SIMULATOR!!! Batterys... I have slung a 11.1V 1800Mah from between myy Skids on my heli-max AXE-CP Just to get lots of power and it works. If your just starting out I dont sudgest doing this because it changes alot especially if the battery slips out of the zipties like mine did a couple times.( funny story when you loss all electrical power 15 feet up ) Just the way it goes. Dont get mad when you crash, Go ahead and tell the wife/girlfriend crashing is apart of learning and learning ='s money. I would go ahead and invest in tail booms and every part nessesary to rebuild the rotor head and tail. BUY SKIDS something forgotten means less time "learning". Good luck and remember not to give up. Oh dont try hovering around in small rooms or living rooms air circulating causes a circular air flow in the room and eventually can get nasty. GOOD LUCK!