the RV-4 is in add-ons 4 so you can get it if you install the free add-ons : -)Search the swap pages, there is an RV-6 and RV_8 to download, but no RV-4.
Vans RV6A_EA
Van's RV6a Experimental Aircraft N167AM - RBaron's own personal full scale aircraft. It is a 200 mph Sport Aerobatic “Hot Rod”, flown several times a week by seasoned pilot Jim Sisco. Model: NinJato UVMap: NinJato ColorScheme: NinJato...forums.realflight.com
Slipstream 30cc RV8_EA
3D model by jeffpn CS by Maj. Numbskully Physics by jeffpn, fixed by willsonmanforums.realflight.com
The add-ons are not compatible with evolution.the RV-4 is in add-ons 4 so you can get it if you install the free add-ons : -)
https://forums.realflight.com/index.php?resources/johns-rv4_av.9679/ this AV shows you the Add-on 4 has EA https://www.realflight.com/rfl-kb-addons.html i just tried to download from this link and it will not let me so maybe Ryan Douglas or someone else knows more
As @legoman said, those old (very old!) Add-Ons have finally reached the end of the road and will not work in RealFlight Evolution. (Of course, we've added a lot of other, much more modern and higher-quality content in Evo.)https://www.realflight.com/rfl-kb-addons.html i just tried to download from this link and it will not let me so maybe Ryan Douglas or someone else knows more