19 respuestas en este tema

[capitansfinter]

Bueno despues del problemilla con el grupo, quizas me anime a poner un Quaife y queria opiniones, si os quedais con el torsen de serie o pondrias un Quaife.
Saludos

[gomez619]

Como apunte, el quaife lo monta el focus rs nuevo 300cv delantera... y dicen que es impresionante... Luego de esto ni idea.... xdxd

[Storm]

Bueno despues del problemilla con el grupo, quizas me anime a poner un Quaife y queria opiniones, si os quedais con el torsen de serie o pondrias un Quaife.
Saludos

-Publicidad:
http://www.autotech....aife/index2.htm

The Quaife torque biasing differential enables your car to accelerate quicker and corner faster. How?
By getting the power to the ground!

The Quaife Differential powers both drive wheels under nearly all conditions, instead of just one. With an ordinary open differential, standard on most cars, a lot of precious power is wasted during wheelspin under acceleration. This happens because the open differential shifts power to the wheel with less grip (along the path of least resistance). The Quaife, however, does just the opposite. It senses which wheel has the better grip, and biases the power to that wheel. It does this smoothly and constantly, and without ever completely removing power from the other wheel.

In drag-race style, straight-line acceleration runs, this results in a close to ideal 50/50 power split to both drive wheels, resulting in essentially twice the grip of an ordinary differential (they don't call open diffs "peglegs" for nothing).

In cornering, while accelerating out of a turn, the Quaife biases power to the outside wheel, reducing inside-wheel spin. This allows the driver to begin accelerating earlier, exiting the corner at a higher speed.

The Quaife also controls loss of traction when the front wheels are on slippery surfaces such as ice and snow or mud, providing the appropriate biased traction needed to overcome these adverse conditions. The Quaife Differential provides constant and infinitely variable drive. Power is transferred automatically without the use of normal friction pads or plates seen in other limited-slip designs.

The Quaife's unique design offers maximum traction, improves handling and steering, and puts the power where it is needed most. A definite advantage whether on the track or on the street.

The Quaife is extremely strong and durable and since the Quaife is gear operated, it has no plates or clutches that can wear out and need costly replacement.

The Quaife is great for street driving or racing. Racers don't have to put up with locking mechanisms or spools that created unwanted understeer under power, or in the case of front-drive cars, even tear the steering wheel out of their hands when cornering. Because it behaves like an open differential during ordinary driving, street drivers will have trouble telling it's there until pushing the car's limits.

The Quaife has been proven in everything from SCCA Rally to Formula 1. It provides autocrossers with such an advantage, it has become "required" equipment for a winning effort.

More and more auto manufacturers are specifying the Quaife ATB Differential as original equipment in their high performance models - for good reason - it works!

The Quaife ATB Differential comes with something else other's don't have:
a Limited Lifetime Warranty. This warranty applies even when raced !

http://www.quaife.co...SD-differential

Honda S2000 Quaife ATB Helical LSD differential
Product code: QDF14U
Catalogue Page: 5
Manufacturers: HONDA

£585.00 (Unit price exc. VAT)
Quaife ATB Helical LSD differential for Honda S2000 is suitable for Honda S2000 models. A direct replacement for the standard Honda open differential, the Quaife ATB Helical LSD differential transforms your car’s performance.

Unlike a conventional plate-style limited slip differential, the Honda S2000 Quaife ATB Helical LSD differential relies on gears rather than clutch plates for its operation. That means it is much smoother in operation.

The Honda S2000 Quaife ATB Helical LSD differential never locks harshly with a set pre-load of wheel slip across the driven axle, like a conventional LSD. Rather, the Honda S2000 Quaife ATB Helical LSD differential automatically biases the torque away from the spinning wheel across the axle, to a constantly varying degree, and never locks.

The Honda S2000 Quaife ATB Helical LSD differential has many benefits over a standard open differential, including maximising traction and minimizing wheelspin, eliminating torque steer and snatching in front wheel drive cars compared to conventional LSD units, and a maintenance-free design which retains the standard oil lubrication.

The Honda S2000 Quaife ATB Helical LSD differential is proven in circuit and drag racing, rallying and road use, and is produced from Corus steel billets, and is CAD designed and CNC machined, then inspected to ISO 9001 standards.

With over 170 applications, the Quaife ATB Helical LSD differential is second to none. Accept no imitations!

Quaife ATB Helical LSD differentials are used by Ford, General Motors and Daimler-Chrysler as original equipment.

The Quaife ATB Helical LSD differential for Honda S2000 is also now subject to a lifetime warranty (subject to terms and conditions).

Please confirm your application using the attached techncial drawing.

-Teoría:
http://www.houseofth...als.htm#quattro

Quattro, Quaife, Torsen, Peloquin: (Torque Biasing Differentials)
Audi's Quattro (Audi's marketting name for all their AWD systems) using Torsen and the popular aftermarket Quaife systems use a set of worm gears inside the differential in place of the simple bevelled spider gears, which bind up when there's a resistive torque imbalance. That means, as long as both sides show equal resistance then they are free to rotate at different speeds, such as when going around a turn.
The whole thing is often called a "Torsen" system as in "Torque Sensing" (Torsen is actually a registered trademark, and the more generic term is Torque Biasing Differential or TBD) because it instantly reacts to torque imbalance transferring torque to the wheels that can use it most. There's a difference between the two main types of torque biasing diffs. Quattro's Torsen diffs used something developed by Gleason called invex gearing which is is really all about worm gears. A torque imbalance causes it to *try* to turn the low traction output shaft faster than the higher traction side, but that would cause the invex spider gears to turn, and they drive worm gears which have a greater mechanical advantage (due to the angle of the teeth) than the output sun gears have on the worm gears. That means that a multiple of the torque that would have gone to the low traction side actually goes to the high traction side. So if 20 ft-lbs of traction is at the low traction side, something like 80 ft-lbs goes to the side that can actually use it. A ratio of 4 to 1 or 5 to 1 is common but changing the gear teeth angles changes the ratio. The Quaife unit uses helical gears to accomplish very much the same thing, but the actual operation is not nearly as easy to understand. The helical gears float in pockets on the inside of the housing and apply radial and axial forces generated by the angle of the gear teeth. It can be tuned just like the invex gears to vary the torque ratio. Note however that without significant preload either torque biasing diff will not work well with a wheel completely off the ground. 0 ft-lbs time 4 is still 0. A simple braking trick helps though. (Note, the EDL system discussed above, actually works pretty well with a torsen diff. It activates rarely, but allows for much greater torque transfer when it does.) For this reason, they're rarely found on offroad 4x4 vehicles, the notable exception being the original Hummer H1, which has a note in the owner's manual explaining how to use the brakes and gas at the same time, should one or more tires be off the ground (as is not uncommon while offroading).

It is capable of going from an open differential to say 60% locked differential condition absolutely instantly (zero lag), so many would argue that it's about as close to perfecto as it gets for performance driving. There are no clutches to wear out. Several AWD systems like the Audi Quattro system put a torsen diff in the center of the car to control slip between front and rear wheels. This system does not have the problem the VC does with the ABS. A torsen diff only distributes torque when it's under load. When it's freewheeling all the wheels can turn at different speeds as the ABS may desire.
(Note: The current Audi Quattro system only uses the torsen diff in the center, and some other LSD or just EDL at the axles. )

The disadvantages are that the mechanism is a bit heavier (in rotating mass, where it counts more), more mechanically complicated than some, is expensive, and can't be tuned or adjusted dynamically. Plus, it reacts so fast and is so even handed that it literally makes a torque biasing diff equipped AWD car a little boring when you'd really like to hang it all out. If you want to go 100mph in the snow nothing beats Quattro. A system that'll let you change the torque bias between front and rear dynamically will usually be more fun though.

BTW, I do think that a Torque Biasing Differential in a front wheel drive car is a good thing. If you plan on putting a blower on your engine, get a Torque Biasing Diff . . If you worry about EDL hammering and TFS a lot, get a torque biasing diff. It'll help you put down power on a twisty road, and reduces torque steer. I finally bought a TBD from the machinist Gary Peloquin (mechanically similar to the Quaife) that made my FWD GTI VR6 a joy to drive fast around sharp corners while full on the throttle, which is not normally fun in a higher powered FWD car.

So there it is.

-Te recomiendo leer:
http://www.google.es...vs Torsen&meta=

Así de primeras leo:
"Between the two cars, the Torsen car handled the best..."
"Between the two, I still prefer the Torsen..."

P.D: De esto ya se habló en su momento y lo que mosquea es que ya son DOS los fabricantes de diferenciales que se refieren al del S como OPEN cuando no lo es (es un LSD de tipo Torsen). Pura propaganda?

[deibit]

A simple vista yo diria que el quaife y el torsen son basicamente lo mismo pero con diferente nombre (marca/patente)

[Storm]

-Te recomiendo leer:
http://www.google.es...vs Torsen&meta=

Así de primeras leo:
"Between the two cars, the Torsen car handled the best..."
"Between the two, I still prefer the Torsen..."

P.D: De esto ya se habló en su momento y lo que mosquea es que ya son DOS los fabricantes de diferenciales que se refieren al del S como OPEN cuando no lo es (es un LSD de tipo Torsen). Pura propaganda?

Ejem...

http://forums.focalj...nswer-here.html

Any Porsche we build for track purposes, Solo1 or any type of racing where high speed corners in higher gears are encountered, we run plate-type LSDs. on say an AutoX or street driven Porsche we'll suggest or run a ATB(Torsen/Quaife).

again, depending on the driving you are doing one dif will always be limited in a certain area.
if you look at a lot of the drift guys, cornering speeds are not that high but most of them use a plate-type dif to get lockup so they can break both wheels away equally. some may even run Spools but that's beside the point.

with plate type difs you can alter the dif-action under things like accel, coast and i think decel(i'm not the guy who handles dif setup here) again to suit the type of driving you are doing.

in the focus world, simply because there are no serious plate-type difs on the market as an option, everyone just defaults between the quaife and the torsen. imho, neither is better nor worse than the other. like everything, people try ONE thing and then preach that it's the "bee's Knee's". the people who have driven both in a high performance situation may not but usually can tell there is little difference between the 2 all testing being equal which is why a lot of people opt for the "cheaper price or lifetime warranty" angle.

having built and driven Focus' with both quaifes and torsens, i really don't see a difference in how they work between the 2, just in how they allow cars to power out of corners vs a stock diff. i'll install which ever the customer wants but wont suggest one over the other... i opt-out for the "cheaper price, lifetime warranty" angle, and let the customer choose!
i know some places push one over the other but usually that's simply a profit margin reason or they don't carry the other and want you to buy a LSD from THEM!

[Lluiset2]

¿De que material son los discos del LSD?, ¿vida util?...Nein has pensado llamar a los de J´s a ver si te patrocinan algo por coche stand

[Touge Master]

Quaife=Torsen
El autoblocante de discos de J'S Racing será, como suele ocurrir con esta marca, uno de otra marca cambiado el nombre. Ha dado algunos problemas de excentricidad.
Buenas opciones son OS Giken y Carbonetics ambos con discos de carbono, mucho más duraderos que los cerametálicos. En segunda división juegan Cusco y Kaaz.

[Storm]

Quaife=Torsen

Ambos funcionan de la misma forma (piezas helicoidales) pero ambos tienen el mismo ratio y están pensados para el mismo uso (por la durabilidad)? Me refiero al de serie y al Quaife. Serían EXACTAMENTE iguales? Diferencia de precio?
Por qué c*****s hay tanto secretismo (y mentiras) sobre este tema en la publi de los fabricantes aftermarket?

[deibit]

si que esta patrocinado el coche por J,S , no es coña

Pues como se enteren que llevas una pegata Mugen...

[Touge Master]

Ambos funcionan de la misma forma (piezas helicoidales) pero ambos tienen el mismo ratio y están pensados para el mismo uso (por la durabilidad)? Me refiero al de serie y al Quaife. Serían EXACTAMENTE iguales? Diferencia de precio?
Por qué c*****s hay tanto secretismo (y mentiras) sobre este tema en la publi de los fabricantes aftermarket?

Exactamente iguales no son. Son muy muy aproximados en diseño y funcionamiento. El Torsen tiene algo más de capacidad de bloqueo que el Quaife, en el caso del S2000 no sé los números exactos pero en otros coches suele ser 2.5:1 para el Quaife y 3:1 para el Torsen. Realmente no hay mucha diferencia entre ambos, en teoría el Quaife induciría menos subviraje a la entrada de la curva pero tendría aportaría menos capacidad de tracción que el Torsen.
Ambos funcionan como un diferencial abierto en el caso de que una de las ruedas pierda apoyo con el suelo.

Editado por Touge Master, 23 septiembre 2009 - 09:08:45.

[Haccord]

Quaife=Torsen
El autoblocante de discos de J'S Racing será, como suele ocurrir con esta marca, uno de otra marca cambiado el nombre. Ha dado algunos problemas de excentricidad.
Buenas opciones son OS Giken y Carbonetics ambos con discos de carbono, mucho más duraderos que los cerametálicos. En segunda división juegan Cusco y Kaaz.

Al menos en mi K-Series no ha dado ningun problema

[Touge Master]

Al menos en mi K-Series no ha dado ningun problema

¿La mediste?

[capitansfinter]

ummm, pensaba que el quaife iba por discos pero por lo visto son parecidos, entonces me quedo con el torsen.

[Amuse]

Quaife es una marca en concreto y torsen el tipo, osea que los Quaife estan en grupo de los torsen. Torsen es el acronimo de torque-sensing y el principal problema, es que si la rueda se despega del suelo actua como un diferencial abierto. Los de discos como decis, mejor los de carbono, por durabilidad y ruido cuando estan frios.

Saludos.

[kenwood]

epaa, hey

 

 

un osgiken super lock mejoraria mucho el paso por curva, esta clarísimo, lo estoy deseando!!!!

 

 

https://www.s2ki.com...review-1144878/

 

 

 

 

tendríamos un mejor coche mucho mas estable para carreteras bien viradas donde la rueda interior lo nota mucho con el diferencial abierto, mejor traccion, el coche se cruzaría menos por defecto. estoy planteándome la posibilidad de mejorar el coche con esa pieza, es muy peligroso de atrás el coche si te animas un poco, aunque yo desactivo el VSA imagino que dejaría de funcionar con el LSD. un saludo

[Storm]

epaa, hey

un osgiken super lock mejoraria mucho el paso por curva, esta clarísimo, lo estoy deseando!!!!

https://www.s2ki.com...review-1144878/

...

tendríamos un mejor coche mucho mas estable para carreteras bien viradas donde la rueda interior lo nota mucho con el diferencial abierto, mejor traccion, el coche se cruzaría menos por defecto. estoy planteándome la posibilidad de mejorar el coche con esa pieza, es muy peligroso de atrás el coche si te animas un poco, aunque yo desactivo el VSA imagino que dejaría de funcionar con el LSD. un saludo

 

https://www.s2ki.com...2/#post23881042

 

An OSG car requires distinctly different throttle application compared to the factory diff. The Torsen is open on turn-in, or off throttle, allowing large variations in attitude through the early phases of the course. If throttle timing is wrong, the car oversteers. The OSG trailbrakes like a boss. The braking can be pushed deeper without fear of oversteer, and the longer I wait off throttle the more rotation I see. It is harder to "dance" the OSG, especially on the RE-71Rs, but it is so consistent and predictable that it more than makes up for it with extra throttle.

You will not be immediately faster by installing an OSG. However, it gives you opportunity for more throttle and better car stability and that will yield lower times.

[kenwood]

pd: tras leerme este documento entero, estoy convencido de que es mejor instalarlo. 

 

esta muy interesante, se los dejo

 

https://8000vueltas....-general-1-de-2 parte 1

https://8000vueltas....nduccion-2-de-2 parte 2

 

 

quizás este no es el post correcto para este autoblocante.

 

 

miren esto q pasada https://honda-tech.c...giken-lsd-tech/

 

 

un saludo fuerte propietarios del S2000 !!!!

 

 

 

 

teoría toda leida http://www.aficionad...utoblocante.htm

 

 

 

 

 

estoy euforico con el LSD, otro saludo!!

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