Bill,

On Sun, 6 Aug 2006 15:29:48 -0700, William "Chops" Westfield wrote:

> 
> On Aug 6, 2006, at 3:13 PM, Howard Winter wrote:
> 
> > a hydraulic accumulator consists of a piston in a vertical
> > cylinder on top of a column of hydraulic fluid, with a heavy
> > weight resting on it.
> 
> Are we still talking about transportation?  "Heavy weight" and
> "mobile" don't mix very well...

Sorry, I'd wandered off into fixed installations - someone (Bob Axtell?) was talking about buying land in SouthWest USA and building a 
self-sufficient energy setup - I was going on from that (also following people mentioning underground flywheels).  For mobile use it's 
really hard to come anywhere near chemical storage for energy/weight ratio.

Cheers,


Howard Winter
St.Albans, England


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