Many things do not add up here, especially the drastic changes from the original E-Cat.
I don't have any problem with the design evolution.
The original "warm" cat went from a large tube boiler to a small tube boiler to a kettle.
The hotcat went from a large ceramic+steel tube (with a cavity in the middle), to a closed ceramic+steel tube (both with the heating resistors lengthways) and now to a smaller ceramic tube with helical resistors. But the heating resistors were always on the outside.
