouldve dropped my air pressure but i didnt think it looked like anything. i guess i shouldve just pinned it but i was too scared i was gonna kill my truck
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As i said earlier, in manual 1st it adds ANOTHER holding device in 1st gear so it is distributing the load more in 1st gear. Off-road is alot more demanding torque wise than easy driving on the street. I never come out of manual 1 unless on an access road to get to the trail.
And there is only so much engine braking from an auto tranny and a 2.3 (correct me if i am wrong) low range.
And there is only so much engine braking from an auto tranny and a 2.3 (correct me if i am wrong) low range.
#12
Originally Posted by 034x4
When i'm on the trail i always use manual low. In our trannies drive 1st only has a one way clutch holding the rear i think sun gear so when slowing down you have no engine braking, which means better gas mileage. In manual 1st there is a clutch band that grabs the drum on the one-way clutch to hold it in both directions which gives you engine braking and another holding device so as not to wear out the one-way clutch as fast. Especially off-road since there is a higher torque load normally being put on the tranny and drivetrain.
manually selected "1" position: 1st gear only/engine braking
(safety lockout above calibrated speed)
manually selected "2" position: 3rd gear only/engine braking
OD cancelled: 1st through 4th gear allowed/engine braking in 4th gear only
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