3D Printed Brushless Harmonic Drive

Been thinking about making a small brushless robot dog, but I don't have enough money for more expensive motors. So, I found the cheapest BE 1806 brushless motor I could find and wanted to see how much torque I get out of it.

If you're using bldc motors I would go for used hoverboard. Can get them very cheap and they're torque.

[@Dangineering]

I was experimenting with very low torque and (low cost) BLDC drone motors because I wanted to see how feasible it was to make a quadruped using motors on this scale without having to use hoverboard motors that have tons of torque but are very heavy.

@@Dangineering fair enough, I even surprised the rest of my family by just handing them hoverboard motors... they are very dense for sure!

[@MrNoipe]

@ are you giving them drone motors for christmas?

[@yonggor]

I guess if you use nylon for the flex ring it will last longer

[@DEtchells]

Have you done any wear tests on these gears? I’m interested how well 3D printed harmonic drives hold up over time, but I haven’t seen any vids of that kind of testing on them so far.

[@Dangineering]

Funny you mention that. I actually have a much revised design for a Harmonic drive that I am working on now. Once I have it finished I will be testing wear characteristics, torque, noise, torque/weight ratio, etc of all my custom designed actuators for my robot dog. That will likely give you some of the answers you seek. However, if you haven't seen him yet, this guy has some interesting videos on 3D printed harmonic drives: kzbin.info/www/bejne/e57ZoGaYgblgkJY

[@DEtchells]

@@Dangineering Ah, I hadn’t seen that one yet, thanks!

[@MrNoipe]

@@Dangineering +1 interested in seeing more in depth videos on the design and durability of 3d printed gear drives!

[@abdallahmagde5997]

I need 3D printed harmonic drives??