Anyone make a Torsen diff. for the 5.5 gen?
Does anyone make a Torsen differential for the 5.5 gen? Something similar to a Quaife ATB diff. is what I'm looking for.
I'm not able to search and I've already googled it with no success, so don't bother flaming me. Any/all help in this matter is appreciated! Thanks much. |
helical = torsen, AFAIK...
stock unit. yay for 5.5gens... |
Are you sure that helical = Torsen (tor-que sen-sing)?
Does the stock diff. apportion torque left to right according to available traction in real-time/before actual wheel-slippage occurs like the Quaife does? |
I believe that is correct. Torsen is just one company's brand name for the HLSD. Prior to the 5.5 gens, the LSDs were of the viscous type.
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Really? First I thought they were called ATB diffs like Quaife's automatic torque biasing diff., then I learned that Quaife was just a brand.
Now I'm being told that they're called Torsen type diffs. Hopefully I've got it right this time! lol So for they record, they're called HLSD's (for helical limited slip diffs), right? Thanx much! Any personal experience with it? |
Originally Posted by MaxesRule
Any personal experience with it?
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Really? How so? What does the car feel like?
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i could tell you by looking at it if its torsen/zexel... ive got one for my truck sitting in my kitchen :D
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Originally Posted by jmt9n
With the OEM crappy tires, it's easy to tell that the HLSD is there when you take off quickly in wet conditions in first gear.
Theoretically, if you applied power to a HLSD in slippery conditions, it will act like an open diff. You wouldn't be able to tell the difference. The reason is because the HLSD is a torque-sensing system. It reacts to torque loads placed on the system, which binds up a set of gears riding on a helical bias, which binds up the diff. :russ: What that means to you is that if you lose traction in one or both wheels, the HLSD no longer senses any torque on the system and the gears won't lock up the diff. This is the opposite of a VLSD, which senses inequalities in wheel speed. These will lock up in slippery conditions if one wheel lose traction, but not if both wheels slip at the same rate. |
Originally Posted by MaxesRule
Really? First I thought they were called ATB diffs like Quaife's automatic torque biasing diff., then I learned that Quaife was just a brand.
Now I'm being told that they're called Torsen type diffs. Hopefully I've got it right this time! lol So for they record, they're called HLSD's (for helical limited slip diffs), right? Thanx much! Any personal experience with it? |
Originally Posted by bigEL
Theoretically, if you applied power to a HLSD in slippery conditions, it will act like an open diff. You wouldn't be able to tell the difference. The reason is because the HLSD is a torque-sensing system. It reacts to torque loads placed on the system, which binds up a set of gears riding on a helical bias, which binds up the diff. :russ: What that means to you is that if you lose traction in one or both wheels, the HLSD no longer senses any torque on the system and the gears won't lock up the diff. This is the opposite of a VLSD, which senses inequalities in wheel speed. These will lock up in slippery conditions if one wheel lose traction, but not if both wheels slip at the same rate.
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Torsen is a TYPE of lsd.
here are some linx explaining tis stuff: http://www.houseofthud.com/differentials.htm http://www.answerbag.com/q_view.php/1737 http://web.mit.edu/2.972/www/reports...ferential.html |
Originally Posted by bigEL
Are you stating that as a fact borne from personal experience or mere conjecture?
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Originally Posted by MaxesRule
Really? How so? What does the car feel like?
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Originally Posted by Stereodude
That's not entirely true. If there is no resistance (like the car jacked in the air) then it will act like an open diff, but as long as there is a little bit of resistance on the wheel that's on the slippery stuff the gears will engage and route the torque accordingly.
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thats called torque bias. :)
Originally Posted by chr0nos
Torsen is a TYPE of lsd.
THANK you... :) Torsen bought zexel, or the other way around. the name is synonymous with a helical gear locking differential. they invented it, AFAIK... |
Torsen = Torque Sensing
Helical = The gears in the diff are cut in a helical pattern ATB = Automatic Torque Biasing LSD = A diff that doesn't let one wheel spin faster than the other by more than a certain amount Any diff labelled "Quaife", "ATB", "Torsen", or "Helical" does the same thing: It acts like an open diff (good for turn-in) until one wheel encounters more resistance than the other, at which point it takes torque away from the faster-spinning wheel and channels it to the slower-spinning wheel. Some are better than others, but they all have helical gears and they all redirect torque. They can also kill torque steer, and they will not die for a very, very long time. This is different from a plain LSD, like the viscous (VLSD) and clutch-type (e.g. Cusco, Kaaz, Phantom Grip) diffs. Those will prevent one wheel from spinning out of control by limiting the amount that one wheel can spin without the other. They won't redirect torque, they can compromise turn-in, and they won't help torque steer much, but they're much simpler (i.e. cheaper) and can be less intrusive for things like drifting. NEITHER OF THESE TYPES IS ACTUALLY A "LOCKING" DIFFERENTIAL, no matter what anyone says. "Locking" is just a term that people throw around so they don't have to keep track of all the different kinds of non-open diffs. The diff types above will prevent traction loss, but they will NOT lock the wheels so that they spin together at exactly the same speed -- which is good, because that'd kinda suck for anything except going in a perfectly straight line on really bad surfaces. |
and rock climbing ;)
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Yes. Yes indeed.
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Originally Posted by d00df00d
Torsen = Torque Sensing
Helical = The gears in the diff are cut in a helical pattern ATB = Automatic Torque Biasing LSD = A diff that doesn't let one wheel spin faster than the other by more than a certain amount Any diff labelled "Quaife", "ATB", "Torsen", or "Helical" does the same thing: It acts like an open diff (good for turn-in) until one wheel encounters more resistance than the other, at which point it takes torque away from the faster-spinning wheel and channels it to the slower-spinning wheel. Some are better than others, but they all have helical gears and they all redirect torque. They can also kill torque steer, and they will not die for a very, very long time. This is different from a plain LSD, like the viscous (VLSD) and clutch-type (e.g. Cusco, Kaaz, Phantom Grip) diffs. Those will prevent one wheel from spinning out of control by limiting the amount that one wheel can spin without the other. They won't redirect torque, they can compromise turn-in, and they won't help torque steer much, but they're much simpler (i.e. cheaper) and can be less intrusive for things like drifting. NEITHER OF THESE TYPES IS ACTUALLY A "LOCKING" DIFFERENTIAL, no matter what anyone says. "Locking" is just a term that people throw around so they don't have to keep track of all the different kinds of non-open diffs. The diff types above will prevent traction loss, but they will NOT lock the wheels so that they spin together at exactly the same speed -- which is good, because that'd kinda suck for anything except going in a perfectly straight line on really bad surfaces. |
H Limited slip for automatics
I have a 2003 max automatic and no LSD. Is there a way to add LSD to the car? Who would sell it?
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Originally Posted by BKmax20003
(Post 6033086)
I have a 2003 max automatic and no LSD. Is there a way to add LSD to the car? Who would sell it?
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Originally Posted by jmt9n
(Post 3606528)
It's not easy to describe the feeling (for me at least). Generally, one tire slips for a split second and then stops because the HLSD kicks in. I've only done it a few times on accident (usually on hills when it's wet), but I can tell a difference compared to a car without one. You can also tell when accelerating rapidly in curves.
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I know I'm getting ready to comment on a 2yo post, bite me.
Originally Posted by jmt9n
(Post 3606528)
Generally, one tire slips for a split second and then stops because the HLSD kicks in.
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