AJR CRZ x Mfactory **LSD & Final Gear installed**

[Synapz]

Originally Posted by Eagle_f90

Whats so funny? Sorry I am not fully informed on the workings of LSDs as you apparently are. Care to enlighten me?

a quick search in wiki will help you out...

Limited slip differential - Wikipedia, the free encyclopedia

[Eagle_f90]

Originally Posted by Synapz

a quick search in wiki will help you out...

Limited slip differential - Wikipedia, the free encyclopedia

And if you read that artical there is no talk about the differences when it comes to a Geared LSD, which this one appears to be.

[Swankins]

Originally Posted by Eagle_f90

And if you read that artical there is no talk about the differences when it comes to a Geared LSD, which this one appears to be.

"Geared LSDs respond to driveshaft torque, so that the more driveshaft input torque present, the harder the clutches or cones or gears are pressed together, and thus the more closely the drive wheels are coupled to each other. Some include spring-loading to provide some small torque so that with no / little input torque (trailing throttle/gearbox in neutral/main clutch depressed) the drive wheels are minimally coupled. The amount of preload (hence static coupling) on the clutches or cones are affected by the general condition (wear) and by how tightly they are loaded.

Broadly speaking, there are three input torque states: load, no load, and over run. During load conditions, as previously stated, the coupling is proportional to the input torque. With no load, the coupling is reduced to the static coupling. The behavior on over run (particularly sudden throttle release) determines whether the LSD is 1 way, 1.5 way, or 2 way.

If there is no additional coupling on over run, the LSD is 1 way. This is a safer LSD: as soon as the driver lifts the throttle, the LSD unlocks and behaves somewhat like a conventional open differential. This is also the best for FWD cars, as it allows the car to turn in on throttle release, instead of plowing forward.[2]

If the LSD increases coupling in the same way regardless of whether the input torque is forward or reverse, it is a 2 way differential. Some drifters prefer this type as the LSD behaves the same regardless of their erratic throttle input, and lets them keep the wheels spinning all the way through a corner. An inexperienced driver can easily spin the car when using a 2 way LSD if they lift the throttle suddenly, expecting the car to settle like a conventional open differential.

If the LSD behaves somewhere in between these two extremes, it is a 1.5 way differential, which is a compromise between sportiness and safety." - WIKI


This is why people don't get answers to their question. They take no time to look up the information even when it's laid in front of them.

[Eagle_f90]

aaa, I over looked that section as it was under "Characteristics" right under "Torque-sensitive". If you look father down there is a dedicated area to "Geared LSD" which is what I read and as you can see does not mention the different 1/1.5/2 way states so instead of bashing someone how about just assuming they missed a bit of info?

Geared LSD
Audi Quattro Torsen DifferentialGeared, torque-sensitive mechanical limited slip differentials utilize helical gears or worm gears to "sense" torque on one shaft. The most famous versions are:

Torsen differential based upon the Dual-Drive Differential invented by Vernon Gleasman in 1958, then later sold to Gleason Corporation, who started marketing it in 1982;
Quaife differential, sold under the name Automatic Torque Biasing Differential (ATB), covered by European Patent No. 130806A2.
Eaton Corporation differential, sold under the name Eaton Detroit Truetrac.
Geared LSDs use worm gears rather than clutches of the clutch type and the cones of the cone type, and work by "multiplying" the torque from the slowest moving wheel to the fastest, rather than actively controlling slip.

In the case of slip, the wheel in contact can receive up to X times the torque applied to the wheel which is slipping, where X is the torque multiplication value for the differential. In this sense, torque sensitive differentials are not strictly limited slip - once an output shaft becomes free (e.g., one driven wheel lifts off the ground; or a summer tire comes over ice while another is on dry tarmac when the car goes uphill), no torque is transmitted to the second shaft and the torque-sensitive differential behaves like an open differential. A common trick in these situations, such as turning up a steep hill in a low sports car, is to apply slight pressure to the brakes (handbrake in the case of RWDs), allowing some torque to be applied to the raised wheel which will then be multiplied to the wheel in contact. Some torque sensitive differentials feature a bias plate, which allows some torque to be transmitted to the wheel in contact even when the opposite wheel has no traction.

Geared LSDs are more dependent on the torque and not on the speed difference between the output shafts (however the speed difference plays a part). Such differentials may not be adequate on extremely slippery surfaces such as ice (or thin air, when a drive wheel loses ground contact altogether).

Geared LSDs may be used:

to reduce torque steer in front-wheel drive vehicles;
as a center differential in four-wheel drive (e.g., on the Audi Quattro);
in rear-wheel drive vehicles, to maximize traction and make oversteer easier to manage (as in drifting). Although, for extreme drifting, a geared LSD is less effective compared to a clutch type LSD. Torque sensitive differentials are rarely used in Rally motorsports, however.

[alollini]

i read wiki before asking, my question about differences in LSD types is more feeling relateds in our case : the CR-Z

so back to topic,

questions why Spoon choose 1.5 metal plate LSD ? (is it track only ?)

I would like to know which choice of Mfactory LSD will suit my driving style best
with 4 or 5 days on a track per year and the rest of the year on twisty mountain roads in the Alps.

My questions are only how our specific car will react in curve to brakes or throttle pressure.

What would you choose for the road, every day ?

[TheGame]

Wow awesome project. Was wondering though if you've encountered any IMA recharging issues after installing the final drive?

[ArtJDM]

So how did this affect gas mileage after the install?

[OneFitZ]

Originally Posted by TheGame

Wow awesome project. Was wondering though if you've encountered any IMA recharging issues after installing the final drive?

This was asked on their facebook page yesterday. The answer was no. It'll act just the same.

Originally Posted by ArtJDM

So how did this affect gas mileage after the install?

My guess is slightly less MPG due to the slight increase of RPM. Worth it IMO for the performance boost though.

[alollini]

it is certainly worth it for 2/3/4 gears

the new Phase II model of 2013 has longer 6

and as in France cruising speed is 84 mph, a longer 6 is a good idea.

that would be great not changing the final, but only make shorter 2/3/4/5 ?
will be more expensive, but would be the best.

[Eagle_f90]

Am I correct in assuming the LSD would work fine in the 2013?