How to Fix RC Helicopter Lift or Take Off 4CH 3CH علی منتشر شده در تاریخ 1397/03/01 If your Radio Controlled Helicopter is not taking off or lifting there are 4 possible solutions ... If your Radio Controlled Helicopter is not taking off or lifting there are 4 possible solutions همه توضیحات ... #تحصیلات_و_یادگیری #how_to #helicopter_invention #rc_toy