Originally Posted by quorneng
If I read the tables correctly the EDF-64 itself weighs some 67g then the motor adds another 57. My motor, fan and duct only weighs 57g.
No, they are a lot lighter than that. The motor is about 57g but the fan unit is only around 25g. I don't have a 64mm GWS unit but I do have a 50mm. For the 50mm unit the case and rotor, without motor weighs 12g, with 12mm brushless inrunner motor ready to run it's 30g. The 50mm fan with the brushless conversion will give 200g thrust, but does run hot.