How fast can 3D Printed Gears Spin ? - Testing my Setup

Can a 3D printed gear reach 250,000 rpm, I want to see destruction, exploding gears and the best performance in terms of material type, gear profile and lubricating medium. This test was to make sure my gears fit properly underneath the cover, they don't and need some tweaks.

I will soon start uploading the performance data of each gear along with download links for each of the gears so you can 3D print them yourselves.

[kyleprice]

Good work, I’m excited to see more tests. I would also like to see more about your printing methods and material. Also STL files of your gears as you go would be sweet!

[stevesclocks]

A trap to collect the broken teeth would probably help. Otherwise, a single chip will eventually run through the gears and break another tooth. Then you have two chips and the destruction accelerates.

[isaacpreven]

epic. i wonder if wider gaps between gear ratios would decrease total number of gears and thus make for less to go wrong per gear. also i wonder if a larger final gear's teeth would survive higher rpm. i wonder if you could get similar results with a smaller, higher rpm motor from a jetboard or something. idk how much power you need for 150, 000rpm + just food for thought. very impressive workflow/website. maybe go from thinner to thicker gears as their rpm increases? to decrease total rotating mass while maintaining strength as they go up in speed. i think if you thickened the last couple gears by ~25% you'd be in business.

[Ferox_Six]

It's not surprising that they can be spin that fast... It's for how long they can spin that fast I feel is the more important question.

[adminadminov]

Please measure the pressure of the turbine from the vacuum cleaner.
to increase the pressure, you can turn on several in series! and it works!

[daveofyorkshire]

This just proves the ONLY problem with plastic gears is heat generation/friction... Its a shame there is no temperature probe in the fluid to determine if it sustains a fixed temperature or eventually gets to plastic melting point... The biggest problem is the small first gear - or small gears in general, it has the most force over the smallest surface area and often fails first...

The teeth broke with rapid changes of speed. The motor is a powerful one...

[dziczekt]

interesting test but I think that after each gear crash - you should to remove rubbish and then continue test

[ВалентинХильчук]

OMG! Work with sound is terrible! Why did you do that?