It’s getting near the time of yr when we have to begin fastidiously vetting tasks right here at Hackaday. In any case, no one likes to get punked by an early April Idiot’s joke. However as foolish as this outsized PC fan appears to be like, it certain looks like a legit construct, if a bit on the pointless facet.
Then once more, maybe pointless is just too harsh a phrase to make use of. This 500-mm fan is by [Angus] over at Maker’s Muse, and it represents quite a lot of design work to make it buildable, in addition to workable and (principally) secure. Utilizing each CNC-cut MDF and printed elements, the fan is an embiggened duplicate of a normal-sized case fan. The fan’s body needed to be printed in 4 elements, which lock along with intelligent interlocking joints. Every of the 9 blades locks right into a central hub with sturdy-looking dovetails.
And durable is necessary, because the fan is powered by a 1,500 Watt brushless DC motor. With a 4:1 discount because of a printed gear prepare, the fan spins at round 3,300 RPM, which makes a terrifying noise. There’s a little bit little bit of “speed-wobble” evident, however [Angus] managed to outlive testing. The fan, nonetheless, didn’t — the 3D-printed gears self-destructed after a full-speed take a look at, however not earlier than the fan did its greatest wind tunnel imitation. And the RGB LEDs regarded nice.
This one reminds up of one thing we’d see [Ivan Miranda] provide you with. In actual fact, his super-sized 3D printer might need been simply the factor to shorten [Angus]’ print occasions.