i don`t have a scale.i have a super decathlon that is over 15 lbs. & i think the cub is a pound or 2 lighter.to get it to balance i cut a hatch in the tail & put a 2200 mah batt. back there. it still took 8 0z of lead to get it to balance. i know 2200 mah is way too big but i know someone who sells them to me for $15.i only put them in bigger planes. i like 6 volt for more torque. i usually overpower them so a little weight is needed anyway. what plane r u going to put the engine in? i have a q 50 that is set up for alcohol but it would drink too much of the $14 gal. stuff.i have the coil for it so i think i`ll get a new carb & fly it w/ gas. i was thinking about a patty wagstaff extra?
conk