Complete interior re-furbish

skymstr02 · #1 02-08-09, 05:43 AM

Quote:

Originally Posted by hharney

Another interesting bit of info was that on several structural pieces in the cabin and on the wing panels it is stamped M-337. Lots of parts are marked that way, I think 2JF is part O-2. Cool!

All of the sheet metal parts on the O-2 airplanes are the same part number with a "CP" suffix. The "CP" means that these parts were etched, alodined and primed. The "CP" stands for corrosion proofed according to a friend that used to work at the Cessna Wallace plant. This is also true with airplanes built with the seaplane option (180's and 185's).

hharney · #2 02-08-09, 09:29 AM

That would make sense, because all the parts stamped M-337 are primed. Were all the Skymasters built in the Wallace Plant? Was that the only plant they were assembled?

As you carefully look at this aircraft it leaves a lot to be desired in the streamline, finesse arena. In some places it looks like they had some last minute thoughts on some straps and patches here and there. It's definitely a aircraft that was built for utility and not looks or speed. It's airframe strength was tested with the military use and I like the idea of how strong the whole frame is rather than built for speed and looks like Bo's or Moo's.

SteveG · #3 02-08-09, 04:41 PM

Hi Herb, The project is looking good so far. I'm looking forward to seeing the finished product. Actually I would have liked to have seen more of the work in progress in person but I guess the photos will have to do, keep them coming please. One item I was wondering about but haven't seen you mention is the matter of corrosion proofing. It looks like, with copious amounts of solvent and elbow grease, you have large areas of internal panels gleaming clean. They look great but removing 40 years of oil & grime now leave them exposed. Are you treating them with CorrosionX or similar product before reassembly? Good luck with the remainder of the work. Best wishes, Steve G.

hharney · #4 02-08-09, 10:06 PM

There were very few places of corrosion, most of what you see has not even been wiped off. This aircraft is really clean and in good shape. Those few areas that had some noticable corrosion were cleaned and treated as indicated in earlier posts. I will be treating the aircraft with Boeshield before the paint. http://www.chiefaircraft.com/airsec/...onControl.html Boeshield was developed by Boeing. Goes on with air in a fine mist or fog. Doesn't leave a mess like some of the other products and drys to a waxy film quickly. Come on out, Larry has an extra bedroom and we will put you to work.

Here are some more photos, left wing panel, the M337 stamp in the cabin, left boom sump tank (what a pain to remove), sound control in the cabin, left aux tank.

SteveG · #5 02-09-09, 09:39 AM

Having sprayed CorrosionX into my acft. twice now I know from experience that it is not easy to deliver product throughout the airframe. The thinking behind the question was that treating the wings and booms while the fuel tanks are out would greatly facilitate that portion of the job. Also, cabin soundproofing will preclude treating sidewalls and once your new interior is installed I suspect you might not be thrilled with the prospect of trying to spray above the headliner and elsewhere within the cabin. The good news with the fogging spray is that it goes everywhere. That's also the bad news. I'm not familiar with BoShield but with the other thin film oils their application delays painting for a year or more as the material weeps through lap joints, screw holes, etc. If you haven't yet you might want to speak with your selected paint shop as to timing. I suspect you might now be better off waiting until after painting, even with a wax based product.

WebMaster · #6 02-09-09, 01:18 PM

BoShield goes on as a fog, and displaces water, but when it dries, about 2 days, it leaves a waxy finish over the surface, protecting the surface from further water migration.

It's also messy on the outside, where there is overspray, but it will be stipped so it isn't much of an issue.

hharney · #7 02-12-09, 06:54 PM

Steve you are so right about the timing with the panels open. Why I didn't think of it was unknown. But because you mentioned this, the timing was still good, the left wing was still open and so I did treat it. Although we only had the aux tank out (all panels were off) I was still able to spray the Boeshield with ease around the aux and main tanks. Sometimes you just don't think about these opportunities. I have started to treat the rest of the airframe as we open other panels for an annual inspection while we are doing all this work. I figure even though the annual is not due, I have all these panels open so why not do another inspection. So I'll have a year from the finish date (real soon) for the next annual. The Boeshield is really clean and does not bleed like Corrosion X.

Well just an update on progress, the left wing is back together and buttoned up. All the insulation and soundproofing is in place. The headliner is 90% done and the new BAS seatbelt restraint system is installed. All the widows are finished, only the door and E exit have to be attached to fuselage. I started stripping the door window seal today. What a mess, someone used way too much weather strip adhesive. I call it gorilla snot. When it's dry and old it takes hours to remove. Let's see what's left, motor mounts on the rear engine, spin on oil filter adaptors, strobe lights, main gear tires, front gear hydraulic hoses, oil leak on the front engine,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,a few other exterior chores. We worked hard this week to finish anything in the cabin so that the interior upholstery could be finished this weekend. Should have 90% of the new interior in by Saturday including the Rosen visors. FINALLY!!!

I talked to the paint shop today, looks like they are ready to see the airplane in about a week or so. I still have to make a decision on the paint scheme but I am on my second draft of design and hope to make a choice here real soon. I will continue to post progress as the aircraft goes through the paint shop.

This has been a fun project and thanks to Larry and others on this message board, it has been a real education. I hope this thread helps others when they go through this process in the future.