There are 7 Rans RANS S-18 aircraft on the U.S. registry that TailWiki has a page for. Every one is built from the public FAA record — year, serial, engine, home base, and registration history — and owners and pilots add photos, trips, and stories on top. The ones listed here were built between 2004 and 2014.
N18SU
2014 Benjamin R Austerman RANS S-18
Sahuarita, AZ
N582PS
2013 Spanaus Patrick J RANS S-18
Mc Alpin, FL
N999NM
2008 Marker Michael M Jr RANS S-18
Los Lunas, NM
N352JH
2005 Havens James L RANS S-18
Thurmont, MD
N75KT
2004 Willis Thomas C TC WILLIS LLC S-18II
Huntsville, AL
N188TC
Wells Glen RANS S18
Repton, AL
N299RJ
Robert J Thomas RANS S-18
Church Point, LA