We're not "brave" for staying to the end. It was awesome knowledge and I learned a ton! If I may offer some constructive criticism: I know post production of video is super hard, but maybe rethink how you add the extra information on screen? Putting it over your face was quite distracting at times and made it tougher (for me at least) to follow. Please keep doing these videos! They're fantastic!
Thank you! And thanks for the feedback. I was sortof stuck with the framing for every shot so I didn't realize til afterwards how much area the text would take up, but I will keep in mind I may need a wider shot with space open off to one side in the future. One of the dumbest things with text in my video editor is that it doesn't automatically 'wrap' it will just always be on one line and I need to create a new line manually all the time. I'll see if there is a plug in that would make it possible to create a text box where I can just make sure it never gets beyond a certain width and text wraps automatically. Then I could just have a fixed width off to the side for text.
We're starting our gear unit in Engineering Design, and our teacher's been out so it's been a little difficult for us. This video definitely helped man, appreciate it!
Great video and coverage of all things gears. I have designed a spur gear for my 1/10 rc rock crawler and it has worked out good in PLA. I need to print the gear in PETG and nylon now.
PLA could be better for a Crawler - it's harder and stronger than PETG so will wear slower. Gears in combat robots get abused really bad so the extra toughness and heat resistance of PETG wins out.
I'd love to see coverage of linkages as they relate to robotics and combat robotics. I get that there aren't very many examples, but a thorough explanation of why that is could be interesting.
Hey so is there a reason people don’t use rollers or gears to transmit power to the weapon shaft. I feel like with how thin motors are you can just press the can up against a rubber wheel attached to the bots spinner like how a pulley is and it would work just fine? No one uses gears for weapons either. I just find it strange.
I literally showed two examples of using gears to transmit power to a weapon in this video. Bloodsport on BattleBots uses gears to transmit power to the weapon. Son of Whiachi as well. Several other bots do it too. It is a lot less common than belts however. The main reason for this is that gears do not slip on impact so you need to either use some kind of clutch at larger scale or modify your motors to survive all of that shock load (which isn't usually needed at the smaller scale like 3lb and below). The other reason it's less common is that the weapon motor has to be positioned a lot closer to the weapon that way so its a bit inconvenient for some designs. As for rollers, some ring spinners and shell spinners do that but wear on the roller is a big concern. If the rubber material wears away and loses contact you're screwed. So it has to be hinged and sprung against whatever it's spinning to prevent losing contact which adds more moving parts and another point of failure.
@Team Just 'Cuz Robotics, thanks for answering. Sorry for not watching the vid. I watched two min and thought it was just about drive and decided it was 11 at night and I wanted sleep.
Larger gears are commonly keyed to the shaft. Manny robot gears are likely too small to make that practical. Have you even tried printing a gear with a non round bore to get a similar effect to keying?
Yes, keying is common in much larger scale applications though usually a set screw is still used to prevent the gear sliding axially on the shaft and sometimes a second one directly holding the key in place. I have printed wheel hubs with a D shaft profile before and that worked for a 6mm shaft, and similarly had success with hexagon shaped shafts and printed bores. You just need to be careful about getting enough engagement to compensate for how much the plastic can deform and stretch. Not all sizes of hex shafts work.
@@JustCuzRoboticsin the TV show Rick and Morty, there is a Rocky race of people/aliens who seem to be translucent plastic cases with a dozen or so gears inside. An event in their history that is only passively alluded to is the Gear Wars, the subject seems to have about as much depth as World War I.
I've just been using drill motors and pulleys in my featherweights, I've just ordered some POM filament to experiment with 3d printed gears. It's really low friction. Do you grease your printed gears at all?
I tried using grease at first but honestly it'll never stay there with exposed gears. Pom is insanely hard to print from everything that I have heard but good luck!
Curious the torque the 2205s output with the pinion gearing system you use. Is it a feasible solution for a thwackbot that needs fast and powerful 180 degree swings?
Honestly I'm not entirely sure. Would probably be better to have a higher gear ratio for changing directions super fast but then again it certainly worked fine for driving division so it's possible that would work fine for that too
![Putting My Products into Battle! SSP Design Overview [Beetleweight Combat Robot]](/img/1.gif)
We're not "brave" for staying to the end. It was awesome knowledge and I learned a ton!
If I may offer some constructive criticism: I know post production of video is super hard, but maybe rethink how you add the extra information on screen? Putting it over your face was quite distracting at times and made it tougher (for me at least) to follow.
Please keep doing these videos! They're fantastic!
Thank you!
And thanks for the feedback. I was sortof stuck with the framing for every shot so I didn't realize til afterwards how much area the text would take up, but I will keep in mind I may need a wider shot with space open off to one side in the future.
One of the dumbest things with text in my video editor is that it doesn't automatically 'wrap' it will just always be on one line and I need to create a new line manually all the time. I'll see if there is a plug in that would make it possible to create a text box where I can just make sure it never gets beyond a certain width and text wraps automatically. Then I could just have a fixed width off to the side for text.
You guys are putting out amazing content, really appreciate the work that goes into this 🙌🙌
Thank you! It's just me (Seth) right now but maybe someday I won't have to do all the work myself...
We're starting our gear unit in Engineering Design, and our teacher's been out so it's been a little difficult for us. This video definitely helped man, appreciate it!
Never thought of my videos as school level educational but that's really cool to hear. Thanks!
Great video and coverage of all things gears. I have designed a spur gear for my 1/10 rc rock crawler and it has worked out good in PLA. I need to print the gear in PETG and nylon now.
Sounds like a fun project!
PLA could be better for a Crawler - it's harder and stronger than PETG so will wear slower.
Gears in combat robots get abused really bad so the extra toughness and heat resistance of PETG wins out.
@@andrecook4268 Thanks. I got a lot of use out of the gear before I stripped it under load.
Very insightful
I'd love to see coverage of linkages as they relate to robotics and combat robotics. I get that there aren't very many examples, but a thorough explanation of why that is could be interesting.
Cool this is like a more in-depth version of what I learnt in school.
I'm all geared up for this 😆😆😆😆
Sorry I had to....
Very useful thank you !
You are very welcome!
Would definitely like to see a video on planetary gearboxes
Hey so is there a reason people don’t use rollers or gears to transmit power to the weapon shaft. I feel like with how thin motors are you can just press the can up against a rubber wheel attached to the bots spinner like how a pulley is and it would work just fine? No one uses gears for weapons either. I just find it strange.
I literally showed two examples of using gears to transmit power to a weapon in this video. Bloodsport on BattleBots uses gears to transmit power to the weapon. Son of Whiachi as well. Several other bots do it too. It is a lot less common than belts however. The main reason for this is that gears do not slip on impact so you need to either use some kind of clutch at larger scale or modify your motors to survive all of that shock load (which isn't usually needed at the smaller scale like 3lb and below).
The other reason it's less common is that the weapon motor has to be positioned a lot closer to the weapon that way so its a bit inconvenient for some designs.
As for rollers, some ring spinners and shell spinners do that but wear on the roller is a big concern. If the rubber material wears away and loses contact you're screwed. So it has to be hinged and sprung against whatever it's spinning to prevent losing contact which adds more moving parts and another point of failure.
@Team Just 'Cuz Robotics, thanks for answering. Sorry for not watching the vid. I watched two min and thought it was just about drive and decided it was 11 at night and I wanted sleep.
Larger gears are commonly keyed to the shaft. Manny robot gears are likely too small to make that practical.
Have you even tried printing a gear with a non round bore to get a similar effect to keying?
Yes, keying is common in much larger scale applications though usually a set screw is still used to prevent the gear sliding axially on the shaft and sometimes a second one directly holding the key in place.
I have printed wheel hubs with a D shaft profile before and that worked for a 6mm shaft, and similarly had success with hexagon shaped shafts and printed bores. You just need to be careful about getting enough engagement to compensate for how much the plastic can deform and stretch. Not all sizes of hex shafts work.
we are not ready to hear about the gear wars
You mean... Gears of War?
@@JustCuzRoboticsin the TV show Rick and Morty, there is a Rocky race of people/aliens who seem to be translucent plastic cases with a dozen or so gears inside. An event in their history that is only passively alluded to is the Gear Wars, the subject seems to have about as much depth as World War I.
I've just been using drill motors and pulleys in my featherweights, I've just ordered some POM filament to experiment with 3d printed gears. It's really low friction.
Do you grease your printed gears at all?
I tried using grease at first but honestly it'll never stay there with exposed gears. Pom is insanely hard to print from everything that I have heard but good luck!
Curious the torque the 2205s output with the pinion gearing system you use. Is it a feasible solution for a thwackbot that needs fast and powerful 180 degree swings?
Honestly I'm not entirely sure. Would probably be better to have a higher gear ratio for changing directions super fast but then again it certainly worked fine for driving division so it's possible that would work fine for that too
Are crown gears useful in combat robotics?
I haven't seen anyone use them but that doesn't mean they cannot be used
@@JustCuzRobotics nothing for it then, I’ll just have to give it a try.
Hex bolt in the gear... THANK YOU! but I feel dumb now
You're welcome I think?