Dura Ace 7900 levers on Camag calipers

They said it couldn't be done cos of different "pull rates". The braking on my 7900 levers with 2004 pre skeletal centaur calipers is powerful and progressive.
The 2008 Record Ergo levers on my chorus pre skeletal calipers is very good on the front but rubbish on the rear. The braking is non-descript and then locks up depsite after market pads and decent rim quality.Duuhhhhh...wonder what DA calipers are like???
SO much for the so-called "pull rate" issue.

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Scott Addict 2008 R4
HED JET 50mm 2007
Record/Chorus/Centaur/Ultegra mix
50/34 12-25
7,54kg

Cannondale Six13 Pro
Mavic Cosmic SL 2009
Dura Ace 7900/7800
12-25 52/39
7.70kgs

What was said and what shimano says is 7900 levers with 7800 calipers and vice versa. shimano didn't realy address 7900 levers and Campagnolo calipers(imagine!!)With things like Campagnolo ERGO 10s and sram deraileurs working, not surprised 7900 and Campagnolo calipers working well.

Setup on brakes means a lot. Most say(without any knowledge whatsoever)that Deltas work like crap. My Deltas work great, Stop well, are progressive, strong. Like front derailleur setup, depends a lot on the wrench.

My chorus calipers are from the first generation 10spd range in 2000. Great calipers to look at but the back just locks up at the wrong moment. Have tried differrent rims, pads, weather cndts,roads but to no avail. Even chanegd cables, clean calipers etc. The front caliper has always worked well.

__________________
Scott Addict 2008 R4
HED JET 50mm 2007
Record/Chorus/Centaur/Ultegra mix
50/34 12-25
7,54kg

Cannondale Six13 Pro
Mavic Cosmic SL 2009
Dura Ace 7900/7800
12-25 52/39
7.70kgs

The back tire tends to lock up for everyone due to weight transfer in heavy or panic braking regardless of the brands of levers/calipers/pads used. Being from Spain, you likely have seen moto road racing where the pro's will have the back tire bouncing off the track on limit braking before the turns. At that max braking point, basically the entire weight of the rider and bike is on the front wheel.

Different pads and rims may give more progressive control, but the rear wheel will still lock if you grab a big double handful of brakes. Sliding backwards off the seat to reduce weight transfer under heavy braking will delay or prevent the lockup and give the fastest stop. Trying to "finesse" the rear brake to keep the rear from locking in a panic situation is difficult....as I'm sure you've learned already