> > Jerry Hey wrote:

 > >
 > > Paul,  I have down sized the insert so that the outer housing rim is
 > > not milled.  Everything seems to be fitting nicely at this point.  A
 > > smaller hole for the pressure tap may be possible.  What do you
 > > recommend Tracy?  I am going to put this away for awhile.  I am sure
 > > everybody is getting tired of it.    Jerry
 > > --
 > > Jerry Hey

 .25 is way overkill Jerry.  This is an application where smaller is better.
 It helps smooth out the pulsations in MP.  1/16" would be plenty.  There is
 no significant flow in this path.

 Tracy Crook

Thanks Tracy,  I suspected that but I did not know.  I will go with
.063 inch.   Jerry

Jerry could you send me an ACAD file for your PPort?  I'd like to plot full scale and mess around
with some machining.

Tom Webber  my email is Twebber@cityofsacramento.org   thanks T.W.

 
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