I been doing some tests with our CNC 127mm Dynamax fan, the Scorpion motor is pretty impressive for its size. 15lb thrust at 4600 watts and the sound of 11 blade rotors is as close to turbine as u gonna get at present. AUW with brackets ready to mount is 890 grams. I recall reading about the scorpion bearing thing on rcgroupsand Mr Scorpion saying he didnt think it was an issue in fan installations.