Thermocouples connected to Dynon EGT CHT


Subject:    Thermocouples connected to Dynon EGT CHT
From:    Sam Hoskins (sam.hoskins@gmail.com)
Date:    Fri Nov 21 - 5:08 AM
Please help me work through this.

1.  I am reusing my old Westach EGT/CHT thermocouples, type J & K.  They
appear to be shielded and have 48" leads and will need new terminals.
2.  I have a pre-fab TC harness from Stein Air (for Dynon), which is made
from a non-copper wire.  It seems to be pretty stiff.  The EGT lead wires,
under the sheath, are rust/yellow.  The CHT wires are rust/white.  This
harness wire is way too long and needs to be shortened.

My questions are:

A.  Due to the crazy airframe, it is not uncommon to pull the engine at
annual inspection time.  What would be the best connector to use?  Could I
use a D-sub? The connection to the D180 is a 25 pin D-sub.
B.  For temperature accuracy purposes, would it be better to position the
connector forward or aft of the firewall?  The most convienient would be
forward.

Thanks, in advance.

Sam
www.samhoskins.blogspot.com




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