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Old 12-30-2010, 06:26 PM   #21
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Quote:
Originally Posted by jandrews View Post
I kind of take issue with this. If traction is high enough that locking the diff makes steering problematic, you don't need to lock the diff.

Correctly used lockers would not cause steering problems.


Regarding the OPs subject, here's a breakdown of what each drive system turns into on 2nd gen tacomas if one tire loses traction:

2wd = 0wd.
2wd w/ mechanical limited slip = 1wd if/when LSD engages.
2wd with electronic limited slip = 1wd with limited applied torque on slipping axle.
2wd w/ locker = 1wd with full applied torque on slipping axle.
4wd = 2wd.
4wd w/ mechanical limited slip = 3wd if/when LSD engages.
4wd w/ electronic limited slip = 3wd with limited applied torque on slipping axle.
4wd w/ lockers = 3wd with full torque applied on slipping axle.
4wd w/lockers=4wd. 4wd/locker=3wd all of this is assuming the tcase is essentially locked as it is in part time 4wd vehicles.

Probably just a simple mistake but it could cause some confusion or maybe I'm the confused one


Quote:
Originally Posted by Lrgrnr View Post
Lol, that's pretty good. But I have yet to find one nor have I yet to get on a soap box and yell that my stock tacoma was a crawler and that it is unstopable.
He must have gotten it really far in then




You know I'm just screwing with you but I am trying to lighten the mood. It doesn't get very far to argue with each other or at least if history has anything to prove you won't gain anything.
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Old 12-30-2010, 06:29 PM   #22
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Old 12-30-2010, 06:30 PM   #23
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Quote:
Originally Posted by Jason'sLawnCare View Post
4wd w/lockers=4wd. 4wd/locker=3wd all of this is assuming the tcase is essentially locked as it is in part time 4wd vehicles.

Probably just a simple mistake but it could cause some confusion or maybe I'm the confused one
You're the confused one. Read the assumptions again. This is for single wheel loss of traction in 2gen Tacomas. Two locked axles on a 2nd gen taco - one wheel with loss of traction = 3 wheels driving the truck all with full torque.

Other situations will obviously be different. Just trying to break is down fast n easy for the OP. If he really wants to decode everything, he needs to learn more about the systems themselves and problem solve on the fly himself.


But I still <3 you.
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Old 12-30-2010, 06:33 PM   #24
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Everyone is just fail wrong. The best way to get any traction is to power the front wheels until they start slipping. Then send some power to the rear wheels. No one knows anything around here. Jeeze.
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Old 12-30-2010, 06:34 PM   #25
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Quote:
Originally Posted by jandrews View Post
You're the confused one. Read the assumptions again. This is for single wheel loss of traction in 2gen Tacomas. Two locked axles on a 2nd gen taco - one wheel with loss of traction = 3 wheels driving the truck all with full torque.

Other situations will obviously be different. Just trying to break is down fast n easy for the OP. If he really wants to decode everything, he needs to learn more about the systems themselves and problem solve on the fly himself.


But I still <3 you.
Assumptions hmmm? The only assumption I read was jumping to the juicy part(the list) would suffice. I guess I made an ass out of myself.
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Old 12-30-2010, 06:36 PM   #26
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Quote:
Originally Posted by Lrgrnr View Post
I pour sand in my diffs to get them to lock up.
Synthetic?
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Old 12-30-2010, 06:41 PM   #27
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Fuck it. Just weld it front and rear.
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Old 12-30-2010, 06:46 PM   #29
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Quote:
Originally Posted by Lrgrnr View Post
Weld the 2 axles to the driveshaft right?

Nah fool, to the frame

That way you don't have to worry about the weak TRD OR rear end grenading...your axles will still stay on the truck!
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Old 12-30-2010, 10:14 PM   #30
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Quote:
Originally Posted by jandrews View Post
Fuck it. Just weld it front and rear.
hit the middle diff while you guys are at it
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Old 12-30-2010, 10:39 PM   #31
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It would be fun to be able to make a cartoon showing the four tires each over differing surfaces (ie. traction or no traction) and/ or on the ground and in the air.

1) A 2WD open diff. would stop moving if one rear tire is in the air or in slush.

2) A 2WD limited slip diff. would slow or stop briefly until torque transfered to the traction tire. It's forward movement would depend on road conditions.

3) A 2WD locking diff. would continue rolling, unless the heavy front end was sunk into slush or sand.

4) A 4WD with open diffs. would stop moving only if one rear AND one front tire is in the air or slush. Engine weight over the front drive tires helps achieve traction.

5) A 4WD with limited slip (front and rear) would slow or stop briefly in slush as torque transfers to traction tires... it's ability to continue may be obstructed by steepness or traction since limited slip may not split torque equally giving enough power to the traction tires.

6) A 4WD with a rear locker and open front diff. will almost always get through or up hills beyond open differential 4WD. Both rear tires rotate equally, at least one front tire rotates if it has less traction than the other.

7) A 4WD with front and rear lockers or A-TRAC will have torque divided equally to each tire insuring forward progress... even if just one tire has traction and the other three are in slush or in the air (as in high centered).
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Old 12-31-2010, 06:32 AM   #32
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Quote:
Originally Posted by jandrews View Post
Quote:
Originally Posted by Lrgrnr View Post
Weld the 2 axles to the driveshaft right?
Nah fool, to the frame

That way you don't have to worry about the weak TRD OR rear end grenading...your axles will still stay on the truck!
Winner ^^^^^
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Old 12-31-2010, 06:47 AM   #33
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Originally Posted by BlueT View Post
Winner ^^^^^

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Old 12-31-2010, 06:53 AM   #34
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Originally Posted by jandrews View Post
It is very funny post
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Old 12-31-2010, 06:58 AM   #35
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Quote:
Originally Posted by David K View Post
J, when off roading... the locker will be great if traction is not even under both tires... when off roading, traction conditions constantly change... you need the locker only briefly when one tire loses traction... but since lockers are manually activated, the driver usually will lock the differential and leave it that way until he feels he no longer needs it. During that time, he may have a need to turn his steering wheel (you think?)... and the traction may not be so bad at that moment.

This is why A-TRAC is so awesome... you get the locking action only when you need it, just when a tire begins to spin... and it is on all four tires, not just the rear like the locker is.
Yeah but its not locking action..
Try it... put your truck on 20 degree incline all iced up. Then try driving up.
if it was true what you saying all 4 wheels would rotate at exact same speed just like lockers do. And we know already that they will not because system needs one tire rolling for measurement.
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Old 12-31-2010, 08:16 AM   #36
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Quote:
Originally Posted by BlueT View Post
It is very funny post
I find it humorous mainly because most of the grenaded diff reports I've seen have involved misuse of the diff. I'm still not of the persuasion the e-locked rear is any weaker than the non-locked. Yes, it's a smaller diameter, but they could've easily used a stronger metal alloy to offset that.

Until I talk to Toyota's engineers, I'm not making a call on that one.
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Old 12-31-2010, 09:03 AM   #37
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Quote:
Originally Posted by BlueT View Post
Yeah but its not locking action..
Try it... put your truck on 20 degree incline all iced up. Then try driving up.
if it was true what you saying all 4 wheels would rotate at exact same speed just like lockers do. And we know already that they will not because system needs one tire rolling for measurement.
First off, I never said 'exact same speed'... the A-TRAC will brake a loose tire to match a traction tire's rotation, if different... This distributes torque to both tires per axle, instead of just the loose one.

It is 'firmer' or 'stronger' at braking the tire than TRAC or limited slip does... and so provides the traction abilty of lockers... which ALSO match tire rotation across the axle... and yes lockers do so without any slippage or noise... but in the end, both vehicles get there.. and A-TRAC comes on our Off Road Tacomas at no extra cost... Front lockers do not.

Now, as far as seeing the tires rotate at the same speed in low traction conditions... I guess you haven't looked at the video clips in my thread on A-TRAC?: This one is an FJ with fully inflated tires... never gets stuck.. but you can easily see true four wheel drive working with A-TRAC on:

http://www.youtube.com/watch?v=_VHxs...layer_embedded
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Old 12-31-2010, 11:04 AM   #38
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Quote:
Originally Posted by David K View Post
It would be fun to be able to make a cartoon showing the four tires each over differing surfaces (ie. traction or no traction) and/ or on the ground and in the air.

1) A 2WD open diff. would stop moving if one rear tire is in the air or in slush.
been there, done that
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Old 12-31-2010, 12:23 PM   #40
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Quote:
Originally Posted by Jason'sLawnCare View Post
Yeah seriously. I really don't care who's truck can do what with something. Just go out and have fun but stay safe.
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