How Our All Wheel Drive Works
12-30-2020, 04:50 AM
#26
Newbie
Join Date: Dec 2020
Posts: 1
Likes: 0
Received 0 Likes
on
0 Posts
AMG C63S
The lateral torque split on C43
I'm considering buying a C43 and I'm interested in the car because of the AWD system. Information on MB websites is just light marketing material. In particular I'd like to know how the lateral (right to left, or left to right) transfer of torque is done in the car. Is it via LSDs (front or rear or both ?) Or is it done using the ETS, that is, by braking the slipping wheel?
Also, how is the front to rear torque split permanently set at a single value ? Is the centre differential mechanically adjusted to provide a constant split ?
Any advise would be very welcome. Thanks.
Also, how is the front to rear torque split permanently set at a single value ? Is the centre differential mechanically adjusted to provide a constant split ?
Any advise would be very welcome. Thanks.
12-30-2020, 07:51 PM
#27
Senior Member
Join Date: Oct 2017
Location: UK
Posts: 419
Received 131 Likes
on
83 Posts
2004 E55 K Wagon &. '96 SL500
I'm considering buying a C43 and I'm interested in the car because of the AWD system. Information on MB websites is just light marketing material. In particular I'd like to know how the lateral (right to left, or left to right) transfer of torque is done in the car. Is it via LSDs (front or rear or both ?) Or is it done using the ETS, that is, by braking the slipping wheel?
Also, how is the front to rear torque split permanently set at a single value ? Is the centre differential mechanically adjusted to provide a constant split ?
Any advise would be very welcome. Thanks.
Also, how is the front to rear torque split permanently set at a single value ? Is the centre differential mechanically adjusted to provide a constant split ?
Any advise would be very welcome. Thanks.
The car has a multi - clutch transfer case which has a fixed torque split of 69 rear 31 front. The F & R diffs are open, no LSD, there is no lateral torque vectoring like the A45 rear axle, just 2 open diffs, with selective wheel braking if ESP is on or in ESP Sport.
01-05-2021, 10:58 AM
#28
Hey guys, really useful info on this topic. Still I don't completely understand something for the C43 / E43 permanent awd with fixed split front - rear: check out this video below, first test when the rear wheels are on rollers and the fronts have traction (ignore the BMW, let's just discuss the 4matic system); , why does it take so long to move forward? The fronts have traction so why does it struggle so much?
BTW I got stuck in a parking log a few weeks ago kind of the same way, rears didn't have a lot of traction and I had to be pushed out of the parking space. Would have tried harder but there were cars parked pretty close and I was afraid I'd slip into them.
BTW I got stuck in a parking log a few weeks ago kind of the same way, rears didn't have a lot of traction and I had to be pushed out of the parking space. Would have tried harder but there were cars parked pretty close and I was afraid I'd slip into them.
