Oh man, got bigger cylinders installed, now i get 4,5kg on gas, +6kg on brake and 12kg combined (that's the power needed to press100%..).. The linkage works better, the larger volume makes left foot braking very interesting.. Action is smoother, i could add more pre-pressure since i don't need all the clearance so i get a stiff pedal right from the start, it needs about 500g or more to start the movement.. Strangely, pedal sensitivity had to be adjusted precisely to 50%.
I also raised the whole pedal unit angle to 15 degrees, the force required made the foot slip when lying (almost) flat to the floor. Brake pedal is at 80 degree angle, very nice (they are still floor mounted, too bad..). The overall ergonomic improved a lot, wheel can now be at optimum distance (= closer) and feets are more horizontal.. Previously i had the "Prius" driving position, it felt like my feet were going thru the floor of the car and thru the tarmac. Now it feels like they are inside to car, if i would have to describe, it's close to GT car driving style. Distance from "ass" to the "floor" is now 23cm, that' is in the sport car range, i believe.
I think there is no better Momo in the world... I'm doing the usual maintenance of the wheel before the RDGTC starts, i'll take pictures then for the modding tutorial and some from the very modest cockpit..
EDIT: Forgot this.. There was one benefitial "bug", the cylinders i use now are 5ml disposable cyringes (cheap replacement parts).... They create a vacuum at the end of their travel when combined with grease used for lubing.. I fitted the throttle cylinder so that the piston goes at the bottom at 100% (well 102% if would go so far..) and sticks to it so that i don't need to use much power to keep the pedal pressed fully. It unsticks with ease but it takes at least 1kg off at the end. I also have to press little bit more to get the desired suction happening so it won't stick accidentally.. Sometimes the lady Fortuna is on my side