Weight & Balance

Ercoupe empty weights can vary a lot and there are also several different gross weight limitations depending on models and STC. Most weigh in empty at between 850 and 950 pounds depending on wing covering, propeller, paint, instruments, upholstery, battery, accessories, etc. Gross weights can be 1260, 1320, 1400, or 1450 for the Forney and M10. So the real useful load can vary a lot.

Look for ways to reduce the zero fuel weight. Changing to a lithium battery can save approximately 20# for example.

I'm a private pilot new to the Ercoupe, helping a friend with an Ercoupe refresh (under the direction of the local EAA chapter and an A&P) and hoping to fly with him or taking my wife for a ride.  Neither of us is heavy, probably 5-11, 170 pounds each (wife is lighter).  I'm confused as to the real useful load for Ercoupes.  It appears from the POH's I've read that the useful load is about 432 pounds, with the STC.  A full fuel load is about 24 gallons (6x24=144 pounds), leaving 288 pounds for radios, ELT, cargo, etc. As I watched on YouTube, how do two grown adults stay within the 280 pounds to stay within max gross weight?  Obviously, carrying less fuel is one way, what else am I missing?