Current status11/6/08 -
working on the KNS-80 -> MC-60 wiring now. Still in the
planning stage, getting the shielded wiring ready, etc. While
looking in vain for a wiring diagram for my Troll Hypervox intercom, a
gentleman named Bill Steer was able to give me a _fantastic_ PDF with
all the details I could ever want. In case anyone else is
googling for this, I've placed a copy here.
working on my costume and other house projects, I've started working on
the new wiring bundle to integrate the 'new' electronics. I've
started with the KMA-24 as the heart, as I suppose the audio panel
sorta is. I've wired in the MK11 connector and have started on
the KNS-80. 10/8/08 -
a loooong delay where I was just flying locally, staying below 10k and
away from Mode C veils, I finally decided to get back to work on the
panel. My first target was getting the KT-79 installed.
Because it's compatible with the altitude encoder already
installed, I used the existing wire bundle for the KT-76 I was
replacing. I moved the connectors to their new positions in the
connector for the KT-79, then fired it up. A neat feature of the
new transponder is that it shows the pressure altitude being reported
by the encoder. I had a brief problem where the encoder wanted to
increment backwards, but this was quickly sorted out with some online
advice as being caused by a B1 line that wasn't engaging. Got it
signed off, and I can fly to interesting places in big airspace again!(Sometime between these two dates)
- I got a spool of Tefzel, card-edge crimp pins, crimpers, and so on.
Learned something useful: While there is a special tool for
removing the pins from their connectors (which I bought and then
immediately lost), a push-pin works too. From the front of the
connector, you slide it under the pin in the tiny groove then pry up
just enough to release the little hook while pulling from behind.
- Went to the local big electronics shop to get new crimp-pins for all
the card-edge connectors I need to wire. ....and nothing.
They not only didn't have any, but they didn't know where to get
any. Online I go, I suppose. I've found these at a few
different places online, I'll buy from a place where I can also get a
second 15 pin card edge connector itself to make up for one that's
missing for my new second COM.1/9/08
- Woo-hoo! Got a KT-79
, now I just need a tray.1/6/08
- This time I was there at the end and had the highest bid
.... but it didn't meet the reserve.
was a nice little Narco AT-165 V/R, a solid state newer transponder
that ended at $567 but below whatever they set the reserve to.1/2/08
These auctions keep spiking right at the last minute, I'm guessing this
is a popular season to be doing avionics work since there's less flying
weather. No worries, there's a transponder out there with my name
on it. Today's wiring goal: Pull out my wiring toolbox and see
what types of pin connectors I'll need for the wiring harness.
Well, the KT-76C shot up at the last minute to about twice my budget.
There's a KT-76A that looks promising, we'll see what happens
sorted through the avionics today. I'll need some new pins for
the plugs for a few of the things, I think that'll be smarter than just
splicing the cut wires to a bundle. I'm talking about the pins
for the plugs in back of the trays, of course. I ain't touchin'
nothin inside them thar fancy electronics.
- Found out that the KT-76A and KT-76C are still cavity tube
transponders, but I'm looking at a C model for sale that would be nice.
Digital display, may not break the bank, we'll see how the
Aw nuts, my transponder is busted. It's a KT-76, cavity tube is
busted. Bloody heck. Time to find a replacement.12/14/07
- I've got most of the avionics in hand. My next step is to
finalize the panel redesign. I need to figure out where
before I can really dive into making the wiring harness. I'll
post a pic of the current panel and diagram my thinking process.
- Tefzel wire
Purchased on eBay.
- Determine which
avionics to buy.
- Plan final panel layout. - In progress
wiring harness with oversight from A&P & avionics
specialist. - In Progress
- Integrate wiring harness and avionics into plane
with oversight and assistance from the same folks above.
- Fly fly fly.
getting that cloudbuster rating.
bought my plane in May 2007 with basic VFR panel.
flying the heck out of it and loving it, but the natural next step is
getting my instrument rating. To do this, I'll need to
panel a bit. While N33139 is technically IFR-capable (see the relevant FAR), in the real world, it wouldn't be a great trainer.
current installed equipment:
six-pack (artificial horizon, altimeter, airspeed, gyrocompass,
vertical speed indicator, rate-of-turn (w/ slip/skid))
- VOR indicator
- Mode C
to the FARs, the plane is one pitot/static cert & VOR
away from being legal for IFR already, but it wouldn't be worth much as
such, because I couldn't:
- Make precision ILS approaches.
- Perform DME
- Monitor more than one frequency.
My original plan was to put the audio panel on top, with the existing
MX-300 NAV/COM under it, then the new MX-11 under it, then the transponder,
then the KNS-80. One nice stack. There are two slight problems with this.
- I have a concern about cooling
- It's too tall by
second concern trumps the first quite handily, of course. I'm
somewhat less than enthusiastic about taking a sawzall to my panel to
make the avionics fit.
The Plan (MK II)
My current thinking is to move the
intercom to the right. I'm thinking about workflow while
and the transponder and intercom are the two things I manipulate least. Plus, having the KNS-80 in the center stack would
it easy to refer to during IFR work. Having both COMs next to
each other is pretty straight forward, and ideally the audio panel
there too just for ease of use because the buttons and labels are so
small and my fingers are so fat.
This is the section that
describes the minimum instrumentation required for IFR flight for those
who don't believe me when I say the plane is technically IFR capable:
- VFR/VFR Night equipment
radio & nav equipment appropriate to the facilities used.
- Slip-skid indicator.
- A clock.
for running/charging the electrical system.
attitude indicator/Artificial horizon.
The actual text, for those needing help getting to sleep, is here
- Audio panelMX-11
- Second comTroll HyperVox
- Existing com
About me me me me
I fly N33139, a Piper Cherokee Warrior.
I'm a PP-ASEL, work in IT, and have a family in Springfield,
OR. I fly out of 77S (Creswell, OR), the friendliest little airport around.