The economics are you must fly about 80 hours a year to break even over club prices but this is only good if the aircraft is well looked after by the pilots who fly it and this is why I wont rent out my personal aircraft.
To make renting an economic proposition the aircraft has to fly at least 200 hours a year , if you can get the hours up around 300-400 then the cost per hour starts to fall fast and this is what i aim for with the aircraft i rent.