i had an idea about fuel tank foam and the filler tube locations..if there are different opening sizes of the foam.. i would think that having the center of the bottom of the foam with a increased open pattern and a tighter pattern around the edges of the bottom and across the top if racers extended the filler tube into the middle of the course foam the fuel would flow in faster and spread out.. allow the fuel cell to fill from the bottom up.. allowing trapped air to escape into the fuel can as designed..since the fuel tanks have pumps along the outer sides now.. so the fuel can be picked up during cornering or while slower on the high banking. lastly is there any rule against installing the tank at an angle... front end high.. and installing the pumps in the lowest rear corners.. so you get every drop??? might mean relocating the entry point of the tank closer to the high corner.. so you get the same amount of fuel in and don't have a trapped air pocket.. but how much trapped air is in the tank when the left side of the car is jacked up during left side tire changes.edit... i dropped in this line drawing of the multi density fuel cell foam idea.. the vapor remaining an an almost empty fuel cell while filling will pass through the conventional fuel cell foam faster as the fuel needs larger openings in the foam in the middle block to spread out. .
I remember you talking about this a while back. How have you been Wayne? I am glad you posted this too!