wvlenthe wrote:

This is actually quite a simple one... pressure in the air suspension system will tell it... difference front & back will give weight distribution front & back axle.

ent wrote:

Just to throw my two pence worth in to the mix surely the ABS ECU will account for any increase or decrease in braking power and adjust accordingly i.e when discs and pads are new you dont lock up any easier than you did just before you changed them?

That's right and why I suspect the brake size parameter will have a small effect on the efficiency of the traction control algorithms. What I was trying to say in my post was that many vehicle systems have a closed loop target value and by definition this will itself compensate for any extra external factors by increasing or decreasing whatever actuation it has control over. Take the suspension height control as a simple example. It doesn't need to know how heavy the vehicle is - it just needs to know that the set point (target height) is 'x' units from the actual height and it knows it can actuate the compressor to get to the set point and not much else. Same with a braking system - ultimately the system can actuate the pistons and it will do this by modulating brake line pressure on individual wheels in whatever clever ways it can up to its physical maximum limit. At the end of the day, whether you have new pads/discs or old ones, it will still use the vehicle dynamics input to predict breaking of traction and be pretty good at it within the system constraints i.e. you may take a bit longer to stop, but you won't skid (just like the compressor will take longer to get a heavy vehicle up to the height set point, but it will get there).

I'll have look for some recent white papers on traction control and post the links if I find them.

I forgot to say that I used Bodsy's brake bible when changing my discs and pads. Cheers mate - made it very simple, especially the EPB

Bodsy wrote:

Have to say, this is one of the most interesting threads in a while. Great contributions all

Yes thanks for the reply from BBS and Brewmonkey ...overall I agree that if you can change the CCF.. then why not I guess somewhere in Gaydon there's a cabinet with a file in it labled something like "system architecture diagram" that would answer our queries ....but it's good to throw thoughts about

al cope wrote:

So, if I'm running RRS Brembo's on the front and V8 on the rear................................. whats the CCF setting again??

Al

BrewMonkey wrote:

wvlenthe wrote:

This is actually quite a simple one... pressure in the air suspension system will tell it... difference front & back will give weight distribution front & back axle.

A fair assumption, but I have a nagging suspicion that it doesn't work this way. I could be completely wrong though.

al cope wrote:

It isnt right now (just winding Bodsy up), but an ex forum member (who is now down under) was on his D3 S. Was a really nice setup, work carried out by JE in cov, but easy enough to do yourself. Just make sure you get the correct Brembo front calipers (as ther are some that look the same but dont have the harmonic dampers), and of course, a minimum 19" rims to clear them.

Al

When I bought my D3 in 2006, the cost of the RRS Brembo brakes was really cheap. I so nearly bought them from TLO, but at the time I had always changed my vehicle every 2-3 years so didn't bother. If only my crystal ball hadn't broken

Now, LR have massively hiked the cost of the Brembo's and also I'm really enjoying driving on 18" rims.