From: "Alex Madsen" <madsena@rose-hulman.edu>
To: "'Rotary motors in aircraft'" <flyrotary@lancaironline.net>
Subject: RE: [FlyRotary] Re: It's Ed's fault :-)
Date: Mon, 15 Mar 2004 00:20:20 -0500
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McMaster-Carr has a selection of petcocks.

Alex

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of David Carter
Sent: Monday, March 15, 2004 12:11 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: It's Ed's fault :-)

Jim Mosur has a petcock on his installation - saw it at Shady Bend last
Oct.

I spent some time with Google yesterday trying to find a petcock to
retrofit
into my car, and with an eye to needing one for my rotary engine cooling
system later.  Here's a sample of one web source for $3.25

http://www.rockauto.com/dbphp/mak,PLYMOUTH,1995,GRAND+VOYAGER+LE,1237328
,3.8L+230cid+V6+MFI+(L),COOLING+SYSTEM,2176,RADIATOR+DRAIN+PETCOCK
$3.52  No picture on this site.

It was late Saturday and I didn't even try the auto parts stores, but
they
should have some in their catalogs.

I asked an auto mechanic friend last night if he ever put petcocks on
radiators - sometimes - didn't have a source in mind, but they are
available.  From some vendors he can special order the petcocks be put
on
instead of the plastic plugs that seem to be so common now.

When you find one that might generally be found in an auto parts store ,
how
about giving us a note on this list?

David

----- Original Message ----- 
From: "Russell Duffy" <13brv3@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Sunday, March 14, 2004 10:01 PM
Subject: [FlyRotary] It's Ed's fault :-)


> Greetings,
>
> "Yee of little faith" here decided to believe Ed, and not install
bleed
> fittings in the top of my evap cores.  Today's log follows.  I imagine
the
> mechanical pump would have done the job in several iterations of
running,
> but I don't want to have to go through that every time I drain and
fill
the
> system.  Fortunately, I left the cores clecoed to the mounting
brackets
for
> just such a reason.  I'll be welding 1/8" pieces to the top of one
tank on
> each core, and threading it for 1/8 NPT.  If I can find a nice petcock
> locally, I'll use that, otherwise, just a plug for now.
>
> 3-14-04
>
>
>
> Did a lot of fiddly things to get ready to fill and start the engine.
> Unfortunately, when trying to fill the water, I couldn't. The EWP
wouldn't
> pump, because  it wasn't primed.  It can't get primed, because there's
no
> water in the evap cores.  There's no water in the evap cores, because
I
> listened to Ed and didn't install fittings in the top to bleed out the
air
> :-)  Installation of the bleed fittings is under way.  There was also
a
> pinhole leak in one of the EWP flanges.  I need to fire my welder.  It
has
> now been "JB welded" within an inch of it's life.  If it leaks now,
I'll
> just have to throw it away.
>
>
> Cheers,
> Rusty (Ed, you owe me a beer <g>)
>


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