120 mm EDF
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3D model description
This is the fan that powers my EL-39 and He-162. The He-162 impeller is higher pitch and gives more thrust and higher current draw.
They are designed for Het 800-73-590kv motors and 12S batteries. Current draw is ~95 A for the EL-39 fan and ~110 A for the He-162 fan.
Take extreme care when running any EDF, sespecially a homemade one. An exploding fan can cause severe physical injury. This is only for advanced modelers who understand the hazards.
-Motor is a HET 800-73-590kv with a jetfan heatsink:
The impeller is mounted to the shaft with two long grub screws. However, one of the screws MUST sit in a 3 mm hole drilled perpendicular to the motos shaft, about halfway through the shaft. This is to ensure the impeller can not leave the motor in any situation as the hub is still only plastic.
-This is a very highly loaded assembly at high speed so it's important that you know what you are doing.
-Make sure the integrity of the printed impeller is good before trying to run it.
-Always wear protective glasses when test runnin the fan. Always protect your eyes.
-Do NOT run the fan at high power while holding in your hand.
-Keep your hands and any loose items away from the fan when running. It WILL shred your fingers if they get sucked in, and the suction force is very strong. If something gets sucked in it can damage the impeller and potentially shatter, throwing loose debris out.
3D printing settings
Impellers: 6-8 top and bottom layers, and 5-7 perimeters with zero infill
Housing: 6-8 top and bottom layers, 2-3 perimeters and 100% infill
- 3D file format: STL
- Last update: 2020/03/27 at 14:05
- Publication date: 2019/07/22 at 16:52
Norwegian inventor/designer/cat owner.
Please don't ask for original design files or parametric files.
If you ask a question about a design, ask under the design so that I can answer there.
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