help with me a lsd or locker
- Thread starter 65notch
- Start date
jerry S
New Member
65notch said:
From what I have read, you want a locker if you mainly drag. If you road/ralley race, you want to go with a LSD. A locker can cause an understeer effect, something I would prefer to avoid if tear-a$$ing through the canyons.
FORCED2DV8
New Member
Each company makes a specific lsd or locker for a application, Look at different manufacture's, and see what they have, I would look for a LSD if thatw what your going to do with the car, check out Eaton, I have used there's before with good success.
jerry S
New Member
It's partly a matter of driving style. A locker is harsh in operation and can make the car change from understeer to oversteer with varying throttle application. It favors more "brutish" driving, sort of throw it into the corner, and and hang the tail on exit. A LSD, preferrably a torque biasing type, favors a smooth driving style. I don't think a heavily biased LSD gives up much in traction to a locker. Having said that, I haven't driven a Mustang with a locker, but I have in other vehicles. Just my .02.
For anyone who thinks a LSD gets as much traction as a locker I post this video.
EDIT: Plus I have seen countless LSDs lay down the peg leg burnouts, those clutches will eventually wear out, sooner or later depening on how much slipping you subject them to.
EDIT: Plus I have seen countless LSDs lay down the peg leg burnouts, those clutches will eventually wear out, sooner or later depening on how much slipping you subject them to.
geostang351
Member
Hmmmm. I don't know Edbert. That last guy approached the conveyor awefully quick compared to the others to convince me.
After all this, what does everyone recommend? I have an 8" with 3.00 open that I'd like to go to 4.11's with "double spinners" (both rear tires), only street use. I am very interested in this end result as well.
After all this, what does everyone recommend? I have an 8" with 3.00 open that I'd like to go to 4.11's with "double spinners" (both rear tires), only street use. I am very interested in this end result as well.
I'll say it again..IMHO...
Open = Honduh power levels and little-ole lady driving
LSD = modestly driven modestly powered street-only (what OEM uses)
Locker = agressive or high powered street and strip/track
Spool = race only (but I know guys who run them on street without complaints)
You just have to judge how willing you are to live with the strengths/weaknesses of the various options. It is similar to putting a high-lift high-duration cam in your car, it will become less "civilized" and "streetable", but if you are building for performance those are characteristics you are willing to give up for raw performance, same with a high-flow exhaust or big-arsed brakes. The term "locker" is often misunderstood to mean no-slip, it really is a bad term if you ask me, all lockers slip so they are really just a tighter LSD, and some lockers are softer than others.
BTW...this subject has been covered many times...
http://forums.stangnet.com/showthread.php?t=452687
http://forums.stangnet.com/showthread.php?t=564326
http://forums.stangnet.com/showthread.php?t=612482
Three out of a dozen that came out of a search...
Open = Honduh power levels and little-ole lady driving
LSD = modestly driven modestly powered street-only (what OEM uses)
Locker = agressive or high powered street and strip/track
Spool = race only (but I know guys who run them on street without complaints)
You just have to judge how willing you are to live with the strengths/weaknesses of the various options. It is similar to putting a high-lift high-duration cam in your car, it will become less "civilized" and "streetable", but if you are building for performance those are characteristics you are willing to give up for raw performance, same with a high-flow exhaust or big-arsed brakes. The term "locker" is often misunderstood to mean no-slip, it really is a bad term if you ask me, all lockers slip so they are really just a tighter LSD, and some lockers are softer than others.
BTW...this subject has been covered many times...
http://forums.stangnet.com/showthread.php?t=452687
http://forums.stangnet.com/showthread.php?t=564326
http://forums.stangnet.com/showthread.php?t=612482
Three out of a dozen that came out of a search...
geostang351
Member
geostang351
Member
Alright, I confess to not knowing what the insides of the true-trac look like so I just did some research. They use two sets of worm gears that enable differentiation based upon the slippage of the wheels, they are also called "hydrualic lockers". It is very hard to sift through what appears to be nothing more than marketing hype. I found this website to be very informative even though it (and many others I read) seem to focus heavily on offroad 4X4 applications. The only big drawback I have seen on the truetrac is that if one wheel loses traction enough it will spins as if you had an open diff, that is very easy to have happen in 4X4 land but much less likely in street/track driving as long as the pavement is dry. To be honest, from what I've read, and based upon the fact that there are no clutches or friction disks inside of it, that the trueTrac is more of a soft-locker like the Powertrax than a traditional "posi" or other brand of LSD. Remember what I said about lockers actually slipping themselves?steel1212 said:
This quote is another decent explanation of what I don't like about the LSDs.
I thought this one was succint.
Basically a locker will not allow either wheel to turn faster/slower than the ring gear, the true-trac will allow it to turn 0.5 or 2.0x once engaged (infinite before engagement), and a lsd or open will allow an infinite (pretty much) differential action.
Not a bad compromise for those who must drive in mud/snow a great deal or who fear the noise and brutish nature of a locker. DEFINITELY a better option than a positrac!
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