so if i follow you correctly the sport doesn't have stabilitrac because it has a posi? actually asking not sarcastic.
no, a well set up posi only makes the tires spin at the same rate off road. but in high traction situations it will allow individual wheels to rotate faster for turning. so traction control can still be in place and working
its not ONE OR THE OTHER... But I understand you saying you would rather have electronic over mechanical if asked. But my old high hp twin turbo cummins didn't have traction control and would spin its posi dana 80 getting onto the freeway. I never once thought trac would be nice
btw, abs sucks off road, where sometimes you need to lock the tires to dig in and stop faster (terrain dependent)
and you're disregarding the fact that a brake system doesn't solve the problem with an open diff. power flows through the path of least resistance. so you have to brake a wheel hard enough to make the other wheel have equal or less traction (less traction is way more likely) so you're just throwing torque left and right and not splitting it to both wheels equally. which a clutch pack or gears or mechanical locker can do.
but in ice, having one wheel spin instead of two is better, you sway around far less.
so you may be correct if you're trying to state no system has no downfalls
but for this threads sake, auto lsd is a cheap gimmick that can't match the off road performance of a true lsd.
and I don't allow any vehicle stability control on my vehicles off road, it has never saved me, only compounded problems.
moggie? the mercedes unimog?
Originally Posted by 127.0.0.1
well yeah but no also
having the systems in place that can do AutoLSD via braking means
you also have other trac and stability modes a posi cannot do for you
so, yea focusing on just what is happening in the pumpkin, fine, posi
is better than autoLSD...but I will take autoLSD and the brake controller
system over any old-skool non-computerized any day any where.
Unless you are talking about a moggie. I would take a moggie and throw my Taco away
in a differential, you have gears called spider gears that allow the axle shafts to spin in opposite directions... it sits inside a unit that houses it and is connected to a ring gear which is spun in one direction via a pinon (driven directly from the driveshaft). when wheel spin occurs, one shaft stays still, while the until spins around it, the spider gears will now do there thing and let the other shaft spin in the OPPOSITE direction which is forward.
imagine all that coming to an abrupt halt, and all the power must be transmitted through the spider gears, for thats where the power is transmitted via when you have wheel spin.
a posi, its a clutch pack and springs that sits inside the spider gears and pushs against everything to attempt to make them spin together, or resist spinning away from each other.
auto lsd can get you unstuck, it tries to use the best wheels higher friction coefficient. but can't use both wheels in tandem like a true lsd
Originally Posted by prerunner11
I don't want to derail this thread, but I'm not following you on the part saying that AutoLSD stresses the "system". Other than the brakes which are being used in the 09+ tacoma's to create an LSD, how is it putting any more stress on any of the parts than any other circumstance? The path of least resistance is changed for the power, so most (if not close to all) goes to the non-spinning wheel on the axle.
Back on topic...I know I've read it on here before but don't remember specifics. People have said that they were stuck, couldn't get 4wd to engage, and AutoLSD got them unstuck. Anyone with similar experiences?
the braking system on any car would not need to be beefed up. stopping a car 4000lbs at 100mph would incur exponential amounts of heat than slowing a spinning wheel.
they may have, but it is unnecessary to do so.
and you're skipping the inherent problem that these systems can compromise your axles longevity.
its cheap, a true lsd will stress the strong parts of your axle, but auto lsd directly stresses the biggest weakness which is the spider gears, they are physically much smaller and when wheel spin is occurring they can't stress the center section enough to alleviate there own stress and will break prematurely.
this is what typically breaks when people do 1 wheel wonder burn outs.
when you have equal traction, the spider gears lock the axles together and the center section will propel you, and when one wheel losses traction, the spider gears will start to spin.
i would rather replace a clutch pack than the internal gears of my diff because I wanted a cheap and effective auto lsd
look at this
Originally Posted by David K
The brakes of our trucks (and most cars) are made to be used much greater than we will ever need to (we hope). The brake pads are a relatively easy item to replace and part of the normal maintenance. Using the strongest component to achieve better traction is smart.
Putting extra strain on gears, that are far more expensive to replace, doesn't seem as wise, and a bit old fashion with this new traction technology being so widely utilized by top auto manufacturers.
Maybe instead of insulting Toyota technology with your Mall comment, you should accept that tens of thousands of Tacomas made after yours has AUTO LSD and TRAC, while the mechanical LSD was discontinued before 2009.