Cabin Heat Cable

While I'm waiting for delivery of my #10 drill bit for my pneumatic angle drill, I'm getting my cable ready for the heat cable installation. Since the cable housing goes through the #10 hole in the firewall stiffener, I'm not sure how hard it will be to put install the cable end for the control arm of the heater selector bypass, since it doesn't allow much movement. I am thinking of putting the first 90 degree bend in first, putting that bend into the hole of the control arm, and then doing the second 90 bend in to complete the installation. Any thoughts?

I put the bends in, attached it, THEN tightened the Adel clamp to its final position. Wasn't a big deal.

Another option:
http://www.aircraftspruce.com/catalog/appages/cablendbnut.php

I used the B-nut (Van's has them) and a small piece of angle to keep the control cable in line. Ignore the connecting hardware in this picture, it was replaced with the B-nut. The B-nut allows rotation on the heater control arm to keep the control cable from curving and binding.



This modification does require a deeper slot cut into the cabin heat box center tunnel cover.
Having the control cable sit aft of the firewall longeron gives room for the wiring bundle to sit forward of the cable.
Another thing to consider is using a platenut where the adel clamp is connected to the firewall.

Thanks Guys! Just as an FYI, I bought the 1/4-28 #10 drill bit for my pneumatic angle drill from Aircraft Spruce. I didn't see it on Avery's website.

http://www.aircraftspruce.com/catalog/topages/malethrdbit.php

Bootscooter said:

Hey Walt,

You wouldn't happen to now which part number at that link wold be the most suitable for a standard (as per the plans) installation.

Brgs Chad

Click to expand...

I believe this is the one:
070 .645 .186 .093 05-16245

LettersFromFlyoverCountry said:

I put the bends in, attached it, THEN tightened the Adel clamp to its final position. Wasn't a big deal.

Click to expand...

I see nothing difficult or wrong with Vans install. Seemed to me a simple task.

Vans plans for the install are fine. I did change the location of the heater knob as an fyi. I moved the location of the knob to the left side of the panel and ran the cable across the upper part of the ribs and through them and then followed Vans layout. There is enough cable to do this. It works fine and it's just a personal preference but food for thought.