I'm a new gas flyer but have been flying electrics for quite awhile. I have been told that the # of rubber bands to use
has to do with weight of plane. 2 rubber bands per pound. I have a hangar 9 arrow that weighs 5 pounds. It says to
use 10 rubber bands and alternate between cris-cros and front to back. It also says that the oily exhaust from engine can
degrade the rubber. Its best if you keep these rubber bands in talcum powder after flying.

Dave...