Turbo cooling fan from spare quadcopter parts

thingiverse

Summer TURBO cooling fan. It uses 5" propeller, it can be 5030, 5035, two or three blades, whatever fits your motor and voltage. In my case the motor is cheap DYS-BE1806 suitable for such propellers and 2S-3S voltage. Mounting holes should take any similar motor, they are the same as in 250 quadcopter frame. 7mm hole in the handle is for chinese servo tester potentiometer knob. You should be able to fit there all: XT60 connector, ESC, and tester stacked on top of each other. Handle has 25mm x 35mm, it should fit standard LiPo 3S small quadcopter battery, I use 1300 and 2200 mAh 3S turnigy, the difference is in length, so the smaller battery fits nicely but bigger sticks out a bit. Handle has 14.5mm of length, it had to be trimmed down to fit on the 220x220 printer bed. And it barely fits, you have to center your bed precisely to be able to print this, or scale it down a bit but remember that the inner diameter has 130mm space to fit the propeller, and the gemfan 5030 propeller has 127mm so there's not much space. HINT: in your slicer set the plate adhesion to none, so you have the whole bed space available. There is one 35mm bridge in the "bottom" part, if your printer can't handle that, add supports. The whole thing consist of 3 parts. Handle top in two versions, with switch and without. Add 2 thin screws. Print with 100% infill, all walls are only 1.5mm thick, so no empty spaces. The whole thing will be rigid after assembly. Tinkercad: https://www.tinkercad.com/things/91HYls7lNBf-turbo-fan