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-   -   Fuselage clarification (https://vansairforce.net/community/showthread.php?t=129588)

HeliCooper 09-13-2015 08:01 AM

Fuselage clarification
 
Really stupid question.

Page 29-03 step one says "Mask off the forward and aft mating surfaces of the U-01402 Lower Gear Braces and prime"

Do they want you to prime the mating surfaces or the the entire thing except the mating surfaces? Why do they not want you to prime the entire gear brace?

Ron B. 09-13-2015 08:54 AM

I painted all but the mating surface. I assume they want steel on steel for a tight clamping force. The surface on the gear leg is also without powdercoat at that contacting area.

rvbuilder2002 09-13-2015 04:18 PM

Mask usually means to cover so that it doesn't get primed/painted. The mating surfaces are the ones that come in contact with each other.
Translation.... Cover the surfaces that contact each other and then prime/paint the remainder.

HeliCooper 09-14-2015 07:22 AM

Thank you guys

N941WR 09-14-2015 08:09 AM

Quote:

Originally Posted by Ron B. (Post 1013696)
I painted all but the mating surface. I assume they want steel on steel for a tight clamping force. The surface on the gear leg is also without powdercoat at that contacting area.

I'm not building a -14 so I'm confused by this post. I just want to make sure you are not having unpainted steel surfaces touching aluminum. If you are, then you are going to have corrosion issues sooner than you would like.

Ron B. 09-14-2015 09:09 AM

Quote:

Originally Posted by N941WR (Post 1013878)
I'm not building a -14 so I'm confused by this post. I just want to make sure you are not having unpainted steel surfaces touching aluminum. If you are, then you are going to have corrosion issues sooner than you would like.

Steel on steel, bracket is steel and so is gear.

HeliCooper 09-14-2015 09:34 PM

Now I am confused because the fore and aft surfaces of the 1402 butt against aluminum. It mates with the spar carrythrough and the gear brace brackets.

Ron B. 09-15-2015 04:36 AM

Quote:

Originally Posted by HeliCooper (Post 1014020)
Now I am confused because the fore and aft surfaces of the 1402 butt against aluminum. It mates with the spar carrythrough and the gear brace brackets.

You paint that area.

HeliCooper 09-15-2015 07:33 AM

I think I finally have my head wrapped around this. It is the fore and aft surfaces on the inside of the cutout of the 1402.

Ron B. 09-15-2015 09:14 AM

Yes, that is correct.


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