2 Port UTV Helmet Air Pumper
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2 port helmet filtered fresh air pumper system using an 80mm server fan
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- Printables
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- Automotive
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- Creative Commons — Attribution — Noncommercial
After my expensive, centrifugal-fan helmet pumper burned out, I decided I'd attempt to clone one of the newer axial fan designs. This uses a high static pressure 80mm server fan - don't try to use a “standard” PC fan; it will not make enough pressure. You will need to print:
1 Main body
1 Lid
2 Hose Adapters
0-2 Hose port caps (blocks off unused ports)
It is designed to need no printed supports and rely on assembly rather than attempting to print the body and hose adapters as one piece. The port caps should be TPU or other flexible materials while the other parts can be just about anything.
The body and lid assemble with standard M3 bolts and nuts. The hose adapters are pressed into the main body and secured with glue. Optionally, hot glue or RTV silicone can be used to further seal the body to the lid. The mounting ear allows bolting to a variety of cage clamps or other brackets.
It uses standard UTV blower hoses sold by PCI/Rugged/etc or you can use 1.25"/32mm vacuum cleaner hose (ensure it's flexible and has soft rubber/silicone ends instead of rigid plastic).
The recommended fan is an ARCTIC S8038-10K server fan. You will need to cut off the mounting ears on one side to allow access to the lower screw holes. You can use a PWM fan controller if variable speed is desired. Wire hole should be sealed up with hot glue/RTV for air-tightness and cable strain relief.
The air filter should have a 3"/76mm connector. A washable, non-oiled filter is ideal.
I have a 4-port version here: https://www.printables.com/model/1247452-4-port-utv-helmet-air-pumper