What year is it?
Wood or metal prop?
Wood props turn 50-100 rpm faster.
I figure 4 gph, but I agree, don't fly more than two hours without
stopping. (Depending upon the seat cushion material, that may be all you
want to do anyway. Unless you confor foam, that seat is going to get
mighty hard, fast.)
The Cub's fat wing climbs like a homesick angel.
Expect 65-70 mph cruise at 2100 rpm (Does that sound right, Dan?)
Use 60 mph in the pattern, 55 mph down final slowing to 45-50 mph at
roundout.
Depending on your girth, you can either use the toe of your right foot
to pull the carb heat or pull to a slight climb before standing up and
reaching forward while descending as you pull the carb heat by hand.
The door on the Cub is nice because you can hold onto the open lower
portion with your left hand so you don't slip while you stand behind the
prop to flip it to start the engine. You then have the throttle and fuel
close at hand.
I start the engine with the fuel turned off. If the airplane gets away
from you, it will only run for 30 seconds or so until the sump empties.
This gives you time to climb in and move the switch to ON.
The glide ratio is 10 to 1.
Max gross weight is 1220 pounds.
Remember to clear the carburetor every minute or so when/while in a descent.

MLenoch wrote:
I may need to ferry a J-3 this week. I need some specs: What's the fuel
capacity, fuel burn rate and cruise settings?
Thx
VL