Hmm. I don't know enough about the PS system to poke any holes in the
"cavitation" theory; and those arguments sound reasonable to me.  Would
love to see a hydraulic schematic or have some experience with ANY PS
system.  Sigh.

Here is another postulate:
the restrictor serves to limit the maximum speed that the PS pump can move
the wheels.  (IE. It prevents the wheel direction from changing direction
too fast).  Could be for stability and safety?  Could be to reduce wear and
tear?

Meh.

On Wed, Jul 11, 2012 at 5:10 PM, David Beierl <dbeierl@attglobal.net> wrote:

> At 04:55 PM 7/11/2012, John Meeks wrote:
>
>> My experience running Frank Condelli's hose set to replace the pipes
>> for the past 3 or so years confirms this. Frank has said his setup
>> has no restrictor  valve. No noise from my pump.
>>
>
> The restrictor in question isn't in the long run, it's in the short
> hose that starts directly at the pump; so if you haven't replaced
> that you still have the restrictor.
>
> Yrs,
> d
>