4drive explanation please! (Formentor vs golf r vs s3)

[St3n]

Hi guys, i have finally ordered my 310 formentor, and just before i am getting it, i wanted to ask about the non-permanent 4drive. I don’t care about an off-road capabilities, just the track and stand acceleration. I saw that S3/golf r and formentor has the same haldex based 4x4 system with dsq381. On the other hand s3 and golf r has permanent 4drive while formentor has “on demand” 4drive.
Can you confirm/deny/explain please?

 

[Zephyr]

All those three cars have the same Haldex system. So all three have the same: Mainly FWD based cars but RWD engages when it detects wheel slip.

If you want a permanent 4 wheel drive, you need to go with an Audi with centre Torsen diff (or a Subi).

 

[Peyton]

New Golf 8 R has a different/newer Haldex to Formentor. Golf is able to send power to either of the rear wheels in addition to the front wheels. This allows for "drift mode" that they have. Formentor has Haldex like in Golf 7 R - it can either send to the rear wheels and front wheels, or just front wheels. It cannot choose which rear wheel it sends power to. As Zephyr said, all have the same non permanent 4WD and that is a good thing. By being able to run FWD most of the time, they do not have power and efficiency losses that 4WD brings to the table, but when traction is limited it can use the rear wheels as well.

I'm no Haldex expert but I viewed a bunch of reviews and someone mentioned this.

 

[St3n]

All those three cars have the same Haldex system. So all three have the same: Mainly FWD based cars but RWD engages when it detects wheel slip.

If you want a permanent 4 wheel drive, you need to go with an Audi with centre Torsen diff (or a Subi).

So You want to say that S3 doesn't have constant 4drive? Are You certain about it?

 

[Zephyr]

So You want to say that S3 doesn't have constant 4drive? Are You certain about it?

Look:

I enclose here the rear group of the three cars Audi S3, Golf 7.5 and Formentor. Check it out for yourself. Doesn't matter if the car sports a 'Quattro', 4Motion or 4Drive. Is the same system with different name.

Unique 'real' Quattro systems are the ones that sport a Torsen center diff. None of those three has.

 

[Zephyr]

If really interested on having a grasp on how they work haldex systems (and no matter how they call it), check it out:

Self Study Program 206 - Four-Wheel Drive with Haldex Coupling - PDF for FREE

VAG SSP 206. Volkswagen and Audi have been building permanent four-wheel drive systems for almost 15 years. In Volkswagen's system, a viscous coupling distributes input torque to the rear axle; in Audi's system this job is performed by a Torsen differential. The slip-recognising system is...

procarmanuals.com

Self Study Program 333 - 4MOTION with Haldex Coupling Model Year 2004 - PDF for FREE

VAG SSP 333. 4MOTION Drive with Haldex Coupling Model year 2004 will initially be used in the Golf 2004 and in the Transporter 2004. Repair and servicing have been made easier compared with the previous version of the Haldex coupling. The new Haldex coupling is fitted onto the rear axle gearbox...

procarmanuals.com

Self Study Program 414 - 4MOTION with Four-wheel Drive Coupling Generation IV - PDF for FREE

VAG SSP 414. Volkswagen has been using Haldex couplings for its 4MOTION four-wheel drive system since 1998. The new generation of four-wheel drive coupling is being used for the first time in the Tiguan. The new four-wheel drive coupling exclusively uses electronic control so that any amount of...

procarmanuals.com

Maybe there are more and more actual but with those three you can start knowing them...

 

[jcbmally]

Hi guys, i have finally ordered my 310 formentor, and just before i am getting it, i wanted to ask about the non-permanent 4drive. I don’t care about an off-road capabilities, just the track and stand acceleration. I saw that S3/golf r and formentor has the same haldex based 4x4 system with dsq381. On the other hand s3 and golf r has permanent 4drive while formentor has “on demand” 4drive.
Can you confirm/deny/explain please?

As @Zephyr states Golf/Audi/Cupra are all the same unless you get a say a Q5 with Torsen set up.

The 4Drive models utilise an electro-hydraulic multi-disc traction system that analyses road conditions in real time delivering power to the wheels with the most traction. Torque can even be controlled across the axle thanks to the EDS electronic aid, which locks the slipping wheel, meaning no transversal torque is lost. The system is integrated into the rear axle and sits at the end of the drive shaft in front of the rear differential, improving weight distribution and reducing inertia and reaction time.

 

[Zephyr]

Found some information about 'real' Quattro systems. Take a look:

Self Study Program 76 - Torsen Center Differential - PDF for FREE

VAG SSP 76. The inspection, adjustment and repair instructions. see the workshop manual 5-speed manual transmission O1A-AWD. The Torsen differential manifold is a construction and will be installed in the new Audi 80 quattro and Audi 90 quattro from model year ‘87. It is intended as a center...

procarmanuals.com

Self Study Program 617 - Audi RS 5 2010 and RS 4 Avant 2013 Power transmission - PDF for FREE

VAG SSP 617. Power transmission is provided by the sporty 7-speed dual clutch gearbox 0B5 S tronic. In the case of the Audi RS 5 ’10 and Audi RS 4 Avant ’13, this gearbox has special characteristics which are explained in this Self Study Programme. Traction on a high level:…

procarmanuals.com

Self Study Program 962103 - Audi quattro - PDF for FREE

VAG SSP 962103. Over 20 years ago, Audi brought all-wheel drive to the sports car market with the Audi quattro. The Audi quattro did not use a transfer case like the other all-wheel or four-wheel drive vehicles of its time. Instead, a central differential was added to the 016 5-speed manual...

procarmanuals.com

 

[deveh]

All this marketing crap. Question about front and rear axles - do they have open diff and use that crappy braking on the spinning wheel, or like (e)LSD on front and open on back?