201–210 of 230 posts
Earlier quoted context omitted.
Which material are you using the print the gears?
PETG. Specifically it would either be Hatchbox PETG or PushPlastic PETG.
Also have some ideas that includes some motorised parts with gears. Do you think PLA is a bad choice for this?
Slightly off topic but it has long bothered me that racing simulations let you pick arbitrary gear ratios in the tranissions and differentials. Real life has two restrictions, you can't have half teeth, and you can't have huge teeth count. A 3.00 ratio sure, 12:36 but a 3.01? No car differential can fit a 100:301 ratio gearset and 10:30.1 just won't turn past the broken tooth.
I'm not a car guy, and I don't know about the differentials, but don't continuously variable transmissions allow for this? I'm guessing they're not in common use on race cars, but in principle, shouldn't they allow for a 3.01 ratio?
Most race cars use mechanical transmissions with automatic controls as that's the most robust design. Some stunt vehicles use automatics or CVT as landing with the wheels at different speeds than the vehicle causes a massive shock through the drivetrain. In a manual that shock goes right to the engine, in automatics there is usually some amount of absorption of rotational shocks due to the less rigid coupling.
Diffs are almost always a ring and pinion gear.
If someone ever makes the creation process for this type of visualization accessible to the average university professor, it could blow the lid of the digital textbook market. Most digital textbooks I've seen are basically just putting the text and images on a web page, and maybe integrating multiple choice quizzes. That's seriously under-utilizing the medium. They need to be interactive , and encourage the student t…
This is an absolutely phenomenal 'explorable explanation'. It methodically layers concepts to foster understanding, deploys interactivity to build intuition, and on top of all that provides crisp, clear narrative on top of all of the amazing visualizations.
Drives me crazy that if I suggest diagrams like this might be useful on wikipedia or documentation I mostly get downvoted into oblivion.
I really like this presentation! It’s wonderful. I don’t mean to hijack but I thought this would be an appropriate place to share a photo album of the 3D printed planetary gears in my open source robot: https://imgur.com/gallery/GqXD2Zj I’ve been 3D printing gears for some years now and I want to spread the word that 3D printed gears actually work really well! The gears in the image album above have been operating on…
A few friends were experimenting with 3D-printed gears for their robots, I've advised to switch to helical gears as these should make less noise, and less prone to wear (since the load never happens on a single teeth, but is transfered progressively). Of course, that creates axial load, which might or might not be an issue (and countered with a second cog), and complexify assembly, especially for planetary gears. But if you try (or already have) them out, let me know.
On our part, the test have proved successful, but we're not looking at tens of kilometers, and mostly print PLA.
To clarify why they aren't used more, their production process is traditionally more complex, but that doesn't happen with additive manufacturing. I'd also guess that the teeth shape makes them more robust than conventional filling, and more evenly distributes force on the layer joints.
Nah... Nah I would say you pretty much nailed it in this blog post! Incredible. HN Gold right here.
The answer is then they can implement a wide range of mathematical functions like reciprocal, tangent, square etc. and you will get a kick out watching an hour long video about a mechanical "computer" with cams building up differential calculations: https://www.youtube.com/watch?v=s1i-dnAH9Y4
Enjoy!
For the author: adding support for touch events, or using normal HTML sliders would be helpful.
Curious: does something not work for you? If so, what platform are you using? Asking because it works perfectly for me on mobile...
Cheers on the cool demos, I think it could be the start of a great resource for elementary school teachers introducing machines. I know this sort of thing would have been great when I was in grade 3.