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Old 08-06-2022, 10:21 AM
skelrad skelrad is offline
Join Date: Mar 2005
Location: Redmond, WA
Posts: 384
Default Cockpit - how to protect surfaces

I'm getting ready to start work on the fuselage in the next few weeks. I am super close to running out of my current primer (Stewart EkoPrime - has worked great), so need to order something for the rest of the build. EkoPrime is great, and would be completely fine on anything that's not going to be abused, but on its own I don't think it's a good choice for cockpit surfaces that will be handled a lot.

A few options:
- buy more EkoPrime and use it on everything, but also buy paint to top all cockpit surfaces for durability
- buy a 2 part epoxy primer to finish the build and leave that as the only surface in the cockpit, assuming that would be durable enough (?)

I don't really know which surfaces to worry about. My plan is to have, at a minimum, side panels and front cockpit carpet.
RV-9A: Fuselage in progress
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Old 08-06-2022, 10:52 AM
wirejock's Avatar
wirejock wirejock is offline
Join Date: Oct 2005
Location: Estes Park, CO
Posts: 5,877
Default Primer

Originally Posted by skelrad View Post

A few options:
- buy a 2 part epoxy primer to finish the build and leave that as the only surface in the cockpit, assuming that would be durable enough (?)
That's what I wish I did. Save weight. I used SW P60G2 and Jet Flex. It's tough but nothing like EnduroPrime. I am not installing carpets or side panels so I wanted parts to look good.
Spray a tough epoxy primer as an interior paint. Kirker Enduro Prime. Available in white, gray and black. Spray as is or mix any neutral shade. I sprayed the wheels on my 4x4 to see how it survives. Two years of Colorado road salt and intense sun. They still look just like the day I painted them. It's my go to primer. Also use Kirker Ultra Glo single stage paint.
Larry Larson
Estes Park, CO
E-mail: wirejock at yahoo dot com
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Donated 12/2022, plus a little extra.
RV-7A #73391, N511RV reserved
I cannot be, nor will I be, held responsible if you try to do the same things I do and it does not work and/or causes you loss, injury, or even death in the process.
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Old 08-06-2022, 07:47 PM
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PaulvS PaulvS is offline
Join Date: Aug 2019
Location: Western Australia
Posts: 1,326
Default Another option

Another option; what I did:
- Painted all of the cabin areas with 2-pack polyurethane satin finish. The reason for using polyurethane is that it is tough wearing and resistant to fluids and solvents.
- Primed with a solvent based etch primer.
- The floor panels and skins were painted before riveting them in.
- The internal sides were painted before installing the fwd top skin and panel/sub-panel structure while access was still reasonable.
- I used a temporary paint booth "tent" with an extractor fan and duct.
- I used a face mask with fresh air supply.

The biggest challenge was being able to see the internal surfaces clearly for how much paint to apply, since it was difficult to see reflections.

There will be padded arm rests/elbow panels sides and floor mats but the rest will be left without upholstery.
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Paul vS (yes I'm also a Van)
Building RV-6A #22320 O-320 FP. Wings and tail complete, fuselage almost done, working on canopy.
Flying my Aeroprakt A-22 STOL and the aero club's RV-9A while I build
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Old 08-06-2022, 08:21 PM
David Paule David Paule is offline
Join Date: Dec 2009
Location: Boulder, CO
Posts: 5,573

I used Stewart EkoPoxy for the interior, which has held up pretty well. I'm not flying but the interior parts are in. The seat bottom, back and baggage floor are all white and stacked on a shelf now. They've taken quite a bit of abuse without marring.
RV-3B, working on the cowl now.
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