John Bundy wrote:

What size air compressor do I need for building my RV-10? I don't know
about rivets and air tools. My experience is mostly carpentry. I may
be interested in spraying some primer in interior areas but that's
about as far as I'd go with painting.

Go to:

http://www.matronics.com/search

& get as many opinions as you can stand about air compressors directly
from RV builders.

If all you do is rivet & don't try to use spray guns or air powered die
grinders (air drills are ok), a little 5 hp unit with 10-15 gal tank
would be adequate. Type of compressor gets important if you don't care
for noise (oilless is bad; old style piston type with oil in the
crankcase is good).

Charlie