|
William,
I would suggest keeping any lines with pulses on
them (such as fuel injectors) separate from other electrical
lines. The 12Volt swing is not the concern, but we have found that
collapsing injector magnetic fields can generate much higher voltage peaks
(thanks Steve B) which could induce noise in other lines. Some lines such
as your EGT will have very low voltage/current signal that could get affected by
such noise spikes.
Not sure you have to pass your ground through
the firewall. My engine ground is grounded to the firewall with a
bolt/washer and on the cockpit side I have tabs off the same bolt for
grounds.
I think you have the basics covered - the devil is
in the details
If you plan on using a thermostat then H20 would
probably be my choice. Without it, the coolant temps is too low in the
winter to provide much heating effect (don't ask me how I know {:>).
Without thermostat, I would opt for muff (especially in cold weather
country).
Good Luck
I fly an Ec2 in an Rv-6A
Ed
Sent: Saturday, April 21, 2012 11:33 PM
Subject: [FlyRotary] Firewall Penetrations
I just got my mount and gear legs back from the powder-coater and
before I mount them to the fuse for good, I'd like to work out the firewall
penetrations. I think at this point I'll be using a single throttle body,
short intake runners into a log manifold and a single turbocharger.
I
already have an ec-2 (thinking about popping for an ec-3) I'm running a
Tech Welding bed-style mount.
Penetrations that I still need
that I can think of:
Throttle
Engine harness (I think that EGT
will be okay to go with the rest of the wires but I'm not sure, I've got some
reading to do)
Fuel feed
Fuel return
Power
Ground
MAP
Heat
(not sure if I'll go with H20 or Muff)
Who has an rv-7 or rv-9 and
has worked out the proper locations for these penetrations?
Am I
missing some?
Do you have a similar airframe? I'll take your
experience too.
|