Quote from I Inventzilla: “why cant other groups reproduce Rossi's results?”
Because they are fake.
Quote from I Inventzilla: “but nobody has run an experiment in self sustain mode for months.”
I do not know of any documented examples of…
Jed wrote: "I do not know of any documented examples of self-sustaining reaction (heat after death) with Ni-H. At least, not without at least heat input."
Take a look at Fig. 2B on Piantelli's Nichenergy webpage which is related to his Ni-H experiments at: http://www.nichenergy.com/results.html
This Figure seems very clear !!! (Black squares show calibration curve of temperature above ambient versus input power, Reddish hexagons show temperature above ambient in active cell as function of input power. Notice that as the input power in the active cell approaches zero the temperature approaches a value (280 C) which corresponds to an input power on the calibration curve of around 60 W, e.g. "heat-after-death".)
Also, notice the following statement on the same webpage under the heading 'Major achievements in over a hundred experiments':
"Fig. A shows the calibration curves (Temperature vs. Power input) and displays subsequent activations
Fig. B shows the step-by-step reduction of the input power following a series of activations until the total elimination of power. The reactor (sealed) has been remaining at a T above 280°C for over 6 months without adding H2 and without interior H accumulations. Finally it was deliberately turned off."
P.S. The same webpage also includes pictures and graphs showing evidence for neutrons, beta+ particles, energetic protons, and alpha particles.