A cycloidal gear drive CAN be back driven. Yours was just not smooth enough to allow for the motion.

@GregorShapiro

11 ай бұрын

If the tolerances are fine enough and the surfaces of the right shape and surface fineness a cycloidal drive can be back driven. The (usually) high reduction of cycloidal gearsets makes for a high loss of torque and thus difficulty in back driving them. The fact that all *teeth* are in rolling contact with their counterparts means that a MUCH larger torque can be transmitted and the risk of shearing off a tooth on a pinion or bull gear disappears.

@kindaovermyhead

10 ай бұрын

He also was not going to get enough torque by hand with that small shaft

@isaacnichols12

3 ай бұрын

Great content

Awesome video! Excited to see it connected to a drill 🙌

Have you shared these files anywhere? I would love to print one myself!

Good video. You should combine this print with the World's biggest gear ratio... video and tweak it and see if you can spin it and how many gears it will work with

A oil control gear for a mustang looks very similar minus the strap on top etc… Coyooooooooooote baby!!

Thanks

Using this with steel encased with oil at higher RPM: Handheld? Vibration monster with some heavy waddle with the rpm ramp-up. Fixed machine - Very nice aside from that it's a Friction monster regarding sliding-friction (where it sort of slides at the apexes pointing inward from the orange gear), if it's smooth it will work nice, but the sliding-friction will create a lot of heat. Dirt & Grime: since the apexes of the blue gear seems to "press" into the wells of the orange gear, dirt and grime could cause incremental damage which would seize the system very shortly after first detection of any irregularity. Using pristine and pure material and-of utmost exquisite part-precision and lubrication you can have a very small high torque gearbox that WILL in fact last a very long time. Yet still, after the first detection of any irregularity, you will have a failing system in no time. It's very delicate, but still if you want very nice things you need to be prepared to lose them easily. This also seems ridiculously easy to replace, lots of replacements won't be a hassle in most machines and devices, the cost for this even with the best of everything you can get will still cost significantly less if you desire keeping spares and have the will to replace them when needed so.

Hello, did you share the cad files of the cycloid reducer in the video anywhere?

I wonder if a cycloidal engine would be possible? think like a rotary but using the action of the cycloidal interface as the engine rotor.

Is there a way to have your files to 3d print the drive? or can I buy one from you?. Thank you Antonio Domit

I think this is very cool, however, there a very many drawbacks to cycloidal gearboxes with the biggest being manufacturing as well as vibrations. Do to all the rubbing that occurs they easily generate rough vibrations which is unacceptable in profession machinery. When it comes to manufacturing the process to mass produce gearboxes. A standard gear is very easy to manufacture, however a cycloidal gear requires a milling machine. This is okay for special cases but their is a reason why you rarely see cycloidal gear drives mass produced. (Also cycloidal gearboxes can be back driven)

@conorstewart2214

10 ай бұрын

I think you mean precision machinery, not professional machinery. Standard spur gears often require milling to create them as well, especially if they need to be precise.

Strain wave next

Cycloidal drives CAN be back-driven, as long as you don't weld the output shaft in place.

I have a doubt, on my project i was using planetary gears to make a reduction of 64:1, but the high RPM and friction kept destroying the teeth. Would a cycloidal gearbox be a good option? Nice video btw

@3DPrinterAcademy

10 ай бұрын

potentially. the load is distributed

@rollin3480

10 ай бұрын

Lubricant it 🤣

How do 3D printed Cycloidal gearboxes hold up to wear versus planetary? I want to start getting into designs involving motors and rotation, but I want to stick to one dominant gearbox strategy to start, I I prioritize ease of printing and reliability.

@conorstewart2214

10 ай бұрын

What ever you go for using some form of lubrication is always a good idea. I started with jus a compound spur gear, gear train and it worked well enough, especially with nylon and lithium grease. Then I tried a planetary gearbox and it worked well too, albeit being more difficult to assemble (part of that was just my design). I haven’t tried cycloidal yet, but I plan on doing it. You should just experiment and try a few, just small scale ones with small motors and see which ones work best for you, with all the gear generators you can get now it really isn’t that difficult to design them. You should also experiment with different gear profiles like helical or herringbone. Also when printing gears do it on rafts, any elephants foot could cause the gears to mesh incorrectly and may lead to excess friction or the gearbox just not working. I prefer printing gears with a 0.25 mm nozzle but 0.4 mm does work too, you just won’t be able to make gears quite as small.

@SilentShiba

10 ай бұрын

@@conorstewart2214 Excellent advice, thanks for typing that out for me

I think why people rather use planetary gears is because they don't create an unbalance.

Very simular to how an oil pump works in a vehicle.

@AlexDaDermahurr

11 ай бұрын

Its also close In function to a rotary engine

@GregorShapiro

11 ай бұрын

Not at all. This is rotational speed reduction. Not fluid pumping. (though the internals do have some visual similarities).

Any fusion downloadable files so kids can play with it?

Looks like the inside to a ls engine oil pump

tanks, i send my LIKE!!!, maybe can share the stl?, thanks

It would be cool to see a backdriveable/reversible cycloidal gearbox. And am I crazy or does this look like it could be turned into an electric motor?

@peternickerson2911

11 ай бұрын

your crazy. This is a gear box, not an alternator or generator.

@MyHandleIsGood

11 ай бұрын

Could be attached to a motor in a fairly compact package, especially for the reduction. However, this is not, and never will be, a motor.

@GregorShapiro

11 ай бұрын

A well made cycloidal gear IS back drivable. kzread.info/dash/bejne/oqJrutyJlqa6qKQ.html

@king_james_official

10 ай бұрын

wdym turned into a motor lol

friction between blue gear & white shaft??

@conorstewart2214

10 ай бұрын

There will be some. If the tolerance isn’t too tight then it won’t be an issue. Often people put a bearing in there and between the yellow piece and blue piece to help reduce friction. When you make any gearbox to actually use you should lubricate it and with 3D printing the gearbox will probably need to be “broken in”, just run it until it gets smoother.

Wondering whether the German engineer Herr Doktor Felix Wankel drew upon that principle to design his now legendary rotary internal combustion engine cannot be helped.

@DoIGetTube

10 ай бұрын

Nippon's Mazda Motors had employed the said engine in its RX series of motor cars for decades, and as of this response's time stamp date, it most likely still did.

>it can't be back driven Nah, it's just the 1:8 ratio, pal. Add a handle, lube the thing up and try just a bit harder.

G R E A S E

Seems like a ton of friction though 🤔

@designsforge4153

3 ай бұрын

Isn't that where the torque comes from?

Gears

@jackb3822

11 ай бұрын

Yes

@markbailey5393

10 ай бұрын

Yes

Если он сделал ручку чтобы вращать, зачем вращал рукой? Бесит.

To those who can’t afford Fusion 360

@lawrencedoliveiro9104

10 ай бұрын

(and it is pretty pricey):

@lawrencedoliveiro9104

10 ай бұрын

look at Fr

@lawrencedoliveiro9104

10 ай бұрын

eeCAD.

SO much friction in this design

Bean

@leancrafter

11 ай бұрын

Bean

@peternickerson2911

11 ай бұрын

Bean

The fact that thing is over complicated and frail, when one could achieve the same result with a much more simple geneva mechanism....

I love your contents, can I get a comment heart?

@soyunknown569

11 ай бұрын

No

@peternickerson2911

11 ай бұрын

I gave you a dislike instead

Hello, did you share the cad files of the cycloid reducer in the video anywhere?