[79FT]: Building Things

Annual 2019: March 30

... getting familiar


On: Mar 30, 2019
In: [Chickenhouse Charger] 2019 Annual
Tags: 6781G, MA5 Charger, Annual

Decision

After getting the Charger, I have decided to fix a few basics.

  • Clean plugs
  • Change oil
  • Give her a good look over

Getting a bit ahead of myself, a series of coincidences (airport closed, baffles' condition, intake leak, and others) made me decide to go thru the annu... sorry, Condition inspection (damn, will have to get used to new nomenclature :) ).

Notes

Cowling came off.

Cowling off

Cowling off

Discovered a few booboos:

  • Cracked cowl inlet ramp: need to stop drill.
  • Baffle seal behind the inlet ramp is turned the wrong way (Glenn was complaining about high temps - one of the reasons, hmm?).
  • Top baffle seals are too hard and sag in few spots.
  • One of the air take-offs off the ramp has almost un-riveted itself.

Since I will need some helps with skills and tools with riveting, and we'll need to pull the prop to change (and turn the right way) the seals, decided that I will put her thru annual.

Studying the systems (I was mainly concentrated on fuel and other al lines and hoses to see where things go), discovered a few things, too

  • She has the Rotec TBI-40-MKI TBI installed, which requires a 40 mesh filter upstream of it. The only filter besides finger strainers in tanks is gascolator, which goes down to 72 micron (0.003) only. Need to get a hold of Rotec people and discuss this situation.
  • The "low" end of the tank (in 3-point attitude) has a very nice drain fitting + drain cock draining behind the cowl. I am seriously considering adding a quick drain there - that is the lowest point of the tank in 3-point. My thinking is: water collected in the tank, goes to that lowest point; but there's not enough of it to go thru the take-off (which is in the middle). Then, when I raise the tail, it slushes forward, goes into the take-off, and reaches the engine right when I am just off the runway. Not Good.
  • Some un-critical drain hoses are clear vinyl and hard as a rock. For now will replace them with clear polyurethane, and if that hardens, with rubber.
  • TBI needs positive stops on the throttle quadrant. Need to check if they're present and adjust as necessary.
Crack in inlet ramp: stop drill

Crack in inlet ramp: stop drill

Inlet ramp baffle: turned the wrong way

Inlet ramp baffle: turned the wrong way

Inlet ramp's take-off flange - un-riveted itself

Inlet ramp's take-off flange - un-riveted itself

TBI

TBI

TBI - Regulator Side

TBI - Regulator Side

TBI - Throttle linkage

TBI - Throttle linkage

Electrical fuel pump and gascolator

Electrical fuel pump and gascolator

#1 bottom plug - in pretty good shape

#1 bottom plug - in pretty good shape

Engine compartment right side

Engine compartment right side

Fairings

Spent the rest of the day taking off fairings and access panels. This is the first thing I thing could've been done better here methinks. Everywhere where it was deemed that the back side would be "accessible", Remo used #6-32 nyloc AN nuts on machine screws instead of nutplates. Well, some of those nuts are not accessible, and I gave up on quite a bit of them around the rear wing root fairings.

Need to standardize on fasteners' length so that I don't juggle 10 different screw sizes.

Gotta love that easy access!

Gotta love that easy access!

Flying wires' fairing

Flying wires' fairing

My laborers for the day working on wheelpants

My laborers for the day working on wheelpants


"If you hear me, traffic no longer a factor."
-ORD ATC


Up ↑

Powered by B-Log, which is based on Pelican, heavily plugged and themed.

© Copyright "79FT". All rights reserved. Feel free to cite, but link back to the pages cited.

This website only shows how I did things in my various projects. These pages are for information and personal entertainment only and not to be construed as the only way, or even the perceived correct way of doing things. You are responsible for your own safety and techniques.