Stew, my T/W weight was around 47 lbs. when I first weighed it and my "personal" limit for passenger is 200 lbs. The figures posted are somewhat irrelevant because its possible to have variance in T/W weight based on nose weight as you can surmise. My personal experience with RV-4's, mine included ,is that if the plane is within build/W&B recommendations from Vans, your back seaters weight capability may exceed what your comfortable handling in various conditions. If I have a "hefty" person that wants an RV grin, I make sure I'm at full fuel (CG moves FWD), smoke tank (in cargo area) is empty and I set my trim for take-off to my hefty PAX position. I can carry more than a 200 lb. person because I have before, but the pitch just gets too sensitive, and any emergency maneuver like bird avoidance or go-around requires forward thinking before doing, or the G-meter gets excited or the nose rockets up on go-around. Also, if you are traveling, and fly to minimum fuel (CG AFT) things can really get your attention. Plenty of folks on here have had the 220-275 lb. PAX, but that is no fun! Again, these are personal limits for me, and i dont make many exceptions.
8A7 / Advance NC