Bill Schertz
KIS Cruiser # 4045
----- Original Message -----
From: "Mark Steitle" <msteitle@mail.utexas.edu>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Tuesday, March 16, 2004 6:02 PM
Subject: [FlyRotary] EGT/CHT wiring


> I've been wrestling the wild EMU and need some help!  (actually, it has
> been pretty easy, and fun, in a wierd sort of way).
>
> I purchased the EGT probes with the weld-on bungs from ACS.  The problem
is
> the leads are only about a foot long and they have ring terminals on the
> ends.  Do I cut these and solder (or weld) extensions so they will reach
> the EMU box?  Would a standard terminal block work?  Any other solutions?
>
> For the CHT probes, I have drilled a 1/8" hole in the web next to each
> leading spark plug.  The bottom of the hole stops at the steel liner of
the
> center housing.  I have ordered "J" type thermocouple wire and will tig
> weld the connections.  My question is... do I need to insulate the
junction
> to prevent it from making contact with the metal housing, or does that
> matter?

Depends on sensing circuit, probably doesn't matter.

I would suggest not potting them. You could put a small amount of silicone
fluid for heat transfer in the hole, but probably not necessary.

Should I pot these into the holes, or just stick them down into
> the holes and leave it go at that?
>
> Mark S.
> (my turn to wrestle the wild EMU)
>
>
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