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["WILLIAM JONES" <billj AT harborside.com>]

One potential problem for my present version of the Wirtz alternator is that 
the chambers refill passively, which I know from experience can take more 
than a second or two.  If you really throttle down, it could be that the 
refilling can't keep up with the ejection.  Here's a simple way to avoid that 
problem.  Just use a little more pressure than it take to run the engine, say 
5 psi more, so that the pressure in the final loop of hose is high enough to 
inject water, uphill even, into the displacement chambers.  If we just add a 
5 psi regulator at the top of the gravity separator, then the water will 
always be pressurized enough to fill the chambers quickly.  If we don't have 
this "active reflll" feature, then it becomes a problem to place the 
separator below the pedal/hose assembly, and also the alternator below the 
separator.
We also don't need to push foam in.  The air can just push the water out from 
the top and continue flowing.
We can also make do without the complicated balance for weighing the 
chambers, just by using the bike pedals as cams to change the state of the 
valves.
Tomorrow I'll submit a diagram for my new design.