Decked Posted February 5, 2006 Report Share Posted February 5, 2006 Spoke to Shaun at Big Boys Toys the other day and he offered me one of these, unfortunately not for me at the moment but if anyone else is interested. Exchange basis, and I believe he'll have it fitted for free but not 100% on that. Original post http://www.uk-mkivs.net/forums/429811/ShowPost.aspx Link to comment Share on other sites More sharing options...
Mook Posted February 6, 2006 Report Share Posted February 6, 2006 Just stop it Decked As if I've not spent enough already Link to comment Share on other sites More sharing options...
Decked Posted February 6, 2006 Author Report Share Posted February 6, 2006 [ QUOTE ] Just stop it Decked As if I've not spent enough already [/ QUOTE ] Thats what i keep thinking.... No more...... Link to comment Share on other sites More sharing options...
N3WOB Posted February 6, 2006 Report Share Posted February 6, 2006 So what's the advantage of this diff? Heard of this but on the RS Focus when the motoring journalists were also talking about torque steer Link to comment Share on other sites More sharing options...
Mook Posted February 6, 2006 Report Share Posted February 6, 2006 OK, with the normal diff on a car - the torque will travel down the route of least resistance, so if you're cornering right, the inside wheel will tend to spin first. In layman's terms (if that's possible!) the Quaife diff effectively almost "locks" both driveshafts together, so that they both get equal drive in a straight line, but on the corners, it will let one wheel run slower, but no slower than the actual diff. Basically what you get is more grip They were a favourite on the old Capri 280s, because they were so prone to spinning one wheel and going nowhere... Link to comment Share on other sites More sharing options...
Mook Posted February 6, 2006 Report Share Posted February 6, 2006 And here's some more technical stuff for your Ross, old boy: The Quaife torque biasing differential enables your car to accelerate quicker corner faster. How? By getting power to 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 wasted during wheelspin under acceleration. This happens because open differential shifts power to wheel with less grip (along path of least resistance). The Quaife, however, does just opposite. It senses which wheel has better grip, biases power to that wheel. It does this smoothly constantly, without ever completely removing power from either 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 grip of an ordinary differential (they don't call open diffs "peglegs" for nothing). In cornering, while accelerating out of a turn, Quaife biases power to outside wheel, reducing inside-wheel spin. This allows driver to begin accelerating earlier, exiting corner at a higher speed. The Quaife also controls loss of traction when front wheels are on slippery surfaces such as ice snow or mud, providing appropriate biased traction needed to overcome these adverse conditions. The Quaife Differential provides constant infinitely variable drive. Power transferred automatically without use of normal friction pads or plates seen in over limited-slip designs. The Quaife's unique design offers maximum traction, improves steering, puts power where it needed most. A definite advantage whether on track or on street. The Quaife is extremely strong and durable since Quaife gear operated, it has no plates or clutches that can wear out 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 case of front-drive cars, even tear steering wheel out of the driver’s hands when cornering. Because it behaves like an open differential during ordinary driving, street drivers will have trouble telling it's there until pushing 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 Quaife ATB Differential as original equipment in their high performance models - for good reason - it works! Link to comment Share on other sites More sharing options...
R32Ash Posted February 6, 2006 Report Share Posted February 6, 2006 So the Quaife diffs being offered for sale are ATB rather than LSD? Edited to say: I've probably used the wrong smiley there really. I'm sure ATB is a far better option for the road. Link to comment Share on other sites More sharing options...
Decked Posted February 6, 2006 Author Report Share Posted February 6, 2006 [ QUOTE ] So the Quaife diffs being offered for sale are ATB rather than LSD? Edited to say: I've probably used the wrong smiley there really. I'm sure ATB is a far better option for the road. [/ QUOTE ] Shaun did mention LSD and it's the same as the one on the ATB website, i'm yet to find it on the website. If someone speaks to them that understands it slightly more they will be able to explain a lot better than me. Link to comment Share on other sites More sharing options...
Mook Posted February 6, 2006 Report Share Posted February 6, 2006 Quaife only list one part number on their site - 10.309.195 0 - ATB means Torque Biasing. http://www.quaifeamerica.com/differentials/diff_apps.htm Will speak to Shaun and see what the rub is... Link to comment Share on other sites More sharing options...
N3WOB Posted February 6, 2006 Report Share Posted February 6, 2006 Blimey Mooky, thank you Very informative The only thing that's missing is how to pronounce "Quaife", something like that rock n roll hairstyle? Link to comment Share on other sites More sharing options...
Mook Posted February 6, 2006 Report Share Posted February 6, 2006 You pronounce it "Kwayf", as opposed to "Quiff", which is more in line with that dodgy 80's hairstyle you used to have... Link to comment Share on other sites More sharing options...
N3WOB Posted February 6, 2006 Report Share Posted February 6, 2006 Look pal, there's nothing wrong with a beehive - Bazza's living proof of that Link to comment Share on other sites More sharing options...
Mook Posted February 6, 2006 Report Share Posted February 6, 2006 Link to comment Share on other sites More sharing options...
R32Ash Posted February 6, 2006 Report Share Posted February 6, 2006 [ QUOTE ] ATB means Torque Biasing. [/ QUOTE ] Yup. So no messing about with changing worn plates which would happen eventually with a traditional LSD. I haven't driven a car with an ATB diff, but I'd think they're nicer to drive as it 'should' only feel different to a normal diff when it's being pushed a bit. Link to comment Share on other sites More sharing options...
Mook Posted February 7, 2006 Report Share Posted February 7, 2006 You get the best effect when launching from a standstill, as well as when cornering in any conditions - the inside wheel will very rarely spin with a Quaife diff fitted Link to comment Share on other sites More sharing options...
N3WOB Posted February 7, 2006 Report Share Posted February 7, 2006 So the car would be even quicker to 30?!! Music to Wopps' ears Link to comment Share on other sites More sharing options...
Mook Posted February 7, 2006 Report Share Posted February 7, 2006 It's all relative Ross - depends how much slippage you get from a standing start - you may gain 0.1 second... Link to comment Share on other sites More sharing options...
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