I am looking for a motor with the following characteristics: • Cheap • Easy to control • Can provide 150-200 grams’ thrust • Weighs less than 50 grams • Low voltage: (preferably under 12 V ideally 5 V) I am using the following equation to calculate thrust T=100*(nb 2 Pi Rho (P^(2)) (R^(2)))^(1/3) [gf] nb=0.75 P=VI=torque*rotational velocity [w] R=0.066[m] rho=1.22[kg/m3] Is this calculation viable? Does such motor exist? Do I use coreless brushed motor, or brushless motor? Voltage specification: I set the voltage low because I thought that a higher voltage would demand a heavier battery, such to lower the overall weight I thought to limit the voltage on the motor, is this a stupid assumption? Thank you