Noen som veit om lignende denne til 40mm motor?
http://www.hobbyking.com/hobbyking/store/__19443__Alloy_Motor_Heastsink_for_36_Size_Motor.h tml
http://www.hobbyking.com/hobbyking/store/__19443__Alloy_Motor_Heastsink_for_36_Size_Motor.h tml